Mercurial > repos > blastem
view trans.c @ 622:b76d2a628ab9
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Tue, 17 Jun 2014 19:01:01 -0700 |
parents | 140af5509ce7 |
children | 8e395210f50f |
line wrap: on
line source
/* 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" #include "m68k_to_x86.h" #include "mem.h" #include <stdio.h> #include <stdlib.h> #include <string.h> m68k_context * sync_components(m68k_context * context, uint32_t address) { if (context->current_cycle > 0x80000000) { context->current_cycle -= 0x80000000; } return context; } int main(int argc, char ** argv) { long filesize; unsigned short *filebuf; char disbuf[1024]; unsigned short * cur; x86_68k_options opts; m68k_context context; FILE * f = fopen(argv[1], "rb"); fseek(f, 0, SEEK_END); filesize = ftell(f); fseek(f, 0, SEEK_SET); filebuf = malloc(filesize > 0x400000 ? filesize : 0x400000); fread(filebuf, 2, 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); init_x86_68k_opts(&opts, memmap, 2); init_68k_context(&context, opts.native_code_map, &opts); context.mem_pointers[0] = memmap[0].buffer; context.mem_pointers[1] = memmap[1].buffer; context.target_cycle = context.sync_cycle = 0x80000000; uint32_t address; address = filebuf[2] << 16 | filebuf[3]; translate_m68k_stream(address, &context); m68k_reset(&context); return 0; }