mirror of
https://github.com/hsoft/collapseos.git
synced 2024-09-08 11:08:46 +10:00
152 lines
3.3 KiB
C
152 lines
3.3 KiB
C
#include <stdint.h>
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#include <stdio.h>
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#include <curses.h>
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#include "cpu.h"
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#define WCOLS 80
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#define WLINES 25
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#ifndef FBIN_PATH
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#error FBIN_PATH needed
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#endif
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#ifndef BLKFS_PATH
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#error BLKFS_PATH needed
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#endif
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extern uint8_t byteregtable[8];
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extern union _bytewordregs_ regs;
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extern INTHOOK INTHOOKS[0x100];
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static FILE *fp;
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static FILE *blkfp;
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static int retcode = 0;
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WINDOW *bw, *dw, *w;
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/* we have a fake INT API:
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INT 1: EMIT. AL = char to spit
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INT 2: KEY. AL = char read
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INT 3: AT-XY. AL = x, BL = y
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INT 4: BLKREAD. AX = blkid, BX = dest addr
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INT 5: BLKWRITE. AX = blkid, BX = src addr
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INT 6: RETCODE. AX = retcode.
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*/
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void int1() {
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uint8_t val = regs.byteregs[regal];
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if (fp != NULL) {
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putchar(val);
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} else {
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if (val >= 0x20 || val == '\n') {
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wechochar(w, val);
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} else if (val == 0x08) {
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int y, x; getyx(w, y, x);
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wmove(w, y, x-1);
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}
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}
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}
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void int2() {
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int c;
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if (fp != NULL) {
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c = getc(fp);
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} else {
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// debug_panel();
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c = wgetch(w);
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}
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if (c == EOF) {
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c = 4; // ASCII EOT
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}
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regs.byteregs[regal] = c;
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}
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void int3() {
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wmove(w, regs.byteregs[regbl], regs.byteregs[regal]);
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}
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void int4() {
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uint16_t blkid = getreg16(regax);
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uint16_t dest = getreg16(regbx);
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fseek(blkfp, blkid*1024, SEEK_SET);
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for (int i=0; i<1024; i++) {
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write86(dest+i, getc(blkfp));
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}
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}
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void int5() {
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uint16_t blkid = getreg16(regax);
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uint16_t dest = getreg16(regbx);
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fseek(blkfp, blkid*1024, SEEK_SET);
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for (int i=0; i<1024; i++) {
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putc(read86(dest+i), blkfp);
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}
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}
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void int6() {
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retcode = getreg16(regax);
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}
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int main(int argc, char *argv[])
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{
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INTHOOKS[1] = int1;
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INTHOOKS[2] = int2;
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INTHOOKS[3] = int3;
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INTHOOKS[4] = int4;
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INTHOOKS[5] = int5;
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INTHOOKS[6] = int6;
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reset86(0);
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fprintf(stderr, "Using blkfs %s\n", BLKFS_PATH);
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blkfp = fopen(BLKFS_PATH, "r+");
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if (!blkfp) {
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fprintf(stderr, "Can't open\n");
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return 1;
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}
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fseek(blkfp, 0, SEEK_END);
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if (ftell(blkfp) < 100 * 1024) {
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fclose(blkfp);
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fprintf(stderr, "emul/blkfs too small, something's wrong, aborting.\n");
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return 1;
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}
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fseek(blkfp, 0, SEEK_SET);
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// initialize memory
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FILE *bfp = fopen(FBIN_PATH, "r");
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if (!bfp) {
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fprintf(stderr, "Can't open forth.bin\n");
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return 1;
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}
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int i = 0;
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int c = getc(bfp);
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while (c != EOF) {
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write86(i++, c);
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c = getc(bfp);
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}
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fclose(bfp);
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w = NULL;
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if (argc == 2) {
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fp = fopen(argv[1], "r");
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if (fp == NULL) {
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fprintf(stderr, "Can't open %s\n", argv[1]);
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return 1;
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}
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while (exec86(100));
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fclose(fp);
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} else if (argc == 1) {
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initscr(); cbreak(); noecho(); nl(); clear();
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// border window
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bw = newwin(WLINES+2, WCOLS+2, 0, 0);
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wborder(bw, 0, 0, 0, 0, 0, 0, 0, 0);
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wrefresh(bw);
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// debug panel
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dw = newwin(1, 30, LINES-1, COLS-30);
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w = newwin(WLINES, WCOLS, 1, 1);
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scrollok(w, 1);
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while (exec86(100)) {
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//debug_panel();
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}
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nocbreak(); echo(); delwin(w); delwin(bw); delwin(dw); endwin();
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printf("\nDone!\n");
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//emul_printdebug();
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}
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return retcode;
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}
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