| 1 | /* HcX floppy Emulator Host Software for TO8 and MO5
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| 2 | * Copyright 2011, Adrien Destugues <pulkomandy@pulkomandy.ath.cx>
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| 3 | * Distributed under the terms of the MIT Licence
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| 4 | */
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| 5 |
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| 6 | #include "pff/pff.h"
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| 7 | #include "macros.h"
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| 8 |
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| 9 | void asm_write();
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| 10 |
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| 11 | FILINFO DIRECTORY_BUFFER[23];
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| 12 |
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| 13 | unsigned char mark[512 + 16] = "HxCFEDA";
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| 14 | unsigned char* secbuf = mark+16;
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| 15 |
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| 16 | const char* HXCSDFECFG = "HXCSDFE.CFG";
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| 17 |
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| 18 | void printhex(unsigned char n)
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| 19 | {
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| 20 | unsigned char a = n >> 4;
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| 21 | a += '0';
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| 22 | if (a > '9')
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| 23 | a += 'A'-10-'0';
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| 24 | mon_putc(a)
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| 25 | a = (n&0xF) + '0';
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| 26 | if (a > '9')
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| 27 | a += 'A'-10-'0';
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| 28 | mon_putc(a)
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| 29 | }
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| 30 |
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| 31 | // Program exit point (required by compiler...)
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| 32 | void __attribute__((noreturn)) exit(int a)
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| 33 | {
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| 34 | for(;;);
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| 35 | }
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| 36 |
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| 37 | // Error exit (required by compiler ...)
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| 38 | void __attribute__((noreturn)) abort()
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| 39 | {
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| 40 | for(;;);
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| 41 | }
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| 42 |
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| 43 | void my_puts(char* s)
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| 44 | {
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| 45 | int j = 0;
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| 46 | while(s[j]) mon_putc(s[j++]);
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| 47 | }
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| 48 |
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| 49 | DIR d;
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| 50 | char path[256] = "";
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| 51 | char* pathend = path;
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| 52 |
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| 53 | void chdir(char* dirname)
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| 54 | {
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| 55 | *(pathend++) = '/';
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| 56 |
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| 57 | do {
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| 58 | *(pathend++) = *(dirname++);
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| 59 | } while(*(dirname) != 0);
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| 60 |
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| 61 | *(pathend) = 0;
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| 62 |
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| 63 | FRESULT r = pf_opendir(&d, path);
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| 64 |
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| 65 | if (r != 0) my_puts("directory error");
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| 66 | }
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| 67 |
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| 68 | void parent(void)
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| 69 | {
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| 70 | while(*(pathend) != '/' && pathend > path) pathend--;
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| 71 |
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| 72 | *(pathend) = 0;
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| 73 | FRESULT r = pf_opendir(&d, path);
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| 74 | if (r != 0) my_puts("directory error");
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| 75 | }
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| 76 |
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| 77 | void ls(FILINFO* fp)
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| 78 | {
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| 79 | for(int i = 23; i > 0; --i) {
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| 80 | FRESULT r = pf_readdir(&d, fp);
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| 81 | if (r != 0) my_puts("File error");
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| 82 | if (*fp->fname == 0) break;
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| 83 |
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| 84 | fp ++;
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| 85 | }
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| 86 | }
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| 87 |
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| 88 | struct opt
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| 89 | {
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| 90 | char* name;
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| 91 | BYTE off;
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| 92 | BYTE type;
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| 93 | };
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| 94 |
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| 95 | static const struct opt options[7] =
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| 96 | {
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| 97 | {"\x1B\x50\x0CHxC floppy emulator setup\r\n"
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| 98 | "UP/DOWN move - +/- change\r\n"
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| 99 | "space save - left quit\r\n\n"
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| 100 | "Step sound ", 16, 0},
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| 101 | {"\r\nGUI sound ", 17, 0},
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| 102 | {"\r\nBacklight delay ", 18, 1},
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| 103 | {"\r\nStandby delay ", 19, 1},
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| 104 | {"\r\nDrive selector ", 20, 0},
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| 105 | {"\r\nLoad last floppy ", 26, 0},
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| 106 | {"\r\nLCD scroll speed ", 28, 1},
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| 107 | };
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| 108 |
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| 109 | #define getcfg(off) *(char*)((int)confbuf+off)
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| 110 | #define putcfg(off, val) *(char*)((int)confbuf+off) = val
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| 111 |
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| 112 | inline static void config()
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| 113 | {
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| 114 | char confbuf[29];
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| 115 | // If it's HXCSDFE.CFG, enter config mode
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| 116 | // Read the config part of the file
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| 117 | WORD byteCount = 29;
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| 118 | FRESULT r = pf_read(confbuf, byteCount, &byteCount);
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| 119 | if (r != 0 || byteCount != 29)
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| 120 | {
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| 121 | my_puts("read error ");
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| 122 | printhex(r);
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| 123 | abort();
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| 124 | }
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| 125 |
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| 126 | BYTE selected;
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| 127 | for(;;) {
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| 128 | for (int j = 0; j < 7; j++)
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| 129 | {
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| 130 | my_puts(options[j].name);
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| 131 | mon_putc(0x1B); // Select back color
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| 132 | mon_putc(selected == j ? 0x54: 0x50) // Blue
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| 133 | if(options[j].type)
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| 134 | printhex(getcfg(options[j].off));
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| 135 | else
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| 136 | my_puts(getcfg(options[j].off) ? "ON":"OFF");
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| 137 | mon_putc(0x1B); // Select back color
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| 138 | mon_putc(0x50); // Select back color
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| 139 | }
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| 140 |
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| 141 | do {
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| 142 | asm(" SWI\n"
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| 143 | " FCB 0x0A\n");
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| 144 | } while(KEY == 0);
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| 145 |
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| 146 | switch(KEY)
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| 147 | {
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| 148 | case 0x08: // UP
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| 149 | // select next file
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| 150 | if (selected != 0) --selected;
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| 151 | // TODO next page ?
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| 152 | break;
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| 153 |
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| 154 | case 0x19: // SPACE
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| 155 | // save configuration
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| 156 | pf_lseek(0);
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| 157 | byteCount = 29;
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| 158 | r = pf_write(confbuf, byteCount, &byteCount);
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| 159 | if (r || byteCount != 29) {
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| 160 | my_puts("can't write cfg");
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| 161 | printhex(r);
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| 162 | abort();
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| 163 | }
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| 164 | r = pf_write(0, 0, &byteCount); // flush sector
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| 165 | if (r) {
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| 166 | my_puts("can't close cfg");
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| 167 | printhex(r);
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| 168 | abort();
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| 169 | }
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| 170 | // fall through
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| 171 | case 0x10: // LEFT
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| 172 | // Quit (without saving)
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| 173 | return;
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| 174 |
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| 175 | case 0x18: // DOWN
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| 176 | // select previous file
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| 177 | if (++selected > 6) selected = 6;
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| 178 | // TODO previous page ?
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| 179 | break;
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| 180 | case 0x13: // -
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| 181 | // decrease current option value
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| 182 | if(options[selected].type)
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| 183 | --*(char*)((int)confbuf+options[selected].off);
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| 184 | else
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| 185 | putcfg(options[selected].off, 0);
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| 186 | break;
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| 187 | case 0x0B: // +
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| 188 | if(options[selected].type)
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| 189 | ++*(char*)((int)confbuf+options[selected].off);
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| 190 | else
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| 191 | putcfg(options[selected].off, 0xFF);
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| 192 | break;
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| 193 | }
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| 194 | }
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| 195 | }
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| 196 |
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| 197 | int __attribute__((noreturn)) main(void)
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| 198 | {
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| 199 | // Detect HxC and print version code
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| 200 | seek();
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| 201 | read(255, 0, secbuf);
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| 202 | my_puts("Firmware ");
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| 203 | my_puts(secbuf + 8);
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| 204 |
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| 205 | // Read FAT / Init card
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| 206 | FATFS fs;
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| 207 | FRESULT r = pf_mount(&fs);
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| 208 |
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| 209 | if (r != 0) {
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| 210 | my_puts("mount error ");
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| 211 | printhex(r);
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| 212 | exit(0);
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| 213 | }
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| 214 |
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| 215 | // Enter "fixed timings" mode - make sure track 255 sends index pulses
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| 216 | // every 200ms. Makes everything a bit slower, but the CD90-640 ROM
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| 217 | // requires it.
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| 218 | int j = 8;
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| 219 | mark[j++] = 3;
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| 220 | mark[j++] = 0xFF;
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| 221 | for(; j <512; j++) mark[j] = 0;
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| 222 | write(255,0,mark);
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| 223 |
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| 224 | // Open root directory
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| 225 | pf_opendir(&d, "");
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| 226 |
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| 227 | // List files
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| 228 | ls(DIRECTORY_BUFFER);
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| 229 |
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| 230 | int selected = 0;
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| 231 | // Main input loop
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| 232 | for(;;) {
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| 233 | // TODO : refresh only the changed items ?
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| 234 | mon_putc(0x1B) // Select back color
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| 235 | mon_putc(0x50) // Black
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| 236 | mon_putc(0x0C) // clear screen
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| 237 |
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| 238 | FILINFO* fp = DIRECTORY_BUFFER;
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| 239 | int i = 0;
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| 240 | while(*fp->fname != 0) {
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| 241 | mon_putc(0x1B); // Select back color
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| 242 | if (i++ == selected)
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| 243 | mon_putc(0x54) // Blue
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| 244 | else
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| 245 | mon_putc(0x50) // Black
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| 246 |
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| 247 | mon_putc(0x1B); // Select front color
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| 248 | if (fp->fattrib & AM_DIR)
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| 249 | mon_putc(0x41) // Red
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| 250 | else
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| 251 | mon_putc(0x47) // white
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| 252 |
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| 253 | my_puts(fp->fname);
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| 254 | mon_putc('\n');
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| 255 | mon_putc('\r');
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| 256 |
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| 257 | fp++;
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| 258 | }
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| 259 | if (selected > i) selected = i;
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| 260 |
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| 261 | // Allow the user to select a file
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| 262 | do {
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| 263 | asm(" SWI \n"
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| 264 | " fcb 0x0A\n");
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| 265 | } while(KEY == 0);
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| 266 |
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| 267 | switch(KEY)
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| 268 | {
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| 269 | case 0x08: // UP
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| 270 | // select next file
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| 271 | if (selected != 0) --selected;
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| 272 | // TODO next page ?
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| 273 | break;
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| 274 |
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| 275 | case 0x10: // LEFT
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| 276 | parent();
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| 277 | ls(DIRECTORY_BUFFER);
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| 278 | break;
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| 279 |
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| 280 | case 0x18: // DOWN
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| 281 | // select previous file
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| 282 | if (selected++ >= i) selected = i-1;
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| 283 | // TODO previous page ?
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| 284 | break;
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| 285 |
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| 286 | case 0x19: // SPACE
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| 287 | fp = DIRECTORY_BUFFER;
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| 288 | fp += selected; // Point on the current direntry
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| 289 |
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| 290 | if(fp->fattrib & AM_DIR)
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| 291 | {
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| 292 | // If it's a dir, enter it
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| 293 | chdir(fp->fname);
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| 294 | selected = 0;
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| 295 | ls(DIRECTORY_BUFFER);
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| 296 | } else {
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| 297 | const char* cmp = HXCSDFECFG;
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| 298 | if (*(long*)(fp->fname) == *(long*)(cmp)
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| 299 | && *(long*)(fp->fname + 4) == *(long*)(cmp+4)
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| 300 | && *(long*)(fp->fname + 8) == *(long*)(cmp+8)
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| 301 | )
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| 302 | {
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| 303 | FRESULT res = pf_open(cmp);
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| 304 | if (res) {
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| 305 | my_puts("Can't open CFG file: ");
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| 306 | printhex(res);
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| 307 | exit(0);
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| 308 | }
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| 309 | config();
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| 310 | } else {
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| 311 | my_puts("LOADING FILE");
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| 312 | // If it's an HFE file, load it in HxCSDFE.CFG, then reboot
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| 313 |
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| 314 | // We need to open the file to get the starting cluster.
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| 315 | // This is a PFF "limitation".
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| 316 | pf_open(fp->fname);
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| 317 | long off = LD_DWORD(&fs.org_clust);
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| 318 |
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| 319 | FRESULT res = pf_open(cmp);
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| 320 | if (res) {
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| 321 | my_puts("Can't open CFG file: ");
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| 322 | printhex(res);
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| 323 | exit(0);
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| 324 | }
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| 325 | pf_lseek(0x200);
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| 326 |
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| 327 | int count = 12;
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| 328 | pf_write(fp->fname, count, &count);
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| 329 | count = 1;
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| 330 | pf_write(&fp->fattrib, count, &count);
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| 331 | count = 4;
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| 332 | pf_write(&off, count, &count);
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| 333 | off = LD_DWORD(&fp->fsize);
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| 334 | pf_write(&off, count, &count);
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| 335 | count = 17;
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| 336 | pf_write(fp->fname, count, &count);
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| 337 | pf_write(0,0,&count);
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| 338 |
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| 339 | // reboot
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| 340 | asm(" SWI\n"
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| 341 | " FCB 0");
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| 342 | }
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| 343 | }
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| 344 | break;
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| 345 |
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| 346 | default:
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| 347 | printhex(KEY);
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| 348 | break;
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| 349 | }
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| 350 | }
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| 351 | }
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