[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | vtyper.c -- virtual typewriter support functions
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| 4 | Version 8 -- 1989-11-14 -- D.N. Lynx Crowe
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| 5 | =============================================================================
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| 6 | */
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| 7 |
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[b28a12e] | 8 | #include "ram.h"
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[f40a309] | 9 |
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| 10 | /* virtual typewriter display line constants */
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| 11 |
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| 12 | /* "123456789012345678901234567890" */
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[7258c6a] | 13 | int8_t vtlin1[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ | "; /* top */
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| 14 | int8_t vtlin2[] = "abcdefghijklmnopqrstuvwxyz -*-"; /* center */
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| 15 | int8_t vtlin3[] = " 0123456789+-/#().,:;!?&<> | "; /* bottom */
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[f40a309] | 16 |
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| 17 | /* |
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| 18 |
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| 19 | */
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| 20 |
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| 21 | /*
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| 22 | =============================================================================
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| 23 | vtsetup() -- setup the virtual typewriter for data entry
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| 24 |
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| 25 | This sets up the parameters for the virtual typewriter:
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| 26 |
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| 27 | obj VSDD display object pointer
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| 28 | dsp character display function
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| 29 | col data entry area -- leftmost column on the screen
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| 30 | ptr data string base pointer
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| 31 | tr typewriter window topmost row
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| 32 | tc typewriter window leftmost column
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| 33 | adv data entry cursor advance function
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| 34 | bsp data entry cursor backspace function
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| 35 | cup data entry cursor up function
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| 36 | cdn data entry cursor down function
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| 37 | stop virtual typewriter end function
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| 38 | fg data entry text foreground color
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| 39 | bg data entry text background color
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| 40 | =============================================================================
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| 41 | */
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[7258c6a] | 42 |
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[f40a309] | 43 | void vtsetup(uint16_t *obj, int16_t (*dsp)(), int16_t col, int8_t *ptr, int16_t tr, int16_t tc, int16_t (*adv)(), int16_t (*bsp)(), int16_t (*cup)(), int16_t (*cdn)(), int16_t (*stop)(), uint16_t fg, uint16_t bg)
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| 44 | {
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| 45 | vtobj = obj; /* setup object pointer */
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| 46 | vt_adv = adv; /* setup cursor advance function pointer */
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| 47 | vt_bsp = bsp; /* setup cursor backspace function pointer */
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| 48 | vt_cup = cup; /* setup cursor up function pointer */
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| 49 | vt_cdn = cdn; /* setup cursor down function pointer */
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| 50 | vt_dsp = dsp; /* setup display function pointer */
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| 51 | vt_stop = stop; /* setup exit typewriter function pointer */
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| 52 | vtwrow = tr; /* setup typewriter window row */
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| 53 | vtwcol = tc; /* setup typewriter window column */
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| 54 | vtdecol = col; /* setup data entry base column */
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| 55 | vtdeptr = ptr; /* setup data entry area base address */
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| 56 | vtfgval = exp_c(fg); /* setup foreground color value */
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| 57 | vtbgval = exp_c(bg); /* setup background color value */
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| 58 | SetPri(TTCURS, TTCPRI); /* turn on the typewriter cursor */
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| 59 | vtxval = CTOX(tc); /* setup vt x value */
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| 60 | vtyval = YTOR(tr); /* setup vt y value */
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| 61 | ttcpos(tr, tc); /* position the typewriter cusor */
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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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| 67 |
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| 68 | /*
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| 69 | =============================================================================
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| 70 | vtcxupd() -- update virtual typewriter cursor x value
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| 71 |
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| 72 | Standard cursor x update for use when the typewriter is displayed.
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| 73 |
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| 74 | Reference this in the cursor x update for the particular display
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| 75 | when the virtual typewriter is displayed.
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| 76 | =============================================================================
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[0580615] | 77 | */
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[f40a309] | 78 |
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| 79 | void vtcxupd(void)
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| 80 | {
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| 81 | vtccol = XTOC(vtxval += cxrate);
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| 82 |
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| 83 | if (vtccol > (vtwcol + 29))
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| 84 | vtxval = CTOX(vtccol = vtwcol + 29);
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| 85 | else if (vtccol < vtwcol)
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| 86 | vtxval = CTOX(vtccol = vtwcol);
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| 87 | }
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| 88 |
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| 89 | /*
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| 90 | =============================================================================
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| 91 | vtcyupd() -- update virtual typewriter cursor y value
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| 92 |
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| 93 | Standard cursor y update for use when the typewriter is displayed.
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| 94 |
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| 95 | Reference this in the cursor y update for the particular display
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| 96 | when the virtual typewriter is displayed.
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| 97 | =============================================================================
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[0580615] | 98 | */
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[f40a309] | 99 |
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| 100 | void vtcyupd(void)
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| 101 | {
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| 102 | vtcrow = YTOR(vtyval += cyrate);
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| 103 |
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| 104 | if (vtcrow > (vtwrow + 2))
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| 105 | vtyval = RTOY(vtcrow = vtwrow + 2);
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| 106 | else if (vtcrow < vtwrow)
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| 107 | vtyval = RTOY(vtcrow = vtwrow);
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| 108 | }
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| 109 |
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| 110 | /* |
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| 111 |
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| 112 | */
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| 113 |
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| 114 | /*
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| 115 | =============================================================================
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| 116 | vtdisp() -- virtual typewriter data entry display (4 bit graphics)
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| 117 |
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| 118 | Standard function for virtual typewriter output to a graphic screen.
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| 119 | Assumes that the graphic object is a 4 bit per pixel object in bank 0.
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[7258c6a] | 120 | =============================================================================
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[f40a309] | 121 | */
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| 122 |
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| 123 | void vtdisp(uint16_t *obj, uint16_t fg, uint16_t bg, int16_t row, int16_t col, int8_t *buf)
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| 124 | {
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| 125 |
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| 126 | if (v_regs[5] & 0x0180)
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| 127 | vbank(0);
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| 128 |
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| 129 | vcputsv(obj, 64, fg, bg, row, col, buf, 14);
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| 130 | }
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| 131 |
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| 132 | /* |
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| 133 |
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| 134 | */
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| 135 |
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| 136 | /*
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| 137 | =============================================================================
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| 138 | vtyper() -- do data entry with the virtual typewriter
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| 139 |
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| 140 | Called when enter is hit to do data entry from the select function
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[7258c6a] | 141 | for the display. Returns TRUE if data entry occurred, FALSE otherwise.
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[f40a309] | 142 | =============================================================================
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| 143 | */
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| 144 |
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| 145 | int16_t vtyper(void)
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| 146 | {
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| 147 | /* check for data entry */
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| 148 |
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| 149 | if (vtccol < (vtwcol + 26)) { /* enter data */
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| 150 |
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| 151 | /* convert (vtcrow, vtccol) to data entry character */
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| 152 |
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| 153 | if (vtcrow EQ vtwrow)
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| 154 | vtdechr = vtlin1[vtccol - vtwcol];
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| 155 | else if (vtcrow EQ (vtwrow + 1))
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| 156 | vtdechr = vtlin2[vtccol - vtwcol];
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| 157 | else if (vtcrow EQ (vtwrow + 2))
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| 158 | vtdechr = vtlin3[vtccol - vtwcol];
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| 159 | else {
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| 160 |
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| 161 | vtdechr = '*'; /* error -- bad row */
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| 162 | return(FALSE);
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| 163 | }
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| 164 |
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| 165 | vtdeptr[stccol - vtdecol] = vtdechr; /* update data area */
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| 166 |
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| 167 | /* update the screen */
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| 168 |
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| 169 | bfs[0] = vtdechr;
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| 170 | bfs[1] = '\0';
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| 171 |
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| 172 | (*vt_dsp)(vtobj, vtfgval, vtbgval, stcrow, stccol, bfs);
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| 173 |
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| 174 | (*vt_adv)(); /* advance cursor */
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| 175 | return(TRUE);
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| 176 | /* |
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| 177 |
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| 178 | */
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| 179 | /* check for exit or cursor controls */
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| 180 |
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| 181 | } else if ((vtcrow EQ (vtwrow + 1))
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| 182 | AND (vtccol EQ (vtwcol + 28))) { /* exit */
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| 183 |
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| 184 | objclr(TTCPRI); /* turn off typewriter cursor */
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| 185 | (*vt_stop)(); /* refresh typewriter window */
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| 186 | return(FALSE);
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| 187 |
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| 188 | } else if ((vtcrow EQ vtwrow)
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| 189 | AND (vtccol EQ (vtwcol + 28))) { /* cursor up */
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| 190 |
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| 191 | (*vt_cup)(); /* move cursor up a row */
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| 192 | return(FALSE);
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| 193 |
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| 194 | } else if ((vtcrow EQ (vtwrow + 2))
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| 195 | AND (vtccol EQ (vtwcol + 28))) { /* cursor down */
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| 196 |
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| 197 | (*vt_cdn)(); /* move cursor down a row */
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| 198 | return(FALSE);
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| 199 |
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| 200 | } else if ((vtcrow EQ (vtwrow + 1))
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| 201 | AND (vtccol EQ (vtwcol + 27))) { /* cursor lft */
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| 202 |
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| 203 | (*vt_bsp)(); /* move cursor left a column */
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| 204 | return(FALSE);
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| 205 |
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[599d89b] | 206 | } else if ((vtcrow EQ (vtwrow + 1))
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| 207 | AND (vtccol EQ (vtwcol + 29))) { /* cursor rgt */
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[f40a309] | 208 |
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| 209 | (*vt_adv)(); /* move cursor right a column */
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[6262b5c] | 210 | return(FALSE);
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| 211 | } else
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| 212 | return(FALSE);
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| 213 | }
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| 214 |
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| 215 |
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