| 1 | #include <stdarg.h> |
| 2 | |
| 3 | #define u8 unsigned char |
| 4 | #define u16 unsigned short |
| 5 | #define u32 unsigned int |
| 6 | |
| 7 | #define noinline __attribute__((noinline)) |
| 8 | |
| 9 | #include "edos.h" |
| 10 | #include "asmtools.h" |
| 11 | |
| 12 | #define GFX_DATA_PORT 0xC00000 |
| 13 | #define GFX_CTRL_PORT 0xC00004 |
| 14 | |
| 15 | #define TILE_MEM_END 0xB000 |
| 16 | |
| 17 | #define FONT_LEN 128 |
| 18 | #define TILE_FONT_BASE (TILE_MEM_END / 32 - FONT_LEN) |
| 19 | |
| 20 | /* note: using ED menu's layout here.. */ |
| 21 | #define WPLAN (TILE_MEM_END + 0x0000) |
| 22 | #define HSCRL (TILE_MEM_END + 0x0800) |
| 23 | #define SLIST (TILE_MEM_END + 0x0C00) |
| 24 | #define APLANE (TILE_MEM_END + 0x1000) |
| 25 | #define BPLANE (TILE_MEM_END + 0x3000) |
| 26 | |
| 27 | #define write16(a, d) \ |
| 28 | *((volatile u16 *) (a)) = (d) |
| 29 | #define write32(a, d) \ |
| 30 | *((volatile u32 *) (a)) = (d) |
| 31 | |
| 32 | #define GFX_WRITE_VRAM_ADDR(adr) \ |
| 33 | (((0x4000 | ((adr) & 0x3FFF)) << 16) | ((adr) >> 14) | 0x00) |
| 34 | #define GFX_WRITE_VSRAM_ADDR(adr) \ |
| 35 | (((0x4000 | ((adr) & 0x3FFF)) << 16) | ((adr) >> 14) | 0x10) |
| 36 | |
| 37 | enum { |
| 38 | VDP_MODE1 = 0x00, |
| 39 | VDP_MODE2 = 0x01, |
| 40 | VDP_BACKDROP = 0x07, |
| 41 | VDP_MODE3 = 0x0b, |
| 42 | VDP_MODE4 = 0x0c, |
| 43 | VDP_AUTOINC = 0x0f, |
| 44 | VDP_SCROLLSZ = 0x10, |
| 45 | }; |
| 46 | |
| 47 | /* cell counts */ |
| 48 | #define LEFT_BORDER 1 /* lame TV */ |
| 49 | #define PLANE_W 64 |
| 50 | #define PLANE_H 32 |
| 51 | #define CSCREEN_H 28 |
| 52 | |
| 53 | static noinline void VDP_drawTextML(const char *str, u16 plane_base, |
| 54 | u16 x, u16 y) |
| 55 | { |
| 56 | const u8 *src = (const u8 *)str; |
| 57 | u16 basetile = 0; |
| 58 | int max_len = 40 - LEFT_BORDER; |
| 59 | int len; |
| 60 | u32 addr; |
| 61 | |
| 62 | x += LEFT_BORDER; |
| 63 | |
| 64 | for (len = 0; str[len] && len < max_len; len++) |
| 65 | ; |
| 66 | if (len > (PLANE_W - x)) |
| 67 | len = PLANE_W - x; |
| 68 | |
| 69 | addr = plane_base + ((x + (PLANE_W * y)) << 1); |
| 70 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(addr)); |
| 71 | |
| 72 | while (len-- > 0) { |
| 73 | write16(GFX_DATA_PORT, |
| 74 | basetile | ((*src++) - 32 + TILE_FONT_BASE)); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | static int printf_ypos; |
| 79 | |
| 80 | static void printf_line(int x, const char *buf) |
| 81 | { |
| 82 | u32 addr; |
| 83 | int i; |
| 84 | |
| 85 | VDP_drawTextML(buf, APLANE, x, printf_ypos++ & (PLANE_H - 1)); |
| 86 | |
| 87 | if (printf_ypos >= CSCREEN_H) { |
| 88 | /* clear next line */ |
| 89 | addr = APLANE; |
| 90 | addr += (PLANE_W * (printf_ypos & (PLANE_H - 1))) << 1; |
| 91 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(addr)); |
| 92 | for (i = 0; i < 40 / 2; i++) |
| 93 | write32(GFX_DATA_PORT, 0); |
| 94 | |
| 95 | /* scroll plane */ |
| 96 | write32(GFX_CTRL_PORT, GFX_WRITE_VSRAM_ADDR(0)); |
| 97 | write16(GFX_DATA_PORT, (printf_ypos - 27) * 8); |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | #define PRINTF_LEN 40 |
| 102 | |
| 103 | static noinline int printf(const char *fmt, ...) |
| 104 | { |
| 105 | static const char hexchars[] = "0123456789abcdef"; |
| 106 | static int printf_xpos; |
| 107 | char c, buf[PRINTF_LEN + 11 + 1]; |
| 108 | const char *s; |
| 109 | va_list ap; |
| 110 | int ival; |
| 111 | u32 uval; |
| 112 | int d = 0; |
| 113 | int i, j; |
| 114 | |
| 115 | va_start(ap, fmt); |
| 116 | for (d = 0; *fmt; ) { |
| 117 | int prefix0 = 0; |
| 118 | int fwidth = 0; |
| 119 | |
| 120 | c = *fmt++; |
| 121 | if (d < PRINTF_LEN) |
| 122 | buf[d] = c; |
| 123 | |
| 124 | if (c != '%') { |
| 125 | if (c == '\n') { |
| 126 | buf[d] = 0; |
| 127 | printf_line(printf_xpos, buf); |
| 128 | d = 0; |
| 129 | printf_xpos = 0; |
| 130 | continue; |
| 131 | } |
| 132 | d++; |
| 133 | continue; |
| 134 | } |
| 135 | if (d >= PRINTF_LEN) |
| 136 | continue; |
| 137 | |
| 138 | if (*fmt == '0') { |
| 139 | prefix0 = 1; |
| 140 | fmt++; |
| 141 | } |
| 142 | |
| 143 | while ('1' <= *fmt && *fmt <= '9') { |
| 144 | fwidth = fwidth * 10 + *fmt - '0'; |
| 145 | fmt++; |
| 146 | } |
| 147 | |
| 148 | switch (*fmt++) { |
| 149 | case '%': |
| 150 | d++; |
| 151 | break; |
| 152 | case 'd': |
| 153 | case 'i': |
| 154 | ival = va_arg(ap, int); |
| 155 | if (ival < 0) { |
| 156 | buf[d++] = '-'; |
| 157 | ival = -ival; |
| 158 | } |
| 159 | for (i = 1000000000; i >= 10; i /= 10) |
| 160 | if (ival >= i) |
| 161 | break; |
| 162 | for (; i >= 10; i /= 10) { |
| 163 | buf[d++] = '0' + ival / i; |
| 164 | ival %= i; |
| 165 | } |
| 166 | buf[d++] = '0' + ival; |
| 167 | break; |
| 168 | case 'x': |
| 169 | uval = va_arg(ap, int); |
| 170 | while (fwidth > 0 && uval < (1 << (fwidth - 1) * 4)) { |
| 171 | buf[d++] = prefix0 ? '0' : ' '; |
| 172 | fwidth--; |
| 173 | } |
| 174 | for (j = 1; j < 8 && uval >= (1 << j * 4); j++) |
| 175 | ; |
| 176 | for (j--; j >= 0; j--) |
| 177 | buf[d++] = hexchars[(uval >> j * 4) & 0x0f]; |
| 178 | break; |
| 179 | case 's': |
| 180 | s = va_arg(ap, char *); |
| 181 | while (*s && d < PRINTF_LEN) |
| 182 | buf[d++] = *s++; |
| 183 | break; |
| 184 | default: |
| 185 | // don't handle, for now |
| 186 | d++; |
| 187 | va_arg(ap, void *); |
| 188 | break; |
| 189 | } |
| 190 | } |
| 191 | buf[d] = 0; |
| 192 | va_end(ap); |
| 193 | |
| 194 | if (d != 0) { |
| 195 | // line without \n |
| 196 | VDP_drawTextML(buf, APLANE, printf_xpos, |
| 197 | printf_ypos & (PLANE_H - 1)); |
| 198 | printf_xpos += d; |
| 199 | } |
| 200 | |
| 201 | return d; // wrong.. |
| 202 | } |
| 203 | |
| 204 | void exception(void) |
| 205 | { |
| 206 | VDP_drawTextML("============", APLANE, 0, 0); |
| 207 | VDP_drawTextML(" exception! ", APLANE, 0, 1); |
| 208 | VDP_drawTextML("============", APLANE, 0, 2); |
| 209 | while (1) |
| 210 | ; |
| 211 | } |
| 212 | |
| 213 | void vbl(void) |
| 214 | { |
| 215 | } |
| 216 | |
| 217 | static int usb_read_while_ready(OsRoutine *ed, |
| 218 | void *buf_, int maxlen) |
| 219 | { |
| 220 | u8 *buf = buf_; |
| 221 | int r = 0; |
| 222 | |
| 223 | while (ed->usbRdReady() && r < maxlen) |
| 224 | buf[r++] = ed->usbReadByte(); |
| 225 | |
| 226 | return r; |
| 227 | } |
| 228 | |
| 229 | /* |
| 230 | * TH = 1 : ?1CBRLDU 3-button pad return value (not read) |
| 231 | * TH = 0 : ?0SA00DU 3-button pad return value |
| 232 | * TH = 1 : ?1CBRLDU 3-button pad return value |
| 233 | * TH = 0 : ?0SA0000 D3-0 are forced to '0' |
| 234 | * TH = 1 : ?1CBMXYZ Extra buttons returned in D3-0 |
| 235 | * TH = 0 : ?0SA1111 D3-0 are forced to '1' |
| 236 | */ |
| 237 | static void test_joy_latency(int *min_out, int *max_out) |
| 238 | { |
| 239 | u8 rbuf[8 * 6]; |
| 240 | int min = 8; |
| 241 | int max = 0; |
| 242 | int i, v, b, e; |
| 243 | |
| 244 | for (i = 0; i < 64; i++) { |
| 245 | read_joy_responses(rbuf); |
| 246 | |
| 247 | for (b = 0; b < 8 * 4; b++) { |
| 248 | v = b & 7; |
| 249 | e = (b & 0x08) ? 0x0c : 0; |
| 250 | if ((rbuf[b] & 0x0c) == e) { |
| 251 | if (v < min) |
| 252 | min = v; |
| 253 | } |
| 254 | else if (v > max) |
| 255 | max = v; |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | /* print out the last test */ |
| 260 | for (b = 0; b < 8 * 5; b++) { |
| 261 | printf(" %02x", rbuf[b]); |
| 262 | if ((b & 7) == 7) |
| 263 | printf("\n"); |
| 264 | } |
| 265 | printf("\n"); |
| 266 | |
| 267 | *min_out = min; |
| 268 | *max_out = max; |
| 269 | } |
| 270 | |
| 271 | static int do_test(OsRoutine *ed, u8 b3) |
| 272 | { |
| 273 | int min = 0, max = 0; |
| 274 | |
| 275 | switch (b3) |
| 276 | { |
| 277 | case 'j': |
| 278 | test_joy_latency(&min, &max); |
| 279 | printf("latency: %d - %d\n\n", min, max); |
| 280 | return 0; |
| 281 | default: |
| 282 | break; |
| 283 | } |
| 284 | |
| 285 | return -1; |
| 286 | } |
| 287 | |
| 288 | int main() |
| 289 | { |
| 290 | OsRoutine *ed; |
| 291 | u8 buf[16]; |
| 292 | int i, d, ret; |
| 293 | |
| 294 | ed = (OsRoutine *) *(u32 *)0x1A0; |
| 295 | ed->memInitDmaCode(); |
| 296 | |
| 297 | ed->VDP_setReg(VDP_MODE1, 0x04); |
| 298 | ed->VDP_setReg(VDP_MODE2, 0x64); |
| 299 | ed->VDP_setReg(VDP_AUTOINC, 2); |
| 300 | ed->VDP_setReg(VDP_SCROLLSZ, 0x01); |
| 301 | |
| 302 | /* clear name tables */ |
| 303 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(APLANE)); |
| 304 | for (i = 0; i < PLANE_W * PLANE_H / 2; i++) |
| 305 | write32(GFX_DATA_PORT, 0); |
| 306 | |
| 307 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(BPLANE)); |
| 308 | for (i = 0; i < PLANE_W * PLANE_H / 2; i++) |
| 309 | write32(GFX_DATA_PORT, 0); |
| 310 | |
| 311 | /* note: relying on ED menu's font setup here.. */ |
| 312 | |
| 313 | for (;;) { |
| 314 | if (!ed->usbRdReady()) { |
| 315 | asm volatile("stop #0x2000"); |
| 316 | continue; |
| 317 | } |
| 318 | |
| 319 | buf[0] = ed->usbReadByte(); |
| 320 | if (buf[0] == ' ') |
| 321 | continue; |
| 322 | if (buf[0] != '*') { |
| 323 | d = 1; |
| 324 | goto bad_input; |
| 325 | } |
| 326 | |
| 327 | /* note: OS uses Twofgsr */ |
| 328 | buf[1] = ed->usbReadByte(); |
| 329 | switch (buf[1]) { |
| 330 | case 'T': |
| 331 | ed->usbWriteByte('k'); |
| 332 | break; |
| 333 | /* custom */ |
| 334 | case 't': |
| 335 | buf[2] = ed->usbReadByte(); |
| 336 | ret = do_test(ed, buf[2]); |
| 337 | if (ret != 0) { |
| 338 | d = 3; |
| 339 | goto bad_input; |
| 340 | } |
| 341 | ed->usbWriteByte('k'); |
| 342 | break; |
| 343 | default: |
| 344 | d = 2; |
| 345 | goto bad_input; |
| 346 | } |
| 347 | |
| 348 | continue; |
| 349 | |
| 350 | bad_input: |
| 351 | ret = usb_read_while_ready(ed, buf + d, sizeof(buf) - d); |
| 352 | buf[d + ret] = 0; |
| 353 | printf("bad cmd: %s\n", buf); |
| 354 | /* consume all remaining data */ |
| 355 | while (ed->usbRdReady()) |
| 356 | usb_read_while_ready(ed, buf, sizeof(buf)); |
| 357 | |
| 358 | ed->usbWriteByte('b'); |
| 359 | } |
| 360 | |
| 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | // vim:ts=4:sw=4:expandtab |