[a06aa8b] | 1 | /*
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| 2 | * Copyright (C) 2017 The Contributors
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| 3 | *
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| 4 | * This program is free software: you can redistribute it and/or modify
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| 5 | * it under the terms of the GNU General Public License as published by
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| 6 | * the Free Software Foundation, either version 3 of the License, or (at
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| 7 | * your option) any later version.
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| 8 | *
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| 9 | * This program is distributed in the hope that it will be useful, but
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| 10 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 12 | * General Public License for more details.
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| 13 | *
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| 14 | * A copy of the GNU General Public License can be found in the file
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[2147e53] | 15 | * "gpl.txt" in the top directory of this repository.
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[a06aa8b] | 16 | */
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| 17 |
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| 18 | #include <all.h>
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| 19 |
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[4c71d39] | 20 | #define ver(...) _ver(ser_verbose, 0, __VA_ARGS__)
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| 21 | #define ver2(...) _ver(ser_verbose, 1, __VA_ARGS__)
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| 22 | #define ver3(...) _ver(ser_verbose, 2, __VA_ARGS__)
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[a06aa8b] | 23 |
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[c5b6c90] | 24 | int32_t ser_verbose = 0;
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| 25 |
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[a2b296e] | 26 | #define WIN_W (1520 / 2)
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| 27 | #define WIN_H (950 / 2)
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[c5b6c90] | 28 |
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[0726522] | 29 | #define BEL_CYC 10000
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[657abdf] | 30 | #define MOU_CYC 10000
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[0726522] | 31 |
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[a2b296e] | 32 | #if defined EMU_WIN
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| 33 | #define MOU_DIV 64
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[f0af168] | 34 | #elif defined EMU_OS_X
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| 35 | #define MOU_DIV 1
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[a2b296e] | 36 | #else
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| 37 | #define MOU_DIV 4
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| 38 | #endif
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| 39 |
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[bb4fd0c] | 40 | #define CON_W 80
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| 41 | #define CON_H 25
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| 42 |
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| 43 | #define CON_BGR 0x00000000
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[0726522] | 44 | #define CON_BEL 0x00808080
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[bb4fd0c] | 45 | #define CON_CUR 0x00e87000
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| 46 | #define CON_FGR ((SDL_Color){ .r = 255, .b = 255, .g = 255, .a = 255 })
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| 47 |
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[657abdf] | 48 | #define BUF_SZ 16
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| 49 |
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[3c30832] | 50 | #define REG_IER_ISR 0
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| 51 | #define REG_CFR_SR 1
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| 52 | #define REG_CDR_TBR 2
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| 53 | #define REG_TDR_RDR 3
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| 54 |
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| 55 | typedef struct {
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[657abdf] | 56 | int32_t buf_hd;
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| 57 | int32_t buf_tl;
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| 58 | uint8_t buf[BUF_SZ];
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[375f7fb] | 59 | bool irq_r;
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| 60 | bool irq_t;
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| 61 | bool rdr_ok;
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[3c30832] | 62 | uint8_t rdr;
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| 63 | } state_t;
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| 64 |
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| 65 | static state_t state[] = {
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[657abdf] | 66 | { .buf_hd = 0, .buf_tl = 0, .irq_r = false, .irq_t = false, .rdr_ok = false, .rdr = 0x00 },
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| 67 | { .buf_hd = 0, .buf_tl = 0, .irq_r = false, .irq_t = false, .rdr_ok = false, .rdr = 0x00 }
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[3c30832] | 68 | };
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| 69 |
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[8c8a883] | 70 | static uint8_t mem[CON_H][CON_W];
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[bb4fd0c] | 71 |
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[caff491] | 72 | static SDL_Window *win;
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[4ed9bfe] | 73 | uint32_t ser_win;
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| 74 |
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[caff491] | 75 | static SDL_Renderer *ren;
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[bdd5a63] | 76 | static SDL_atomic_t frame;
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[caff491] | 77 |
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[bb4fd0c] | 78 | static TTF_Font *fon;
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| 79 | static int32_t fon_w, fon_h;
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| 80 |
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| 81 | static int32_t sur_w, sur_h;
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| 82 | static SDL_Surface *sur;
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| 83 |
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| 84 | static int32_t cur_x = 0, cur_y = 0;
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[0726522] | 85 | static int32_t bel = 0;
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[bb4fd0c] | 86 |
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[657abdf] | 87 | static int32_t mou;
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| 88 | static int32_t mou_dx, mou_dy;
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| 89 | static bool mou_l, mou_r;
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| 90 |
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[bb4fd0c] | 91 | static void scroll(void)
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| 92 | {
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[8c8a883] | 93 | memmove(mem, mem + 1, (CON_H - 1) * CON_W);
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[bb4fd0c] | 94 | memset(mem + (CON_H - 1), ' ', CON_W);
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| 95 | }
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| 96 |
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| 97 | static void forw(void)
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| 98 | {
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| 99 | if (cur_x < CON_W - 1) {
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| 100 | ++cur_x;
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| 101 | return;
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| 102 | }
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| 103 |
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| 104 | if (cur_y == CON_H - 1) {
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| 105 | cur_x = 0;
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| 106 | scroll();
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| 107 | return;
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| 108 | }
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| 109 |
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| 110 | cur_x = 0;
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| 111 | ++cur_y;
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| 112 | }
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| 113 |
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| 114 | static void back(void)
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| 115 | {
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| 116 | if (cur_x > 0) {
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| 117 | --cur_x;
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| 118 | return;
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| 119 | }
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| 120 |
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| 121 | if (cur_y == 0) {
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| 122 | return;
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| 123 | }
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| 124 |
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| 125 | cur_x = CON_W - 1;
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| 126 | --cur_y;
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| 127 | }
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| 128 |
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| 129 | static void down(void)
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| 130 | {
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| 131 | if (cur_y < CON_H - 1) {
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| 132 | ++cur_y;
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| 133 | return;
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| 134 | }
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| 135 |
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| 136 | scroll();
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| 137 | }
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| 138 |
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| 139 | static void echo(uint8_t c)
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| 140 | {
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[2a75e87] | 141 | if (c < 32) {
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| 142 | switch (c) {
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| 143 | case '\r':
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| 144 | cur_x = 0;
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| 145 | break;
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[bb4fd0c] | 146 |
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[2a75e87] | 147 | case '\n':
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| 148 | down();
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| 149 | break;
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[bb4fd0c] | 150 |
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[2a75e87] | 151 | case '\b':
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| 152 | back();
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| 153 | break;
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[bb4fd0c] | 154 |
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[0726522] | 155 | case '\a':
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| 156 | bel = BEL_CYC;
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| 157 | break;
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| 158 |
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[2a75e87] | 159 | default:
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[bb4fd0c] | 160 | echo('^');
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| 161 | echo((uint8_t)(c + '@'));
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| 162 | return;
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| 163 | }
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[2a75e87] | 164 | }
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| 165 | else {
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[bb4fd0c] | 166 | mem[cur_y][cur_x] = c;
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| 167 | forw();
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| 168 | }
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| 169 |
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[bdd5a63] | 170 | SDL_AtomicAdd(&frame, 1);
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[bb4fd0c] | 171 | }
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| 172 |
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[657abdf] | 173 | static void xmit(int32_t un)
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| 174 | {
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| 175 | int32_t i = state[un].buf_tl;
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| 176 | ver2("ser xmit %d %d", i, state[un].buf_hd);
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| 177 |
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| 178 | if (i >= state[un].buf_hd) {
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| 179 | return;
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| 180 | }
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| 181 |
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| 182 | uint8_t byte = state[un].buf[i % BUF_SZ];
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| 183 | ver2("ser xmit 0x%02x", byte);
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| 184 |
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| 185 | state[un].rdr = byte;
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| 186 | state[un].rdr_ok = true;
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| 187 | state[un].irq_r = true;
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| 188 |
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| 189 | state[un].buf_tl = i + 1;
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| 190 |
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| 191 | if (state[un].buf_tl >= BUF_SZ) {
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| 192 | state[un].buf_hd -= BUF_SZ;
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| 193 | state[un].buf_tl -= BUF_SZ;
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| 194 | ver2("ser adj %d %d", state[un].buf_tl, state[un].buf_hd);
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| 195 | }
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| 196 | }
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| 197 |
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| 198 | static void out_lk(int32_t un, uint8_t c)
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| 199 | {
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| 200 | int32_t i = state[un].buf_hd;
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| 201 | ver2("ser out %d %d 0x%02x", state[un].buf_tl, i, c);
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| 202 |
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| 203 | if (i >= state[un].buf_tl + BUF_SZ) {
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| 204 | err("serial port %d losing data", un);
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| 205 | return;
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| 206 | }
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| 207 |
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| 208 | state[un].buf[i % BUF_SZ] = c;
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| 209 | state[un].buf_hd = i + 1;
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| 210 |
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| 211 | if (!state[un].irq_r && !state[un].rdr_ok) {
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| 212 | xmit(un);
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| 213 | }
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| 214 | }
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| 215 |
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[caff491] | 216 | static void out(int32_t un, uint8_t c)
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| 217 | {
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[bdd5a63] | 218 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 219 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 220 | }
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| 221 |
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[657abdf] | 222 | out_lk(un, c);
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[bdd5a63] | 223 |
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| 224 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
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| 225 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
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| 226 | }
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| 227 | }
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| 228 |
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[657abdf] | 229 | static void mouse(uint8_t c)
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| 230 | {
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| 231 | if (c == 't') {
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| 232 | ver2("ser mou init");
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| 233 | }
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| 234 |
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| 235 | out_lk(0, 'V');
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| 236 | out_lk(0, 'O');
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| 237 | }
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| 238 |
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[bdd5a63] | 239 | void ser_sdl(void)
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| 240 | {
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| 241 | ver3("ser_sdl()");
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| 242 |
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| 243 | static int32_t last = 0;
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| 244 | int32_t now = SDL_AtomicGet(&frame);
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| 245 |
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| 246 | if (last == now) {
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| 247 | ver3("no update");
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| 248 | return;
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| 249 | }
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| 250 |
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| 251 | last = now;
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| 252 |
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| 253 | if (SDL_FillRect(sur, NULL, bel == 0 ? CON_BGR : CON_BEL) < 0) {
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| 254 | fail("SDL_FillRect() failed: %s", SDL_GetError());
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| 255 | }
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| 256 |
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| 257 | if (SDL_FillRect(sur, &(SDL_Rect){
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| 258 | .x = cur_x * fon_w,
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| 259 | .y = cur_y * fon_h,
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| 260 | .w = fon_w,
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| 261 | .h = fon_h
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| 262 | }, CON_CUR) < 0) {
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| 263 | fail("SDL_FillRect() failed: %s", SDL_GetError());
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| 264 | }
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| 265 |
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| 266 | for (int32_t y = 0; y < CON_H; ++y) {
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| 267 | char line[CON_W + 1];
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[8c8a883] | 268 | line[CON_W] = 0;
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[bdd5a63] | 269 |
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| 270 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 271 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 272 | }
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| 273 |
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[8c8a883] | 274 | memcpy(line, mem[y], CON_W);
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[bdd5a63] | 275 |
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| 276 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
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| 277 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
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| 278 | }
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| 279 |
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| 280 | SDL_Surface *lin = TTF_RenderText_Blended(fon, line, CON_FGR);
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| 281 |
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| 282 | if (lin == NULL) {
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| 283 | fail("TTF_RenderText_Blended() failed: %s", TTF_GetError());
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| 284 | }
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| 285 |
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| 286 | if (SDL_BlitSurface(lin, NULL, sur, &(SDL_Rect){
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| 287 | .x = 0,
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| 288 | .y = y * fon_h,
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| 289 | .w = CON_W * fon_w,
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| 290 | .h = fon_h
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| 291 | })) {
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| 292 | fail("SDL_BlitSurface() failed: %s", SDL_GetError());
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| 293 | }
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| 294 |
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| 295 | SDL_FreeSurface(lin);
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| 296 | }
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| 297 |
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| 298 | SDL_Texture *tex = SDL_CreateTextureFromSurface(ren, sur);
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| 299 |
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| 300 | if (tex == NULL) {
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| 301 | fail("SDL_CreateTextureFromSurface() failed: %s", SDL_GetError());
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| 302 | }
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| 303 |
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| 304 | if (SDL_RenderCopy(ren, tex, NULL, NULL) < 0) {
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| 305 | fail("SDL_RenderCopy() failed: %s", SDL_GetError());
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| 306 | }
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| 307 |
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| 308 | SDL_DestroyTexture(tex);
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| 309 | SDL_RenderPresent(ren);
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[caff491] | 310 | }
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| 311 |
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[bb4fd0c] | 312 | void ser_key(SDL_KeyboardEvent *ev)
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| 313 | {
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| 314 | switch (ev->keysym.sym) {
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| 315 | case SDLK_BACKSPACE:
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[3c30832] | 316 | out(1, '\b');
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[bb4fd0c] | 317 | break;
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| 318 |
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| 319 | case SDLK_RETURN:
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[3c30832] | 320 | out(1, '\r');
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[bb4fd0c] | 321 | break;
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[a23f3d9] | 322 |
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| 323 | default:
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| 324 | if ((ev->keysym.mod & KMOD_CTRL) != 0 &&
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| 325 | ev->keysym.sym >= SDLK_a && ev->keysym.sym <= SDLK_z) {
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[3c30832] | 326 | out(1, (uint8_t)(ev->keysym.sym - SDLK_a + 1));
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[a23f3d9] | 327 | }
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| 328 |
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| 329 | break;
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[bb4fd0c] | 330 | }
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| 331 | }
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| 332 |
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| 333 | void ser_text(SDL_TextInputEvent *ev)
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| 334 | {
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| 335 | for (int32_t i = 0; ev->text[i] != 0; ++i) {
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[3c30832] | 336 | out(1, (uint8_t)ev->text[i]);
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[bb4fd0c] | 337 | }
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| 338 | }
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| 339 |
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[657abdf] | 340 | static void mou_ev(void)
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| 341 | {
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| 342 | ver2("ser mou ev (%d, %d) %c %c",
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| 343 | mou_dx, mou_dy, mou_l ? 'l' : '-', mou_r ? 'r' : '-');
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| 344 |
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[a2b296e] | 345 | int32_t dx = mou_dx / MOU_DIV;
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| 346 | int32_t dy = mou_dy / MOU_DIV;
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[657abdf] | 347 |
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| 348 | if (dx < -128) {
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| 349 | dx = -128;
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| 350 | }
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| 351 | else if (dx > 127) {
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| 352 | dx = 127;
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| 353 | }
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| 354 |
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| 355 | if (dy < -128) {
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| 356 | dy = -128;
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| 357 | }
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| 358 | else if (dy > 127) {
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| 359 | dy = 127;
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| 360 | }
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| 361 |
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| 362 | dx = dx & 0xff;
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| 363 | dy = dy & 0xff;
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| 364 |
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| 365 | int32_t b1 = 0x40;
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| 366 |
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| 367 | if (mou_l) {
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| 368 | b1 |= 0x20;
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| 369 | }
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| 370 |
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| 371 | if (mou_r) {
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| 372 | b1 |= 0x10;
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| 373 | }
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| 374 |
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| 375 | b1 |= (dy & 0xc0) >> 4;
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| 376 | b1 |= (dx & 0xc0) >> 6;
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| 377 |
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| 378 | int32_t b2 = dx & 0x3f;
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| 379 | int32_t b3 = dy & 0x3f;
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| 380 |
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| 381 | out_lk(0, (uint8_t)b1);
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| 382 | out_lk(0, (uint8_t)b2);
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| 383 | out_lk(0, (uint8_t)b3);
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| 384 |
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| 385 | mou_dx = mou_dy = 0;
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| 386 | }
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| 387 |
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| 388 | static void mou_ev_chk(void)
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| 389 | {
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| 390 | if (--mou > 0) {
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| 391 | return;
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| 392 | }
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| 393 |
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| 394 | mou = MOU_CYC;
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| 395 |
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| 396 | if (mou_dx == 0 && mou_dy == 0) {
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| 397 | return;
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| 398 | }
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| 399 |
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| 400 | mou_ev();
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| 401 | }
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| 402 |
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| 403 | void ser_mou_res(void)
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| 404 | {
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| 405 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 406 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 407 | }
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| 408 |
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| 409 | mou = MOU_CYC;
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| 410 | mou_dx = mou_dy = 0;
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| 411 | mou_l = mou_r = false;
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| 412 |
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| 413 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
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| 414 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
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| 415 | }
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| 416 | }
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| 417 |
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| 418 | void ser_mou_mov(SDL_MouseMotionEvent *ev)
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| 419 | {
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| 420 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 421 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 422 | }
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| 423 |
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| 424 | mou_dx += ev->xrel;
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| 425 | mou_dy += ev->yrel;
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| 426 |
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| 427 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
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| 428 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
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| 429 | }
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| 430 | }
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| 431 |
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| 432 | void ser_mou_dn(SDL_MouseButtonEvent *ev)
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| 433 | {
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| 434 | if (SDL_LockMutex(cpu_mutex) < 0) {
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| 435 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
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| 436 | }
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| 437 |
|
---|
| 438 | if (ev->button == SDL_BUTTON_LEFT) {
|
---|
| 439 | mou_l = true;
|
---|
| 440 | }
|
---|
| 441 | else if (ev->button == SDL_BUTTON_RIGHT) {
|
---|
| 442 | mou_r = true;
|
---|
| 443 | }
|
---|
| 444 | else {
|
---|
| 445 | return;
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 | mou_ev();
|
---|
| 449 |
|
---|
| 450 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
|
---|
| 451 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
|
---|
| 452 | }
|
---|
| 453 | }
|
---|
| 454 |
|
---|
| 455 | void ser_mou_up(SDL_MouseButtonEvent *ev)
|
---|
| 456 | {
|
---|
| 457 | if (SDL_LockMutex(cpu_mutex) < 0) {
|
---|
| 458 | fail("SDL_LockMutex() failed: %s", SDL_GetError());
|
---|
| 459 | }
|
---|
| 460 |
|
---|
| 461 | if (ev->button == SDL_BUTTON_LEFT) {
|
---|
| 462 | mou_l = false;
|
---|
| 463 | }
|
---|
| 464 | else if (ev->button == SDL_BUTTON_RIGHT) {
|
---|
| 465 | mou_r = false;
|
---|
| 466 | }
|
---|
| 467 | else {
|
---|
| 468 | return;
|
---|
| 469 | }
|
---|
| 470 |
|
---|
| 471 | mou_ev();
|
---|
| 472 |
|
---|
| 473 | if (SDL_UnlockMutex(cpu_mutex) < 0) {
|
---|
| 474 | fail("SDL_UnlockMutex() failed: %s", SDL_GetError());
|
---|
| 475 | }
|
---|
| 476 | }
|
---|
| 477 |
|
---|
[a06aa8b] | 478 | void ser_init(void)
|
---|
| 479 | {
|
---|
| 480 | ver("ser init");
|
---|
[bb4fd0c] | 481 |
|
---|
[caff491] | 482 | win = SDL_CreateWindow("Serial Console", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
|
---|
| 483 | WIN_W, WIN_H, 0);
|
---|
| 484 |
|
---|
| 485 | if (win == NULL) {
|
---|
| 486 | fail("SDL_CreateWindow() failed: %s", SDL_GetError());
|
---|
| 487 | }
|
---|
| 488 |
|
---|
[4ed9bfe] | 489 | ser_win = SDL_GetWindowID(win);
|
---|
| 490 |
|
---|
| 491 | if (ser_win == 0) {
|
---|
| 492 | fail("SDL_GetWindowID() failed: %s", SDL_GetError());
|
---|
| 493 | }
|
---|
| 494 |
|
---|
[caff491] | 495 | ren = SDL_CreateRenderer(win, -1, 0);
|
---|
| 496 |
|
---|
| 497 | if (ren == NULL) {
|
---|
| 498 | fail("SDL_CreateRenderer() failed: %s", SDL_GetError());
|
---|
| 499 | }
|
---|
| 500 |
|
---|
[bdd5a63] | 501 | SDL_AtomicSet(&frame, 1);
|
---|
| 502 |
|
---|
[0edef06] | 503 | SDL_RWops *ops = SDL_RWFromFile(font, "rb");
|
---|
[bb4fd0c] | 504 |
|
---|
| 505 | if (ops == NULL) {
|
---|
[0edef06] | 506 | fail("error while opening font file %s: %s", font, SDL_GetError());
|
---|
[bb4fd0c] | 507 | }
|
---|
| 508 |
|
---|
| 509 | fon = TTF_OpenFontRW(ops, 1, 32);
|
---|
| 510 |
|
---|
| 511 | if (fon == NULL) {
|
---|
[0edef06] | 512 | fail("error while loading font file %s: %s", font, TTF_GetError());
|
---|
[bb4fd0c] | 513 | }
|
---|
| 514 |
|
---|
| 515 | fon_h = TTF_FontLineSkip(fon);
|
---|
| 516 |
|
---|
| 517 | if (TTF_GlyphMetrics(fon, 'X', NULL, NULL, NULL, NULL, &fon_w) < 0) {
|
---|
| 518 | fail("error while measuring font width: %s", TTF_GetError());
|
---|
| 519 | }
|
---|
| 520 |
|
---|
| 521 | sur_w = CON_W * fon_w;
|
---|
| 522 | sur_h = CON_H * fon_h;
|
---|
| 523 |
|
---|
| 524 | sur = SDL_CreateRGBSurface(0, sur_w, sur_h, 32, 0, 0, 0, 0);
|
---|
| 525 |
|
---|
| 526 | if (sur == NULL) {
|
---|
| 527 | fail("SDL_CreateRGBSurface() failed: %s", SDL_GetError());
|
---|
| 528 | }
|
---|
| 529 |
|
---|
| 530 | for (int32_t y = 0; y < CON_H; ++y) {
|
---|
| 531 | for (int32_t x = 0; x < CON_W; ++x) {
|
---|
| 532 | mem[y][x] = ' ';
|
---|
| 533 | }
|
---|
| 534 | }
|
---|
[a06aa8b] | 535 | }
|
---|
| 536 |
|
---|
| 537 | void ser_quit(void)
|
---|
| 538 | {
|
---|
| 539 | ver("ser quit");
|
---|
[bb4fd0c] | 540 |
|
---|
| 541 | SDL_FreeSurface(sur);
|
---|
| 542 | TTF_CloseFont(fon);
|
---|
[caff491] | 543 |
|
---|
| 544 | SDL_DestroyRenderer(ren);
|
---|
| 545 | SDL_DestroyWindow(win);
|
---|
[a06aa8b] | 546 | }
|
---|
| 547 |
|
---|
[3c30832] | 548 | bool ser_exec(void)
|
---|
[a06aa8b] | 549 | {
|
---|
[4c71d39] | 550 | ver3("ser exec");
|
---|
[0726522] | 551 |
|
---|
| 552 | if (bel > 0) {
|
---|
| 553 | --bel;
|
---|
| 554 |
|
---|
| 555 | if (bel == BEL_CYC - 1 || bel == 0) {
|
---|
[bdd5a63] | 556 | SDL_AtomicAdd(&frame, 1);
|
---|
[0726522] | 557 | }
|
---|
| 558 | }
|
---|
| 559 |
|
---|
[657abdf] | 560 | mou_ev_chk();
|
---|
| 561 |
|
---|
[375f7fb] | 562 | return state[0].irq_r || state[0].irq_t || state[1].irq_r || state[1].irq_t;
|
---|
[a06aa8b] | 563 | }
|
---|
| 564 |
|
---|
| 565 | uint32_t ser_read(uint32_t off, int32_t sz)
|
---|
| 566 | {
|
---|
[4c71d39] | 567 | ver2("ser rd %u:%d", off, sz * 8);
|
---|
[3c30832] | 568 |
|
---|
| 569 | if (sz != 1 || off > 7) {
|
---|
| 570 | fail("invalid ser rd %u:%d", off, sz * 8);
|
---|
| 571 | }
|
---|
| 572 |
|
---|
| 573 | int32_t rg = (int32_t)(off % 4);
|
---|
| 574 | int32_t un = (int32_t)(off / 4);
|
---|
| 575 |
|
---|
| 576 | uint32_t rv;
|
---|
| 577 |
|
---|
| 578 | switch (rg) {
|
---|
| 579 | case REG_IER_ISR:
|
---|
[375f7fb] | 580 | rv = (uint32_t)(0xc0 | (state[un].rdr_ok ? 0x01 : 0x00));
|
---|
| 581 | state[un].irq_r = false;
|
---|
| 582 | state[un].irq_t = false;
|
---|
[3c30832] | 583 | ver2("ISR[%d] 0x%02x", un, rv);
|
---|
| 584 | break;
|
---|
| 585 |
|
---|
| 586 | case REG_TDR_RDR:
|
---|
| 587 | rv = state[un].rdr;
|
---|
[375f7fb] | 588 | state[un].rdr_ok = false;
|
---|
[3c30832] | 589 | ver2("RDR[%d] 0x%02x", un, rv);
|
---|
| 590 | break;
|
---|
| 591 |
|
---|
| 592 | default:
|
---|
| 593 | rv = 0x00;
|
---|
| 594 | break;
|
---|
| 595 | }
|
---|
| 596 |
|
---|
[657abdf] | 597 | if (!state[un].irq_r && !state[un].rdr_ok) {
|
---|
| 598 | xmit(un);
|
---|
| 599 | }
|
---|
| 600 |
|
---|
[3c30832] | 601 | return rv;
|
---|
[a06aa8b] | 602 | }
|
---|
| 603 |
|
---|
| 604 | void ser_write(uint32_t off, int32_t sz, uint32_t val)
|
---|
| 605 | {
|
---|
[4c71d39] | 606 | ver2("ser wr %u:%d 0x%0*x", off, sz * 8, sz * 2, val);
|
---|
[3c30832] | 607 |
|
---|
| 608 | if (sz != 1 || off > 7) {
|
---|
| 609 | fail("invalid ser wr %u:%d", off, sz * 8);
|
---|
| 610 | }
|
---|
| 611 |
|
---|
| 612 | int32_t rg = (int32_t)(off % 4);
|
---|
| 613 | int32_t un = (int32_t)(off / 4);
|
---|
| 614 |
|
---|
| 615 | switch (rg) {
|
---|
| 616 | case REG_TDR_RDR:
|
---|
| 617 | ver2("TDR[%d] 0x%02x", un, val);
|
---|
[657abdf] | 618 |
|
---|
| 619 | if (un == 1) {
|
---|
| 620 | echo((uint8_t)val);
|
---|
| 621 | }
|
---|
| 622 | else {
|
---|
| 623 | mouse((uint8_t)val);
|
---|
| 624 | }
|
---|
| 625 |
|
---|
[375f7fb] | 626 | state[un].irq_t = true;
|
---|
[3c30832] | 627 | break;
|
---|
| 628 |
|
---|
| 629 | default:
|
---|
| 630 | break;
|
---|
| 631 | }
|
---|
[a06aa8b] | 632 | }
|
---|