Mercurial > repos > blastem
annotate blastcpm.c @ 922:913a6336ce20
Shift slot number to slot behavior mapping by six slots in H40 mode. This makes the line change slot align with the point at which the display turns on and off at the end of the active display area. Also fixed a regression in which an external slot got accidentally changed into a sprite draw slot
author | Michael Pavone <pavone@retrodev.com> |
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date | Thu, 28 Jan 2016 09:10:14 -0800 |
parents | cf6149b7c6e5 |
children | fe8c79f82c22 |
rev | line source |
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820
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1 #include <stdio.h> |
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2 #include <stdlib.h> |
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3 #include <stddef.h> |
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4 #include <string.h> |
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5 #include <sys/select.h> |
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6 |
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7 #include "z80_to_x86.h" |
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8 #include "util.h" |
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9 |
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10 uint8_t ram[64 * 1024]; |
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11 |
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12 #define START_OFF 0x100 |
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13 #define OS_START 0xE400 |
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14 #define OS_RESET 0xE403 |
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15 int headless = 1; |
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16 |
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17 void z80_next_int_pulse(z80_context * context) |
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18 { |
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19 context->int_pulse_start = context->int_pulse_end = CYCLE_NEVER; |
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20 } |
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21 |
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22 void render_errorbox(char *title, char *message) |
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23 { |
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24 } |
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25 |
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26 void render_infobox(char *title, char *message) |
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27 { |
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28 } |
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29 |
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30 void *console_write(uint32_t address, void *context, uint8_t value) |
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31 { |
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32 putchar(value); |
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33 return context; |
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34 } |
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35 |
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36 uint8_t console_read(uint32_t address, void *context) |
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37 { |
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38 return getchar(); |
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39 } |
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40 |
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41 void *console_flush_write(uint32_t address, void *context, uint8_t value) |
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42 { |
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43 fflush(stdout); |
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44 return context; |
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45 } |
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46 |
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47 uint8_t console_status_read(uint32_t address, void *context) |
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48 { |
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49 fd_set read_fds; |
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50 FD_ZERO(&read_fds); |
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51 struct timeval timeout; |
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52 timeout.tv_sec = 0; |
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53 timeout.tv_usec = 0; |
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54 FD_SET(fileno(stdin), &read_fds); |
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55 return select(fileno(stdin)+1, &read_fds, NULL, NULL, &timeout) > 0; |
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56 } |
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57 |
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58 void *exit_write(uint32_t address, void *context, uint8_t value) |
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59 { |
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60 exit(0); |
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61 return context; |
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62 } |
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63 |
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64 const memmap_chunk z80_map[] = { |
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65 { 0x0000, 0x10000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram, NULL, NULL, NULL, NULL}, |
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66 }; |
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67 |
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68 const memmap_chunk io_map[] = { |
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69 { 0x0, 0x1, 0xFFFF, 0, 0, NULL, NULL, NULL, console_read, console_write}, |
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70 { 0x1, 0x2, 0xFFFF, 0, 0, NULL, NULL, NULL, console_status_read, console_flush_write}, |
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71 { 0x2, 0x3, 0xFFFF, 0, 0, NULL, NULL, NULL, NULL, exit_write}, |
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72 }; |
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73 |
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74 int main(int argc, char **argv) |
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75 { |
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76 FILE *f = fopen("fake_cpm.bin", "rb"); |
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77 long fsize = file_size(f); |
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78 if (fsize > sizeof(ram) - OS_START) { |
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79 fsize = sizeof(ram) - OS_START; |
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80 } |
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81 if (fread(ram + OS_START, 1, fsize, f) != fsize) { |
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82 fprintf(stderr, "Error reading from fake_cpm.bin\n"); |
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83 exit(1); |
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84 } |
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85 f = fopen(argv[1], "rb"); |
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86 fsize = file_size(f); |
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87 if (fsize > OS_START - START_OFF) { |
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88 fsize = OS_START - START_OFF; |
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89 } |
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90 if (fread(ram + START_OFF, 1, fsize, f) != fsize) { |
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91 fprintf(stderr, "Error reading from file %s\n", argv[1]); |
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92 exit(1); |
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93 } |
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94 fclose(f); |
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95 ram[0] = 0xC3; |
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96 ram[1] = OS_RESET & 0xFF; |
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97 ram[2] = OS_RESET >> 8; |
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98 ram[5] = 0xC3; |
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99 ram[6] = OS_START & 0xFF; |
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100 ram[7] = OS_START >> 8; |
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101 |
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102 z80_options opts; |
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103 z80_context context; |
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104 init_z80_opts(&opts, z80_map, 1, io_map, 3, 1); |
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105 init_z80_context(&context, &opts); |
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106 for(;;) |
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107 { |
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108 z80_run(&context, 1000000); |
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109 context.current_cycle = 0; |
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110 } |
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111 return 0; |
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112 } |