Mercurial > repos > blastem
annotate trans.c @ 1132:fd3b8ac57aca
Fix rendering of BG color index 0 in Mode 4. Only transparent with respect to sprites and not the backdrop like in Mode 5
author | Michael Pavone <pavone@retrodev.com> |
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date | Sun, 01 Jan 2017 01:16:43 -0800 |
parents | 2ec5e6eaf81d |
children | 208803173ebc |
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467
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1 /* |
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2 Copyright 2013 Michael Pavone |
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3 This file is part of BlastEm. |
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. |
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5 */ |
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6 #include "68kinst.h" |
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7 #include "m68k_core.h" |
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8 #include "mem.h" |
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9 #include <stdio.h> |
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10 #include <stdlib.h> |
440 | 11 #include <string.h> |
12 | |
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13 int headless = 1; |
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14 void render_errorbox(char * title, char * buf) |
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15 { |
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16 } |
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17 |
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18 void render_infobox(char * title, char * buf) |
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19 { |
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20 } |
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21 |
440 | 22 m68k_context * sync_components(m68k_context * context, uint32_t address) |
23 { | |
24 if (context->current_cycle > 0x80000000) { | |
25 context->current_cycle -= 0x80000000; | |
26 } | |
27 return context; | |
28 } | |
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29 |
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30 m68k_context *reset_handler(m68k_context *context) |
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31 { |
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32 m68k_print_regs(context); |
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33 exit(0); |
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34 //unreachable |
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35 return context; |
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36 } |
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37 |
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38 int main(int argc, char ** argv) |
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39 { |
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40 long filesize; |
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41 unsigned short *filebuf; |
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42 char disbuf[1024]; |
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43 unsigned short * cur; |
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44 m68k_options opts; |
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45 FILE * f = fopen(argv[1], "rb"); |
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46 fseek(f, 0, SEEK_END); |
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47 filesize = ftell(f); |
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48 fseek(f, 0, SEEK_SET); |
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49 filebuf = malloc(0x400000); |
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50 memset(filebuf, 0, 0x400000); |
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51 fread(filebuf, 2, filesize/2 > 0x200000 ? 0x200000 : filesize/2, f); |
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52 fclose(f); |
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53 for(cur = filebuf; cur - filebuf < (filesize/2); ++cur) |
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54 { |
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55 *cur = (*cur >> 8) | (*cur << 8); |
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56 } |
440 | 57 memmap_chunk memmap[2]; |
58 memset(memmap, 0, sizeof(memmap_chunk)*2); | |
59 memmap[0].end = 0x400000; | |
60 memmap[0].mask = 0xFFFFFF; | |
61 memmap[0].flags = MMAP_READ; | |
62 memmap[0].buffer = filebuf; | |
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63 |
440 | 64 memmap[1].start = 0xE00000; |
65 memmap[1].end = 0x1000000; | |
66 memmap[1].mask = 0xFFFF; | |
67 memmap[1].flags = MMAP_READ | MMAP_WRITE | MMAP_CODE; | |
68 memmap[1].buffer = malloc(64 * 1024); | |
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69 memset(memmap[1].buffer, 0, 64 * 1024); |
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70 init_m68k_opts(&opts, memmap, 2, 1); |
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71 m68k_context * context = init_68k_context(&opts, reset_handler); |
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72 context->mem_pointers[0] = memmap[0].buffer; |
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73 context->mem_pointers[1] = memmap[1].buffer; |
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74 context->target_cycle = context->sync_cycle = 0x80000000; |
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75 uint32_t address; |
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76 address = filebuf[2] << 16 | filebuf[3]; |
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77 translate_m68k_stream(address, context); |
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78 m68k_reset(context); |
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79 return 0; |
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80 } |
440 | 81 |