126 lines
2.7 KiB
C
126 lines
2.7 KiB
C
#include <stdint.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <curses.h>
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#include <termios.h>
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#include "emul.h"
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#define WCOLS 80
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#define WLINES 32
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// in sync with glue.asm
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#define RAMSTART 0x900
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#define STDIO_PORT 0x00
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// This binary is also used for automated tests and those tests, when
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// failing, send a non-zero value to RET_PORT to indicate failure
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#define RET_PORT 0x01
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// Port for block reads. Write 2 bytes, MSB first, on that port and then
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// read 1024 bytes from the DATA port.
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#define BLK_PORT 0x03
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#define BLKDATA_PORT 0x04
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#define SETX_PORT 0x05
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#define SETY_PORT 0x06
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static FILE *fp;
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static int retcode = 0;
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WINDOW *bw, *dw, *w;
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void debug_panel()
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{
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char buf[30];
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emul_debugstr(buf);
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mvwaddnstr(dw, 0, 0, buf, 30);
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wrefresh(dw);
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}
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static uint8_t iord_stdio()
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{
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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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return (uint8_t)c;
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}
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static void iowr_stdio(uint8_t val)
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{
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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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static void iowr_ret(uint8_t val)
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{
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retcode = val;
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}
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static void iowr_setx(uint8_t val)
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{
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int y, x; getyx(w, y, x);
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wmove(w, y, val);
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}
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static void iowr_sety(uint8_t val)
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{
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int y, x; getyx(w, y, x);
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wmove(w, val, x);
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}
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int main(int argc, char *argv[])
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{
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Machine *m = emul_init();
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if (m == NULL) {
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return 1;
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}
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m->ramstart = RAMSTART;
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m->iord[STDIO_PORT] = iord_stdio;
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m->iowr[STDIO_PORT] = iowr_stdio;
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m->iowr[RET_PORT] = iowr_ret;
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m->iowr[SETX_PORT] = iowr_setx;
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m->iowr[SETY_PORT] = iowr_sety;
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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 (emul_step());
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fclose(fp);
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} else if (argc == 1) {
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fp = NULL;
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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 (emul_steps(1000)) {
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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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} else {
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fprintf(stderr, "Usage: ./forth [filename]\n");
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retcode = 1;
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}
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emul_deinit();
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return retcode;
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}
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