view blastcpm.c @ 1337:d092c15246a3

Initial stab at horizontal border when VDP test register layer selection is in effect for H40. Extended horizontal borders in Titancade scene and ninja escape scene mostly correct now
author Michael Pavone <pavone@retrodev.com>
date Sat, 29 Apr 2017 16:51:57 -0700
parents 8f14767661fa
children 2455662378ed ca2336469397
line wrap: on
line source

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <sys/select.h>

#include "z80_to_x86.h"
#include "util.h"

uint8_t ram[64 * 1024];

#define START_OFF 0x100
#define OS_START 0xE400
#define OS_RESET 0xE403
int headless = 1;

void z80_next_int_pulse(z80_context * context)
{
	context->int_pulse_start = context->int_pulse_end = CYCLE_NEVER;
}

void render_errorbox(char *title, char *message)
{
}

void render_infobox(char *title, char *message)
{
}

void *console_write(uint32_t address, void *context, uint8_t value)
{
	putchar(value);
	return context;
}

uint8_t console_read(uint32_t address, void *context)
{
	return getchar();
}

void *console_flush_write(uint32_t address, void *context, uint8_t value)
{
	fflush(stdout);
	return context;
}

uint8_t console_status_read(uint32_t address, void *context)
{
	fd_set read_fds;
	FD_ZERO(&read_fds);
	struct timeval timeout;
	timeout.tv_sec = 0;
	timeout.tv_usec = 0;
	FD_SET(fileno(stdin), &read_fds);
	return select(fileno(stdin)+1, &read_fds, NULL, NULL, &timeout) > 0; 
}

void *exit_write(uint32_t address, void *context, uint8_t value)
{
	exit(0);
	return context;
}

const memmap_chunk z80_map[] = {
	{ 0x0000, 0x10000,  0xFFFF, 0, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram, NULL, NULL, NULL, NULL},
};

const memmap_chunk io_map[] = {
	{ 0x0, 0x1, 0xFFFF, 0, 0, 0, NULL, NULL, NULL, console_read, console_write},
	{ 0x1, 0x2, 0xFFFF, 0, 0, 0, NULL, NULL, NULL, console_status_read, console_flush_write},
	{ 0x2, 0x3, 0xFFFF, 0, 0, 0, NULL, NULL, NULL, NULL, exit_write},
};

int main(int argc, char **argv)
{
	FILE *f = fopen("fake_cpm.bin", "rb");
	long fsize = file_size(f);
	if (fsize > sizeof(ram) - OS_START) {
		fsize = sizeof(ram) - OS_START;
	}
	if (fread(ram + OS_START, 1, fsize, f) != fsize) {
		fprintf(stderr, "Error reading from fake_cpm.bin\n");
		exit(1);
	}
	f = fopen(argv[1], "rb");
	fsize = file_size(f);
	if (fsize > OS_START - START_OFF) {
		fsize = OS_START - START_OFF;
	}
	if (fread(ram + START_OFF, 1, fsize, f) != fsize) {
		fprintf(stderr, "Error reading from file %s\n", argv[1]);
		exit(1);
	}
	fclose(f);
	ram[0] = 0xC3;
	ram[1] = OS_RESET & 0xFF;
	ram[2] = OS_RESET >> 8;
	ram[5] = 0xC3;
	ram[6] = OS_START & 0xFF;
	ram[7] = OS_START >> 8;
	
	z80_options opts;
	z80_context *context;
	init_z80_opts(&opts, z80_map, 1, io_map, 3, 1, 0xFF);
	context = init_z80_context(&opts);
	for(;;)
	{
		z80_run(context, 1000000);
		context->current_cycle = 0;
	}
	return 0;
}