Mercurial > repos > blastem
view trans.c @ 1893:7b62e6805e6a
Only look at low 24-bits of reset vector in ROM type detection heuristic
author | Michael Pavone <pavone@retrodev.com> |
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date | Thu, 05 Dec 2019 09:33:30 -0800 |
parents | 0c1491818f4b |
children | 374a5ae694e8 57ae42c3ab45 |
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/* Copyright 2013 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #include "68kinst.h" #ifdef NEW_CORE #include "m68k.h" #else #include "m68k_core.h" #endif #include "mem.h" #include <stdio.h> #include <stdlib.h> #include <string.h> int headless = 1; void render_errorbox(char * title, char * buf) { } void render_infobox(char * title, char * buf) { } #ifndef NEW_CORE m68k_context * sync_components(m68k_context * context, uint32_t address) { if (context->current_cycle > 0x80000000) { context->current_cycle -= 0x80000000; } if (context->status & M68K_STATUS_TRACE || context->trace_pending) { context->target_cycle = context->current_cycle; } return context; } #endif m68k_context *reset_handler(m68k_context *context) { m68k_print_regs(context); exit(0); //unreachable return context; } int main(int argc, char ** argv) { long filesize; unsigned short *filebuf; char disbuf[1024]; unsigned short * cur; m68k_options opts; FILE * f = fopen(argv[1], "rb"); fseek(f, 0, SEEK_END); filesize = ftell(f); fseek(f, 0, SEEK_SET); filebuf = malloc(0x400000); memset(filebuf, 0, 0x400000); fread(filebuf, 2, filesize/2 > 0x200000 ? 0x200000 : filesize/2, f); fclose(f); for(cur = filebuf; cur - filebuf < (filesize/2); ++cur) { *cur = (*cur >> 8) | (*cur << 8); } memmap_chunk memmap[2]; memset(memmap, 0, sizeof(memmap_chunk)*2); memmap[0].end = 0x400000; memmap[0].mask = 0xFFFFFF; memmap[0].flags = MMAP_READ; memmap[0].buffer = filebuf; memmap[1].start = 0xE00000; memmap[1].end = 0x1000000; memmap[1].mask = 0xFFFF; memmap[1].flags = MMAP_READ | MMAP_WRITE | MMAP_CODE; memmap[1].buffer = malloc(64 * 1024); memset(memmap[1].buffer, 0, 64 * 1024); init_m68k_opts(&opts, memmap, 2, 1); m68k_context * context = init_68k_context(&opts, reset_handler); context->mem_pointers[0] = memmap[0].buffer; context->mem_pointers[1] = memmap[1].buffer; #ifndef NEW_CORE context->target_cycle = context->sync_cycle = 0x80000000; #endif m68k_reset(context); #ifdef NEW_CORE for (;;) { m68k_execute(context, 0x80000000); context->cycles = 0; } #endif return 0; }