[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | uslice.c -- update score display slice
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| 4 | Version 32 -- 1988-09-28 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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| 8 | #undef DEBUGGER
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| 9 |
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| 10 | #define DEBUGIT 0
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| 11 |
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[b28a12e] | 12 | #include "ram.h"
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[f40a309] | 13 |
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| 14 | #define BARCOLOR 0x3333
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| 15 |
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| 16 | /* initialized data */
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| 17 |
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[7258c6a] | 18 | int16_t lintab1[] = { /* note top line table */
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[f40a309] | 19 |
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| 20 | 205, 205, 201, 197, 197, 193, 193, 189, 185, 185, 181, 181,
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[9519422] | 21 | 177, 177, 173, 169, 169, 165, 165, 161, 157, 157, 153, 153,
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[f40a309] | 22 | 149, 149, 145, 141, 141, 137, 137, 133, 129, 129, 125, 125,
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| 23 | 121, 121, 117, 113, 113, 109, 109, 105, 101, 101, 97, 97,
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| 24 | 93, 93, 89, 85, 85, 81, 81, 77, 73, 73, 69, 69,
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| 25 | 65, 65, 61, 57, 57, 53, 53, 49, 45, 45, 41, 41,
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| 26 | 37, 37, 33, 29, 29, 25, 25, 21, 17, 17, 13, 13,
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| 27 | 9, 9, 5, 1
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| 28 | };
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| 29 |
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[7258c6a] | 30 | int16_t lintab2[] = { /* note top line table - N_FLAT */
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[f40a309] | 31 |
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[9519422] | 32 | 205, 201, 201, 197, 193, 193, 189, 189, 185, 181, 181, 177,
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| 33 | 177, 173, 173, 169, 165, 165, 161, 161, 157, 153, 153, 149,
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| 34 | 149, 145, 145, 141, 137, 137, 133, 133, 129, 125, 125, 121,
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| 35 | 121, 117, 117, 113, 109, 109, 105, 105, 101, 97, 97, 93,
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| 36 | 93, 89, 89, 85, 81, 81, 77, 77, 73, 69, 69, 65,
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| 37 | 65, 61, 61, 57, 53, 53, 49, 49, 45, 41, 41, 37,
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| 38 | 37, 33, 33, 29, 25, 25, 21, 21, 17, 13, 13, 9,
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[f40a309] | 39 | 9, 5, 5, 1
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| 40 | };
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| 41 |
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[7258c6a] | 42 | int16_t nttab1[] = { /* forward code transition table */
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[f40a309] | 43 |
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| 44 | 0, /* 0 */
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| 45 | 2, /* 1 */
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| 46 | 3, /* 2 */
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| 47 | 3, /* 3 */
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| 48 | 5, /* 4 */
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| 49 | 3, /* 5 */
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| 50 | 0 /* 6 */
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| 51 | };
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| 52 |
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[7258c6a] | 53 | int16_t nttab2[] = { /* backward code transition table */
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[f40a309] | 54 |
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| 55 | 0, /* 0 */
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| 56 | 0, /* 1 */
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| 57 | 1, /* 2 */
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| 58 | 3, /* 3 */
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| 59 | 0, /* 4 */
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| 60 | 4, /* 5 */
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| 61 | 0 /* 6 */
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| 62 | };
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| 63 |
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| 64 | /* |
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| 65 |
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| 66 | */
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[c3aee8a] | 67 |
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[f40a309] | 68 | uint16_t pxtbl[][4] = { /* pixel mask table for notes */
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| 69 |
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| 70 | { 0x0000, 0x0000, 0x0000, 0 }, /* 0 */
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| 71 | { 0x0000, 0x0000, 0xFFFF, 0 }, /* 1 */
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| 72 | { 0x0000, 0xFFFF, 0xFFFF, 0 }, /* 2 */
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| 73 | { 0xFFFF, 0xFFFF, 0xFFFF, 0 }, /* 3 */
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| 74 | { 0xFFFF, 0x0000, 0x0000, 0 }, /* 4 */
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| 75 | { 0xFFFF, 0xFFFF, 0x0000, 0 }, /* 5 */
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| 76 | { 0xFFFF, 0xFFFF, 0xFFFF, 0 } /* 6 */
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| 77 | };
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[c3aee8a] | 78 |
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[f40a309] | 79 | uint16_t epxtbl[][16] = { /* pixel mask table for events */
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| 80 |
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| 81 | { 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF, /* 0 */
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| 82 | 0xFFFF, 0x0000, 0x0000, 0x0000,
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| 83 | 0x0000, 0x0000, 0x0000, 0x0000,
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| 84 | 0, 0, 0, 0 },
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| 85 |
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| 86 | { 0x0000, 0x0000, 0x0000, 0x0000, /* 1 */
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| 87 | 0x0000, 0xFFFF, 0xFFFF, 0x0000,
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| 88 | 0x0000, 0x0000, 0x0000, 0x0000,
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| 89 | 0, 0, 0, 0 },
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| 90 |
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| 91 | { 0x0000, 0x0000, 0x0000, 0x0000, /* 2 */
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| 92 | 0x0000, 0x0000, 0x0000, 0xFFFF,
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| 93 | 0xFFFF, 0xFFFF, 0xFFFF, 0xFFFF,
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| 94 | 0, 0, 0, 0 },
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| 95 |
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| 96 | { 0xFFFF, 0xFFFF, 0xFFFF, 0x0000, /* 3 */
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| 97 | 0x0000, 0x0000, 0x0000, 0x0000,
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| 98 | 0x0000, 0x0000, 0x0000, 0x0000,
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| 99 | 0, 0, 0, 0 },
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| 100 |
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| 101 | { 0x0000, 0x0000, 0x0000, 0xFFFF, /* 4 */
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| 102 | 0xFFFF, 0xFFFF, 0x0000, 0x0000,
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| 103 | 0x0000, 0x0000, 0x0000, 0x0000,
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| 104 | 0, 0, 0, 0 },
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| 105 |
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| 106 | { 0x0000, 0x0000, 0x0000, 0x0000, /* 5 */
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| 107 | 0x0000, 0x0000, 0xFFFF, 0xFFFF,
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| 108 | 0xFFFF, 0x0000, 0x0000, 0x0000,
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| 109 | 0, 0, 0, 0 },
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| 110 |
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| 111 | { 0x0000, 0x0000, 0x0000, 0x0000, /* 6 */
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| 112 | 0x0000, 0x0000, 0x0000, 0x0000,
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| 113 | 0x0000, 0xFFFF, 0xFFFF, 0xFFFF,
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| 114 | 0, 0, 0, 0 }
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| 115 | };
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| 116 |
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| 117 | /* |
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| 118 |
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| 119 | */
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| 120 |
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| 121 | /*
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| 122 | =============================================================================
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| 123 | uslice(slice, mask1, mask2, gdstb)
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| 124 |
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| 125 | Updates 'slice[]' using 'mask1' and 'mask2' for the pixel mask
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| 126 | and the slice mask, respectively, and 'gdstb[]' for the group table.
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| 127 |
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| 128 | Note transitions are based on the value of global variable 'sd',
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| 129 | which is zero for forward, and non-zero for backward scrolling.
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| 130 |
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| 131 | Returns count of active groups and event priority levels.
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| 132 |
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| 133 | Note colors come from 'gtctab[]'.
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| 134 |
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| 135 | This code must be very fast or the display bogs down the system.
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| 136 | =============================================================================
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[7258c6a] | 137 | */
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[f40a309] | 138 |
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[7258c6a] | 139 | int16_t uslice(uint16_t *slice, uint16_t mask1, uint16_t mask2, struct gdsel *gdstb[])
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[f40a309] | 140 | {
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[7258c6a] | 141 | register uint16_t *pxptr, *slptr;
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| 142 | register struct gdsel *gdsep;
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[f40a309] | 143 | register uint16_t i, ncolor, w;
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[7258c6a] | 144 | uint16_t *ncptr, *nctabp;
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| 145 | struct gdsel **gdstp, *gdprv, *gdnxt;
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[f40a309] | 146 | int16_t wrote;
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| 147 | int16_t *lintab;
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| 148 |
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| 149 | DB_ENTR("uslice()");
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| 150 |
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| 151 | /* initialize note color, note control, and group control pointers */
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| 152 |
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| 153 | gdstp = gdstb; /* group control table */
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| 154 | nctabp = sd ? nttab2 : nttab1; /* note transition table */
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| 155 | ncptr = gtctab; /* group to color table */
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| 156 | wrote = 0; /* reset count of active groups */
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| 157 |
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| 158 | lintab = (ac_code EQ N_SHARP) ? lintab1 : lintab2; /* line table */
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| 159 |
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| 160 | if (gdstb[NGDSEL - 1]) { /* check for a bar marker */
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| 161 |
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| 162 | slptr = slice; /* point at the slice */
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| 163 | ncolor = mask1 & BARCOLOR; /* setup bar write variable */
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| 164 |
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| 165 | for (i = 211; i--; ) /* draw the bar */
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| 166 | *slptr++ = (*slptr & mask2) | ncolor;
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| 167 |
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| 168 | gdstb[NGDSEL - 1] = (struct gdsel *)NULL; /* clear flag */
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| 169 | }
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| 170 |
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| 171 | /* |
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| 172 |
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| 173 | */
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| 174 |
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| 175 | for (i = 0; i < 12; i++) { /* scan the group control table ... */
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| 176 |
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| 177 | ncolor = mask1 & *ncptr++; /* get note color mask */
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| 178 | gdprv = (struct gdsel *)gdstp; /* setup previous pointer */
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| 179 | gdsep = *gdstp++; /* setup current pointer */
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| 180 |
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| 181 | if (gdsep) { /* ... process each active group ... */
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| 182 |
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| 183 | ++wrote; /* indicate slice was updated */
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| 184 |
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| 185 | do { /* ... for each note played by the group ... */
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| 186 |
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| 187 | /* setup slice and pixel pointers */
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| 188 |
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| 189 | slptr = slice + lintab[gdsep->note];
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| 190 | pxptr = &pxtbl[gdsep->code][0];
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| 191 |
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| 192 | /* update the slice */
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| 193 |
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| 194 | *slptr++ = (*slptr & mask2) | (*pxptr++ & ncolor);
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| 195 | *slptr++ = (*slptr & mask2) | (*pxptr++ & ncolor);
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| 196 | *slptr = (*slptr & mask2) | (*pxptr++ & ncolor);
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| 197 |
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| 198 | gdnxt = gdsep->next; /* set next pointer */
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| 199 |
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| 200 | /* update and check update note status code */
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| 201 |
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| 202 | if (0 EQ (gdsep->code = nctabp[gdsep->code])) {
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| 203 |
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| 204 | /* if it's zero, delete the element */
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| 205 |
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| 206 | gdprv->next = gdnxt;
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| 207 | gdsep->next = gdfsep;
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| 208 | gdfsep = gdsep;
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| 209 |
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| 210 | } else
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| 211 | gdprv = gdsep;
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| 212 |
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| 213 | gdsep = gdnxt; /* set pointer for next pass */
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| 214 |
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| 215 | } while (gdsep);
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| 216 | }
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| 217 | }
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| 218 |
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| 219 | /* |
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| 220 |
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| 221 | */
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| 222 | for (; i < (NGDSEL - 1); i++) {
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| 223 |
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| 224 | gdprv = (struct gdsel *)gdstp; /* setup previous pointer */
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| 225 | gdsep = *gdstp++; /* setup current pointer */
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| 226 |
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| 227 | if (gdsep) { /* ... process each active event priority ... */
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| 228 |
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| 229 | ++wrote; /* indicate slice was updated */
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| 230 |
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| 231 | do { /* ... for each event of this priority ... */
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| 232 |
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| 233 | /* setup slice and pixel pointers */
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| 234 |
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| 235 | slptr = slice + 212;
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| 236 | pxptr = &epxtbl[gdsep->code][0];
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| 237 |
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| 238 | /* get event color */
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| 239 |
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| 240 | ncolor = mask1 & gdsep->note;
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| 241 |
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| 242 | /* update the slice */
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| 243 |
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| 244 | if (w = *pxptr++) /* 212 */
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| 245 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 246 |
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| 247 | ++slptr;
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| 248 |
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| 249 | if (w = *pxptr++) /* 213 */
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| 250 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 251 |
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| 252 | ++slptr;
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| 253 |
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| 254 | if (w = *pxptr++) /* 214 */
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| 255 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 256 |
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| 257 | ++slptr;
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| 258 |
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| 259 | if (w = *pxptr++) /* 215 */
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| 260 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 261 |
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| 262 | ++slptr;
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| 263 |
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| 264 | if (w = *pxptr++) /* 216 */
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| 265 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 266 |
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| 267 | ++slptr;
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| 268 |
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| 269 | if (w = *pxptr++) /* 217 */
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| 270 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 271 |
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| 272 | ++slptr;
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| 273 |
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| 274 | if (w = *pxptr++) /* 218 */
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| 275 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 276 |
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| 277 | ++slptr;
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| 278 |
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| 279 | if (w = *pxptr++) /* 219 */
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| 280 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 281 |
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| 282 | ++slptr;
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| 283 |
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| 284 | if (w = *pxptr++) /* 220 */
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| 285 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 286 |
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| 287 | ++slptr;
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| 288 |
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| 289 | if (w = *pxptr++) /* 221 */
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| 290 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 291 |
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| 292 | ++slptr;
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| 293 |
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| 294 | if (w = *pxptr++) /* 222 */
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| 295 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 296 |
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| 297 | ++slptr;
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| 298 |
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| 299 | if (w = *pxptr) /* 223 */
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| 300 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 301 |
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| 302 | gdnxt = gdsep->next; /* set next pointer */
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| 303 | gdprv->next = gdnxt; /* delete the element */
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| 304 | gdsep->next = gdfsep;
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| 305 | gdfsep = gdsep;
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| 306 | gdsep = gdnxt; /* set pointer for next pass */
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| 307 |
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| 308 | } while (gdsep);
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| 309 | }
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| 310 | }
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| 311 |
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| 312 | DB_EXIT(wrote ? "uslice - slice written" : "uslice - no write");
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| 313 |
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| 314 | return(wrote);
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| 315 | }
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| 316 |
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| 317 | /* |
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| 318 |
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| 319 | */
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| 320 |
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| 321 | /*
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| 322 | =============================================================================
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| 323 | rslice(gdstb)
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| 324 |
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[0580615] | 325 | Reverses the slice codes in 'gdstb' based the value of sd,
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[f40a309] | 326 | which is zero for forward, and non-zero for backward scrolling.
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| 327 | =============================================================================
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| 328 | */
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[7258c6a] | 329 |
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| 330 | void rslice(struct gdsel *gdstb[])
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[f40a309] | 331 | {
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| 332 | register struct gdsel *gdsep;
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| 333 | register struct gdsel **gdstp;
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| 334 | register uint16_t *nctabp;
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| 335 | register uint16_t i, nc;
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| 336 | struct gdsel *gdprv, *gdnxt;
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| 337 |
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| 338 | DB_ENTR("rslice");
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| 339 |
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| 340 | #if DEBUGIT
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| 341 | if (debugsw)
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| 342 | printf("\nrslice($%lX): sd = %s\n", gdstb, sd ? "BAK" : "FWD");
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| 343 | #endif
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| 344 |
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| 345 | /* initialize note control and group control pointers */
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| 346 |
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| 347 | nctabp = sd ? nttab2 : nttab1; /* note control table pointer */
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| 348 | gdstp = gdstb; /* group control table pointer */
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| 349 |
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| 350 | /* |
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| 351 |
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| 352 | */
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| 353 | /* reverse note codes */
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| 354 |
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| 355 | for (i = 0; i < 12; i++) { /* scan the group control table ... */
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| 356 |
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| 357 | gdprv = (struct gdsel *)gdstp; /* setup previous pointer */
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| 358 | gdsep = *gdstp++; /* setup current pointer */
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| 359 |
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| 360 | if (gdsep) { /* ... process each active group ... */
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| 361 |
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| 362 | do { /* ... for each note played by the group ... */
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| 363 |
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| 364 | gdnxt = gdsep->next; /* set next pointer */
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| 365 |
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| 366 | /* update and check update note status code */
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| 367 |
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| 368 | if (0 EQ (gdsep->code = nctabp[nc = gdsep->code])) {
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| 369 |
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| 370 | #if DEBUGIT
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| 371 | if (debugsw)
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| 372 | printf("rslice: note %d - %d -> %d\n",
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| 373 | gdsep->note, nc, gdsep->code);
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| 374 | #endif
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| 375 |
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| 376 | /* if it's zero, delete the element */
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| 377 |
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| 378 | gdprv->next = gdnxt;
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| 379 | gdsep->next = gdfsep;
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| 380 | gdfsep = gdsep;
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| 381 |
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| 382 | } else {
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| 383 |
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| 384 | #if DEBUGIT
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| 385 | if (debugsw)
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| 386 | printf("rslice: note %d - %d -> %d\n",
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| 387 | gdsep->note, nc, gdsep->code);
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| 388 | #endif
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| 389 |
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| 390 | gdprv = gdsep;
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| 391 | }
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| 392 |
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| 393 | gdsep = gdnxt; /* set pointer for next pass */
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| 394 |
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| 395 | } while (gdsep);
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| 396 | }
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| 397 | }
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| 398 |
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| 399 | /* |
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| 400 |
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| 401 | */
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| 402 | /* delete event codes */
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| 403 |
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| 404 | for (; i < NGDSEL - 1; i++) {
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| 405 |
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| 406 | gdprv = (struct gdsel *)gdstp; /* setup previous pointer */
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| 407 | gdsep = *gdstp++; /* setup current pointer */
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| 408 |
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| 409 | if (gdsep) { /* ... process each active event priority ... */
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| 410 |
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| 411 | do { /* ... for each event of this priority ... */
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| 412 |
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| 413 | gdnxt = gdsep->next; /* set next pointer */
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| 414 | gdprv->next = gdnxt; /* delete the element */
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| 415 | gdsep->next = gdfsep;
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| 416 | gdfsep = gdsep;
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| 417 | gdsep = gdnxt; /* set pointer for next pass */
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| 418 |
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| 419 | } while (gdsep);
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| 420 | }
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| 421 | }
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| 422 |
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| 423 | gdstb[NGDSEL - 1] = (struct gdsel *)NULL; /* clear bar flag */
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| 424 |
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| 425 | DB_EXIT("rslice");
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| 426 | }
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| 427 |
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| 428 | /* |
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| 429 |
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| 430 | */
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| 431 |
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| 432 | /*
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| 433 | =============================================================================
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| 434 | cslice(slice, mask1, mask2, gdstb)
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| 435 |
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| 436 | Updates 'slice[]' using 'mask1' and 'mask2' for the pixel mask
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| 437 | and the slice mask, respectively, using 'gdstb[]' as the group table.
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| 438 |
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| 439 | Differs from uslice() in that no note gdstb events are deleted.
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| 440 | Used for center slice updates.
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| 441 |
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| 442 | Note transitions are based on the value of global variable 'sd',
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| 443 | which is zero for forward, and non-zero for backward scrolling.
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| 444 |
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[7258c6a] | 445 | Returns count of active groups and event priority levels.
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[f40a309] | 446 |
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[7258c6a] | 447 | Note colors come from 'gtctab[]'.
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[f40a309] | 448 |
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[7258c6a] | 449 | This code has to be very fast.
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| 450 | =============================================================================
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[f40a309] | 451 | */
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[7258c6a] | 452 |
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| 453 | int16_t cslice(uint16_t *slice, uint16_t mask1, uint16_t mask2, struct gdsel *gdstb[])
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[f40a309] | 454 | {
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| 455 | register uint16_t *pxptr, *slptr;
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| 456 | register struct gdsel *gdsep;
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| 457 | register uint16_t i, ncolor, w;
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| 458 | uint16_t *ncptr, *nctabp;
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| 459 | struct gdsel **gdstp, *gdprv, *gdnxt;
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| 460 | int16_t wrote;
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| 461 | int16_t *lintab;
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| 462 |
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| 463 | DB_ENTR("cslice()");
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| 464 |
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| 465 | /* initialize note color, note control, and group control pointers */
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| 466 |
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| 467 | gdstp = gdstb; /* group control table */
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| 468 | nctabp = sd ? nttab2 : nttab1; /* note transition table */
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| 469 | ncptr = gtctab; /* group to color table */
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| 470 | wrote = 0; /* reset count of active groups */
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| 471 |
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| 472 | lintab = (ac_code EQ N_SHARP) ? lintab1 : lintab2; /* line table */
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| 473 |
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| 474 | if (gdstb[NGDSEL - 1]) { /* check for a bar marker */
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| 475 |
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| 476 | slptr = slice; /* point at the slice */
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| 477 | ncolor = mask1 & BARCOLOR; /* setup bar write variable */
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| 478 |
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| 479 | for (i = 211; i--; ) /* draw the bar */
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| 480 | *slptr++ = (*slptr & mask2) | ncolor;
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| 481 |
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| 482 | gdstb[NGDSEL - 1] = (struct gdsel *)NULL; /* clear flag */
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| 483 | }
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| 484 |
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| 485 | /* |
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| 486 |
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| 487 | */
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| 488 |
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| 489 | for (i = 0; i < 12; i++) { /* scan the group control table ... */
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| 490 |
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| 491 | ncolor = *ncptr++; /* get note color */
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| 492 | gdprv = (struct gdsel *)gdstp; /* setup previous pointer */
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| 493 | gdsep = *gdstp++; /* setup current pointer */
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| 494 |
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| 495 | if (gdsep) { /* ... process each active group ... */
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| 496 |
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| 497 | #ifdef DEBUGGER
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| 498 | sprintf(DBvar, "cslice - g=%d gdsep=$%lX", i, gdsep); DB_CMNT(DBvar);
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| 499 | #endif
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| 500 | ++wrote; /* indicate slice was updated */
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| 501 |
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| 502 | do { /* ... for each note played by the group ... */
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| 503 |
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| 504 | /* setup slice and pixel pointers */
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| 505 |
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| 506 | slptr = slice + lintab[gdsep->note];
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| 507 | pxptr = &pxtbl[gdsep->code][0];
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| 508 |
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| 509 | /* update the slice */
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| 510 |
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| 511 | *slptr++ = (*slptr & mask2) | (*pxptr++ & ncolor);
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| 512 | *slptr++ = (*slptr & mask2) | (*pxptr++ & ncolor);
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| 513 | *slptr = (*slptr & mask2) | (*pxptr++ & ncolor);
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| 514 |
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| 515 | gdnxt = gdsep->next; /* set nxt pointer */
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| 516 | gdprv = gdsep; /* set prv pointer */
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| 517 | gdsep = gdnxt; /* set pointer for next pass */
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| 518 |
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| 519 | } while (gdsep);
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| 520 | }
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| 521 | }
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| 522 |
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| 523 | /* |
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| 524 |
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| 525 | */
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| 526 | for (; i < (NGDSEL - 1); i++) { /* scan the event priorities ... */
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| 527 |
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| 528 | gdprv = (struct gdsel *)gdstp; /* setup previous pointer */
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| 529 | gdsep = *gdstp++; /* setup current pointer */
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| 530 |
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| 531 | if (gdsep) { /* ... process each active event priority ... */
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| 532 |
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| 533 | ++wrote; /* indicate slice was updated */
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| 534 |
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| 535 | do { /* ... for each event of this priority ... */
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| 536 |
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| 537 | /* setup slice and pixel pointers */
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| 538 |
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| 539 | slptr = slice + 212;
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| 540 | pxptr = &epxtbl[gdsep->code][0];
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| 541 |
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| 542 | ncolor = gdsep->note; /* get event color */
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| 543 |
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| 544 | /* update the slice */
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| 545 |
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| 546 | if (w = *pxptr++) /* 212 */
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| 547 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 548 |
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| 549 | ++slptr;
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| 550 |
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| 551 | if (w = *pxptr++) /* 213 */
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| 552 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 553 |
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| 554 | ++slptr;
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| 555 |
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| 556 | if (w = *pxptr++) /* 214 */
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| 557 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 558 |
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| 559 | ++slptr;
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| 560 |
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| 561 | if (w = *pxptr++) /* 215 */
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| 562 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 563 |
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| 564 | ++slptr;
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| 565 |
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| 566 | if (w = *pxptr++) /* 216 */
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| 567 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 568 |
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| 569 | ++slptr;
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| 570 |
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| 571 | if (w = *pxptr++) /* 217 */
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| 572 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 573 |
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| 574 | ++slptr;
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| 575 |
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| 576 | if (w = *pxptr++) /* 218 */
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| 577 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 578 |
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| 579 | ++slptr;
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| 580 |
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| 581 | if (w = *pxptr++) /* 219 */
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| 582 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 583 |
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| 584 | ++slptr;
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| 585 |
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| 586 | if (w = *pxptr++) /* 220 */
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| 587 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 588 |
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| 589 | ++slptr;
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| 590 |
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| 591 | if (w = *pxptr++) /* 221 */
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| 592 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 593 |
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| 594 | ++slptr;
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| 595 |
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| 596 | if (w = *pxptr++) /* 222 */
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| 597 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 598 |
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| 599 | ++slptr;
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| 600 |
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| 601 | if (w = *pxptr) /* 223 */
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| 602 | *slptr = (*slptr & mask2) | (w & ncolor);
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| 603 |
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| 604 | gdnxt = gdsep->next; /* set next pointer */
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| 605 | gdprv->next = gdnxt; /* delete the element */
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| 606 | gdsep->next = gdfsep;
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| 607 | gdfsep = gdsep;
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| 608 | gdsep = gdnxt; /* set pointer for next pass */
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| 609 |
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| 610 | } while (gdsep);
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| 611 | }
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| 612 | }
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| 613 |
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| 614 | DB_EXIT(wrote ? "cslice - slice written" : "cslice - no write");
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| 615 |
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| 616 | return(wrote);
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| 617 | }
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[0580615] | 618 |
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[f40a309] | 619 | /* |
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| 620 |
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[7258c6a] | 621 | */
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[f40a309] | 622 |
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| 623 | /*
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| 624 | =============================================================================
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| 625 | clrsctl() -- clear slice control list and pointers
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| 626 | =============================================================================
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| 627 | */
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| 628 |
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| 629 | void clrsctl(void)
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| 630 | {
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| 631 | register struct gdsel *gdsp, *gnxt, **gp;
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| 632 | register int16_t i;
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| 633 |
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| 634 | gdfsep = gdsp = &gdfsl[0]; /* initialize slice control pool */
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| 635 | gnxt = &gdfsl[1];
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| 636 |
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| 637 | for (i = MAXFSL - 1; i--; ) {
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| 638 |
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| 639 | gdsp->code = 0;
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| 640 | gdsp->note = 0;
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| 641 | gdsp->next = gnxt;
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| 642 |
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| 643 | gdsp++;
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| 644 | gnxt++;
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| 645 | }
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| 646 |
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| 647 | gdsp->code = 0;
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| 648 | gdsp->note = 0;
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| 649 | gdsp->next = (struct gdsel *)0L;
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| 650 |
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| 651 | gp = gdstbc; /* clear gdstbc */
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| 652 |
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| 653 | for (i = NGDSEL; i--; )
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| 654 | *gp++ = (struct gdsel *)0L;
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| 655 |
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| 656 | gp = gdstbn; /* clear gdstbn */
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| 657 |
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| 658 | for (i = NGDSEL; i--; )
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| 659 | *gp++ = (struct gdsel *)0L;
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| 660 |
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| 661 | gp = gdstbp; /* clear gdstbp */
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| 662 |
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| 663 | for (i = NGDSEL; i--; )
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| 664 | *gp++ = (struct gdsel *)0L;
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| 665 |
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[7258c6a] | 666 | sbase = I_SBASE; /* initialize score video RAM offset */
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| 667 | soffset = I_OFFSET; /* initialize scroll register offset */
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[f40a309] | 668 | saddr = &v_score[sbase]; /* initialize score area base address */
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| 669 |
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| 670 | consl = &slices[672]; /* initialize constant slice pointer */
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| 671 | prvsl = &slices[448]; /* initialize previous slice pointer */
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| 672 | cursl = &slices[224]; /* initialize current slice pointer */
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| 673 | nxtsl = &slices[0]; /* initialize next slice pointer */
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| 674 | /* |
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| 675 |
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| 676 | */
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| 677 | {
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| 678 | register uint16_t *p1, *p2, *p3, sword;
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| 679 | uint16_t *p4;
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| 680 |
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| 681 | p1 = consl; /* clear slices */
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| 682 | p2 = nxtsl;
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[6262b5c] | 683 | p3 = cursl;
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| 684 | p4 = prvsl;
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| 685 |
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| 686 | for (i = 224; i--; ) {
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| 687 |
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| 688 | sword = *p1++;
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| 689 | *p2++ = sword;
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| 690 | *p3++ = sword;
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| 691 | *p4++ = sword;
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| 692 | }
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| 693 | }
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| 694 | }
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| 695 |
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