mirror of
https://github.com/RyuKojiro/apple1.git
synced 2024-06-29 01:29:41 +00:00
a75d31065c
git-svn-id: svn+ssh://svn.phoenixbox.net/svn/apple1/trunk@32 64f78de7-aa59-e511-a0e8-0002a5492df0
83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
//
|
|
// main.c
|
|
// apple1
|
|
//
|
|
// Created by Daniel Loffgren on 9/12/15.
|
|
// Copyright (c) 2015 Daniel Loffgren. All rights reserved.
|
|
//
|
|
|
|
#include <v6502/cpu.h>
|
|
#include <v6502/mem.h>
|
|
#include <stdio.h>
|
|
#include "pia.h"
|
|
#include <unistd.h>
|
|
#include <dis6502/reverse.h>
|
|
#include <v6502/log.h>
|
|
|
|
#define ROM_START 0xF000
|
|
#define ROM_SIZE 0x00FF
|
|
#define RESET_VECTOR 0xFF00
|
|
|
|
void fault(void *ctx, const char *e) {
|
|
(*(int *)ctx)++;
|
|
}
|
|
|
|
static void loadRomFile(v6502_memory *mem, const char *fname, uint16_t address) {
|
|
FILE *f = fopen(fname, "r");
|
|
|
|
if (!f) {
|
|
fprintf(stderr, "Could not read from \"%s\"!\n", fname);
|
|
return;
|
|
}
|
|
|
|
uint8_t byte;
|
|
uint16_t offset = 0;
|
|
|
|
while (fread(&byte, 1, 1, f)) {
|
|
mem->bytes[address + (offset++)] = byte;
|
|
}
|
|
|
|
fprintf(stderr, "loaded \"%s\" at 0x%04x\n", fname, address);
|
|
|
|
fclose(f);
|
|
}
|
|
|
|
uint8_t romMirrorCallback(struct _v6502_memory *memory, uint16_t offset, int trap, void *context) {
|
|
return memory->bytes[offset % ROM_SIZE];
|
|
}
|
|
|
|
int main(int argc, const char * argv[])
|
|
{
|
|
int faulted = 0;
|
|
|
|
v6502_cpu *cpu = v6502_createCPU();
|
|
cpu->memory = v6502_createMemory(v6502_memoryStartCeiling + 1);
|
|
cpu->fault_callback = fault;
|
|
cpu->fault_context = &faulted;
|
|
|
|
// Load Woz Monitor
|
|
for (uint16_t start = ROM_START;
|
|
start < v6502_memoryStartCeiling && start >= ROM_START;
|
|
start += ROM_SIZE + 1) {
|
|
loadRomFile(cpu->memory, "apple1.rom", start);
|
|
//v6502_map(cpu->memory, start, ROM_SIZE, romMirrorCallback, NULL, NULL);
|
|
}
|
|
|
|
// Attach PIA
|
|
a1pia *pia = pia_create(cpu->memory);
|
|
|
|
v6502_reset(cpu);
|
|
|
|
FILE *asmfile = fopen("runtime.s", "w");
|
|
while (!faulted) {
|
|
dis6502_printAnnotatedInstruction(asmfile, cpu, cpu->pc);
|
|
v6502_step(cpu);
|
|
v6502_printCpuState(asmfile, cpu);
|
|
}
|
|
fclose(asmfile);
|
|
|
|
pia_destroy(pia);
|
|
v6502_destroyMemory(cpu->memory);
|
|
v6502_destroyCPU(cpu);
|
|
}
|