megadrive_test2

changeset 8:403367d5df5a
added 8x8 font data
author: John Tsiombikas <nuclear@member.fsf.org>
date: Thu, 22 Jun 2017 07:44:48 +0300
parents: 108ecc582a11
children: 6ecf2f3ff05a
files: src/dbgfont.h src/debug.c src/debug.h src/io.h src/main.c src/vdp.h
diffstat: 6 files changed, 943 insertions(+), 2 deletions(-) [+]
[-]

src/dbgfont.h 868

src/debug.c 17

src/debug.h 6

src/io.h 31

src/main.c 18

src/vdp.h 5 src/dbgfont.h 868 src/debug.c 17 src/debug.h 6 src/io.h 31 src/main.c 18 src/vdp.h 5
src/dbgfont.h 868
src/debug.c 17
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/dbgfont.h	Thu Jun 22 07:44:48 2017 +0300
     1.3 @@ -0,0 +1,868 @@
     1.4 +#ifndef DBGFONT_H_
     1.5 +#define DBGFONT_H_
     1.6 +
     1.7 +#define ROM __attribute__((section(".rodata")))
     1.8 +
     1.9 +#define FONT_FIRST	32
    1.10 +#define FONT_COUNT	(sizeof font / sizeof *font)
    1.11 +
    1.12 +static unsigned long font[][8] ROM = {
    1.13 +	{
    1.14 +		0x00000000,
    1.15 +		0x00000000,
    1.16 +		0x00000000,
    1.17 +		0x00000000,
    1.18 +		0x00000000,
    1.19 +		0x00000000,
    1.20 +		0x00000000,
    1.21 +		0x00000000
    1.22 +	}, {
    1.23 +		0x00ff0000,
    1.24 +		0x0ffff000,
    1.25 +		0x0ffff000,
    1.26 +		0x00ff0000,
    1.27 +		0x00ff0000,
    1.28 +		0x00000000,
    1.29 +		0x00ff0000,
    1.30 +		0x00000000
    1.31 +	}, {
    1.32 +		0x0ff0ff00,
    1.33 +		0x0ff0ff00,
    1.34 +		0x0ff0ff00,
    1.35 +		0x00000000,
    1.36 +		0x00000000,
    1.37 +		0x00000000,
    1.38 +		0x00000000,
    1.39 +		0x00000000
    1.40 +	}, {
    1.41 +		0x0ff0ff00,
    1.42 +		0x0ff0ff00,
    1.43 +		0xfffffff0,
    1.44 +		0x0ff0ff00,
    1.45 +		0xfffffff0,
    1.46 +		0x0ff0ff00,
    1.47 +		0x0ff0ff00,
    1.48 +		0x00000000
    1.49 +	}, {
    1.50 +		0x00ff0000,
    1.51 +		0x0fffff00,
    1.52 +		0xff000000,
    1.53 +		0x0ffff000,
    1.54 +		0x0000ff00,
    1.55 +		0xfffff000,
    1.56 +		0x00ff0000,
    1.57 +		0x00000000
    1.58 +	}, {
    1.59 +		0x00000000,
    1.60 +		0xff000ff0,
    1.61 +		0xff00ff00,
    1.62 +		0x000ff000,
    1.63 +		0x00ff0000,
    1.64 +		0x0ff00ff0,
    1.65 +		0xff000ff0,
    1.66 +		0x00000000
    1.67 +	}, {
    1.68 +		0x00fff000,
    1.69 +		0x0ff0ff00,
    1.70 +		0x00fff000,
    1.71 +		0x0fff0ff0,
    1.72 +		0xff0fff00,
    1.73 +		0xff00ff00,
    1.74 +		0x0fff0ff0,
    1.75 +		0x00000000
    1.76 +	}, {
    1.77 +		0x0ff00000,
    1.78 +		0x0ff00000,
    1.79 +		0xff000000,
    1.80 +		0x00000000,
    1.81 +		0x00000000,
    1.82 +		0x00000000,
    1.83 +		0x00000000,
    1.84 +		0x00000000
    1.85 +	}, {
    1.86 +		0x000ff000,
    1.87 +		0x00ff0000,
    1.88 +		0x0ff00000,
    1.89 +		0x0ff00000,
    1.90 +		0x0ff00000,
    1.91 +		0x00ff0000,
    1.92 +		0x000ff000,
    1.93 +		0x00000000
    1.94 +	}, {
    1.95 +		0x0ff00000,
    1.96 +		0x00ff0000,
    1.97 +		0x000ff000,
    1.98 +		0x000ff000,
    1.99 +		0x000ff000,
   1.100 +		0x00ff0000,
   1.101 +		0x0ff00000,
   1.102 +		0x00000000
   1.103 +	}, {
   1.104 +		0x00000000,
   1.105 +		0x0ff00ff0,
   1.106 +		0x00ffff00,
   1.107 +		0xffffffff,
   1.108 +		0x00ffff00,
   1.109 +		0x0ff00ff0,
   1.110 +		0x00000000,
   1.111 +		0x00000000
   1.112 +	}, {
   1.113 +		0x00000000,
   1.114 +		0x00ff0000,
   1.115 +		0x00ff0000,
   1.116 +		0xffffff00,
   1.117 +		0x00ff0000,
   1.118 +		0x00ff0000,
   1.119 +		0x00000000,
   1.120 +		0x00000000
   1.121 +	}, {
   1.122 +		0x00000000,
   1.123 +		0x00000000,
   1.124 +		0x00000000,
   1.125 +		0x00000000,
   1.126 +		0x00000000,
   1.127 +		0x00ff0000,
   1.128 +		0x00ff0000,
   1.129 +		0x0ff00000
   1.130 +	}, {
   1.131 +		0x00000000,
   1.132 +		0x00000000,
   1.133 +		0x00000000,
   1.134 +		0xffffff00,
   1.135 +		0x00000000,
   1.136 +		0x00000000,
   1.137 +		0x00000000,
   1.138 +		0x00000000
   1.139 +	}, {
   1.140 +		0x00000000,
   1.141 +		0x00000000,
   1.142 +		0x00000000,
   1.143 +		0x00000000,
   1.144 +		0x00000000,
   1.145 +		0x00ff0000,
   1.146 +		0x00ff0000,
   1.147 +		0x00000000
   1.148 +	}, {
   1.149 +		0x00000ff0,
   1.150 +		0x0000ff00,
   1.151 +		0x000ff000,
   1.152 +		0x00ff0000,
   1.153 +		0x0ff00000,
   1.154 +		0xff000000,
   1.155 +		0xf0000000,
   1.156 +		0x00000000
   1.157 +	}, {
   1.158 +		0x0fffff00,
   1.159 +		0xff000ff0,
   1.160 +		0xff00fff0,
   1.161 +		0xff0ffff0,
   1.162 +		0xffff0ff0,
   1.163 +		0xfff00ff0,
   1.164 +		0x0fffff00,
   1.165 +		0x00000000
   1.166 +	}, {
   1.167 +		0x00ff0000,
   1.168 +		0x0fff0000,
   1.169 +		0x00ff0000,
   1.170 +		0x00ff0000,
   1.171 +		0x00ff0000,
   1.172 +		0x00ff0000,
   1.173 +		0xffffff00,
   1.174 +		0x00000000
   1.175 +	}, {
   1.176 +		0x0ffff000,
   1.177 +		0xff00ff00,
   1.178 +		0x0000ff00,
   1.179 +		0x00fff000,
   1.180 +		0x0ff00000,
   1.181 +		0xff000f00,
   1.182 +		0xffffff00,
   1.183 +		0x00000000
   1.184 +	}, {
   1.185 +		0x0ffff000,
   1.186 +		0xff00ff00,
   1.187 +		0x0000ff00,
   1.188 +		0x00fff000,
   1.189 +		0x0000ff00,
   1.190 +		0xff00ff00,
   1.191 +		0x0ffff000,
   1.192 +		0x00000000
   1.193 +	}, {
   1.194 +		0x000fff00,
   1.195 +		0x00ffff00,
   1.196 +		0x0ff0ff00,
   1.197 +		0xff00ff00,
   1.198 +		0xfffffff0,
   1.199 +		0x0000ff00,
   1.200 +		0x000ffff0,
   1.201 +		0x00000000
   1.202 +	}, {
   1.203 +		0xffffff00,
   1.204 +		0xff000000,
   1.205 +		0xfffff000,
   1.206 +		0x0000ff00,
   1.207 +		0x0000ff00,
   1.208 +		0xff00ff00,
   1.209 +		0x0ffff000,
   1.210 +		0x00000000
   1.211 +	}, {
   1.212 +		0x00fff000,
   1.213 +		0x0ff00000,
   1.214 +		0xff000000,
   1.215 +		0xfffff000,
   1.216 +		0xff00ff00,
   1.217 +		0xff00ff00,
   1.218 +		0x0ffff000,
   1.219 +		0x00000000
   1.220 +	}, {
   1.221 +		0xffffff00,
   1.222 +		0xff00ff00,
   1.223 +		0x0000ff00,
   1.224 +		0x000ff000,
   1.225 +		0x00ff0000,
   1.226 +		0x00ff0000,
   1.227 +		0x00ff0000,
   1.228 +		0x00000000
   1.229 +	}, {
   1.230 +		0x0ffff000,
   1.231 +		0xff00ff00,
   1.232 +		0xff00ff00,
   1.233 +		0x0ffff000,
   1.234 +		0xff00ff00,
   1.235 +		0xff00ff00,
   1.236 +		0x0ffff000,
   1.237 +		0x00000000
   1.238 +	}, {
   1.239 +		0x0ffff000,
   1.240 +		0xff00ff00,
   1.241 +		0xff00ff00,
   1.242 +		0x0fffff00,
   1.243 +		0x0000ff00,
   1.244 +		0x000ff000,
   1.245 +		0x0fff0000,
   1.246 +		0x00000000
   1.247 +	}, {
   1.248 +		0x00000000,
   1.249 +		0x00ff0000,
   1.250 +		0x00ff0000,
   1.251 +		0x00000000,
   1.252 +		0x00000000,
   1.253 +		0x00ff0000,
   1.254 +		0x00ff0000,
   1.255 +		0x00000000
   1.256 +	}, {
   1.257 +		0x00000000,
   1.258 +		0x00ff0000,
   1.259 +		0x00ff0000,
   1.260 +		0x00000000,
   1.261 +		0x00ff0000,
   1.262 +		0x00ff0000,
   1.263 +		0x0ff00000,
   1.264 +		0x00000000
   1.265 +	}, {
   1.266 +		0x000ff000,
   1.267 +		0x00ff0000,
   1.268 +		0x0ff00000,
   1.269 +		0xff000000,
   1.270 +		0x0ff00000,
   1.271 +		0x00ff0000,
   1.272 +		0x000ff000,
   1.273 +		0x00000000
   1.274 +	}, {
   1.275 +		0x00000000,
   1.276 +		0x00000000,
   1.277 +		0xffffff00,
   1.278 +		0x00000000,
   1.279 +		0x00000000,
   1.280 +		0xffffff00,
   1.281 +		0x00000000,
   1.282 +		0x00000000
   1.283 +	}, {
   1.284 +		0x0ff00000,
   1.285 +		0x00ff0000,
   1.286 +		0x000ff000,
   1.287 +		0x0000ff00,
   1.288 +		0x000ff000,
   1.289 +		0x00ff0000,
   1.290 +		0x0ff00000,
   1.291 +		0x00000000
   1.292 +	}, {
   1.293 +		0x0ffff000,
   1.294 +		0xff00ff00,
   1.295 +		0x0000ff00,
   1.296 +		0x000ff000,
   1.297 +		0x00ff0000,
   1.298 +		0x00000000,
   1.299 +		0x00ff0000,
   1.300 +		0x00000000
   1.301 +	}, {
   1.302 +		0x0fffff00,
   1.303 +		0xff000ff0,
   1.304 +		0xff0ffff0,
   1.305 +		0xff0ffff0,
   1.306 +		0xff0ffff0,
   1.307 +		0xff000000,
   1.308 +		0x0ffff000,
   1.309 +		0x00000000
   1.310 +	}, {
   1.311 +		0x00ff0000,
   1.312 +		0x0ffff000,
   1.313 +		0xff00ff00,
   1.314 +		0xff00ff00,
   1.315 +		0xffffff00,
   1.316 +		0xff00ff00,
   1.317 +		0xff00ff00,
   1.318 +		0x00000000
   1.319 +	}, {
   1.320 +		0xffffff00,
   1.321 +		0x0ff00ff0,
   1.322 +		0x0ff00ff0,
   1.323 +		0x0fffff00,
   1.324 +		0x0ff00ff0,
   1.325 +		0x0ff00ff0,
   1.326 +		0xffffff00,
   1.327 +		0x00000000
   1.328 +	}, {
   1.329 +		0x00ffff00,
   1.330 +		0x0ff00ff0,
   1.331 +		0xff000000,
   1.332 +		0xff000000,
   1.333 +		0xff000000,
   1.334 +		0x0ff00ff0,
   1.335 +		0x00ffff00,
   1.336 +		0x00000000
   1.337 +	}, {
   1.338 +		0xfffff000,
   1.339 +		0x0ff0ff00,
   1.340 +		0x0ff00ff0,
   1.341 +		0x0ff00ff0,
   1.342 +		0x0ff00ff0,
   1.343 +		0x0ff0ff00,
   1.344 +		0xfffff000,
   1.345 +		0x00000000
   1.346 +	}, {
   1.347 +		0xfffffff0,
   1.348 +		0x0ff000f0,
   1.349 +		0x0ff0f000,
   1.350 +		0x0ffff000,
   1.351 +		0x0ff0f000,
   1.352 +		0x0ff000f0,
   1.353 +		0xfffffff0,
   1.354 +		0x00000000
   1.355 +	}, {
   1.356 +		0xfffffff0,
   1.357 +		0x0ff000f0,
   1.358 +		0x0ff0f000,
   1.359 +		0x0ffff000,
   1.360 +		0x0ff0f000,
   1.361 +		0x0ff00000,
   1.362 +		0xffff0000,
   1.363 +		0x00000000
   1.364 +	}, {
   1.365 +		0x00ffff00,
   1.366 +		0x0ff00ff0,
   1.367 +		0xff000000,
   1.368 +		0xff000000,
   1.369 +		0xff00fff0,
   1.370 +		0x0ff00ff0,
   1.371 +		0x00fffff0,
   1.372 +		0x00000000
   1.373 +	}, {
   1.374 +		0xff00ff00,
   1.375 +		0xff00ff00,
   1.376 +		0xff00ff00,
   1.377 +		0xffffff00,
   1.378 +		0xff00ff00,
   1.379 +		0xff00ff00,
   1.380 +		0xff00ff00,
   1.381 +		0x00000000
   1.382 +	}, {
   1.383 +		0x0ffff000,
   1.384 +		0x00ff0000,
   1.385 +		0x00ff0000,
   1.386 +		0x00ff0000,
   1.387 +		0x00ff0000,
   1.388 +		0x00ff0000,
   1.389 +		0x0ffff000,
   1.390 +		0x00000000
   1.391 +	}, {
   1.392 +		0x000ffff0,
   1.393 +		0x0000ff00,
   1.394 +		0x0000ff00,
   1.395 +		0x0000ff00,
   1.396 +		0xff00ff00,
   1.397 +		0xff00ff00,
   1.398 +		0x0ffff000,
   1.399 +		0x00000000
   1.400 +	}, {
   1.401 +		0xfff00ff0,
   1.402 +		0x0ff00ff0,
   1.403 +		0x0ff0ff00,
   1.404 +		0x0ffff000,
   1.405 +		0x0ff0ff00,
   1.406 +		0x0ff00ff0,
   1.407 +		0xfff00ff0,
   1.408 +		0x00000000
   1.409 +	}, {
   1.410 +		0xffff0000,
   1.411 +		0x0ff00000,
   1.412 +		0x0ff00000,
   1.413 +		0x0ff00000,
   1.414 +		0x0ff000f0,
   1.415 +		0x0ff00ff0,
   1.416 +		0xfffffff0,
   1.417 +		0x00000000
   1.418 +	}, {
   1.419 +		0xff000ff0,
   1.420 +		0xfff0fff0,
   1.421 +		0xfffffff0,
   1.422 +		0xfffffff0,
   1.423 +		0xff0f0ff0,
   1.424 +		0xff000ff0,
   1.425 +		0xff000ff0,
   1.426 +		0x00000000
   1.427 +	}, {
   1.428 +		0xff000ff0,
   1.429 +		0xfff00ff0,
   1.430 +		0xffff0ff0,
   1.431 +		0xff0ffff0,
   1.432 +		0xff00fff0,
   1.433 +		0xff000ff0,
   1.434 +		0xff000ff0,
   1.435 +		0x00000000
   1.436 +	}, {
   1.437 +		0x00fff000,
   1.438 +		0x0ff0ff00,
   1.439 +		0xff000ff0,
   1.440 +		0xff000ff0,
   1.441 +		0xff000ff0,
   1.442 +		0x0ff0ff00,
   1.443 +		0x00fff000,
   1.444 +		0x00000000
   1.445 +	}, {
   1.446 +		0xffffff00,
   1.447 +		0x0ff00ff0,
   1.448 +		0x0ff00ff0,
   1.449 +		0x0fffff00,
   1.450 +		0x0ff00000,
   1.451 +		0x0ff00000,
   1.452 +		0xffff0000,
   1.453 +		0x00000000
   1.454 +	}, {
   1.455 +		0x0ffff000,
   1.456 +		0xff00ff00,
   1.457 +		0xff00ff00,
   1.458 +		0xff00ff00,
   1.459 +		0xff0fff00,
   1.460 +		0x0ffff000,
   1.461 +		0x000fff00,
   1.462 +		0x00000000
   1.463 +	}, {
   1.464 +		0xffffff00,
   1.465 +		0x0ff00ff0,
   1.466 +		0x0ff00ff0,
   1.467 +		0x0fffff00,
   1.468 +		0x0ff0ff00,
   1.469 +		0x0ff00ff0,
   1.470 +		0xfff00ff0,
   1.471 +		0x00000000
   1.472 +	}, {
   1.473 +		0x0ffff000,
   1.474 +		0xff00ff00,
   1.475 +		0xfff00000,
   1.476 +		0x0fff0000,
   1.477 +		0x000fff00,
   1.478 +		0xff00ff00,
   1.479 +		0x0ffff000,
   1.480 +		0x00000000
   1.481 +	}, {
   1.482 +		0xffffff00,
   1.483 +		0xf0ff0f00,
   1.484 +		0x00ff0000,
   1.485 +		0x00ff0000,
   1.486 +		0x00ff0000,
   1.487 +		0x00ff0000,
   1.488 +		0x0ffff000,
   1.489 +		0x00000000
   1.490 +	}, {
   1.491 +		0xff00ff00,
   1.492 +		0xff00ff00,
   1.493 +		0xff00ff00,
   1.494 +		0xff00ff00,
   1.495 +		0xff00ff00,
   1.496 +		0xff00ff00,
   1.497 +		0xffffff00,
   1.498 +		0x00000000
   1.499 +	}, {
   1.500 +		0xff00ff00,
   1.501 +		0xff00ff00,
   1.502 +		0xff00ff00,
   1.503 +		0xff00ff00,
   1.504 +		0xff00ff00,
   1.505 +		0x0ffff000,
   1.506 +		0x00ff0000,
   1.507 +		0x00000000
   1.508 +	}, {
   1.509 +		0xff000ff0,
   1.510 +		0xff000ff0,
   1.511 +		0xff000ff0,
   1.512 +		0xff0f0ff0,
   1.513 +		0xfffffff0,
   1.514 +		0xfff0fff0,
   1.515 +		0xff000ff0,
   1.516 +		0x00000000
   1.517 +	}, {
   1.518 +		0xff000ff0,
   1.519 +		0xff000ff0,
   1.520 +		0x0ff0ff00,
   1.521 +		0x00fff000,
   1.522 +		0x00fff000,
   1.523 +		0x0ff0ff00,
   1.524 +		0xff000ff0,
   1.525 +		0x00000000
   1.526 +	}, {
   1.527 +		0xff00ff00,
   1.528 +		0xff00ff00,
   1.529 +		0xff00ff00,
   1.530 +		0x0ffff000,
   1.531 +		0x00ff0000,
   1.532 +		0x00ff0000,
   1.533 +		0x0ffff000,
   1.534 +		0x00000000
   1.535 +	}, {
   1.536 +		0xfffffff0,
   1.537 +		0xff000ff0,
   1.538 +		0xf000ff00,
   1.539 +		0x000ff000,
   1.540 +		0x00ff00f0,
   1.541 +		0x0ff00ff0,
   1.542 +		0xfffffff0,
   1.543 +		0x00000000
   1.544 +	}, {
   1.545 +		0x0ffff000,
   1.546 +		0x0ff00000,
   1.547 +		0x0ff00000,
   1.548 +		0x0ff00000,
   1.549 +		0x0ff00000,
   1.550 +		0x0ff00000,
   1.551 +		0x0ffff000,
   1.552 +		0x00000000
   1.553 +	}, {
   1.554 +		0xff000000,
   1.555 +		0x0ff00000,
   1.556 +		0x00ff0000,
   1.557 +		0x000ff000,
   1.558 +		0x0000ff00,
   1.559 +		0x00000ff0,
   1.560 +		0x000000f0,
   1.561 +		0x00000000
   1.562 +	}, {
   1.563 +		0x0ffff000,
   1.564 +		0x000ff000,
   1.565 +		0x000ff000,
   1.566 +		0x000ff000,
   1.567 +		0x000ff000,
   1.568 +		0x000ff000,
   1.569 +		0x0ffff000,
   1.570 +		0x00000000
   1.571 +	}, {
   1.572 +		0x000f0000,
   1.573 +		0x00fff000,
   1.574 +		0x0ff0ff00,
   1.575 +		0xff000ff0,
   1.576 +		0x00000000,
   1.577 +		0x00000000,
   1.578 +		0x00000000,
   1.579 +		0x00000000
   1.580 +	}, {
   1.581 +		0x00000000,
   1.582 +		0x00000000,
   1.583 +		0x00000000,
   1.584 +		0x00000000,
   1.585 +		0x00000000,
   1.586 +		0x00000000,
   1.587 +		0x00000000,
   1.588 +		0xffffffff
   1.589 +	}, {
   1.590 +		0x00ff0000,
   1.591 +		0x00ff0000,
   1.592 +		0x000ff000,
   1.593 +		0x00000000,
   1.594 +		0x00000000,
   1.595 +		0x00000000,
   1.596 +		0x00000000,
   1.597 +		0x00000000
   1.598 +	}, {
   1.599 +		0x00000000,
   1.600 +		0x00000000,
   1.601 +		0x0ffff000,
   1.602 +		0x0000ff00,
   1.603 +		0x0fffff00,
   1.604 +		0xff00ff00,
   1.605 +		0x0fff0ff0,
   1.606 +		0x00000000
   1.607 +	}, {
   1.608 +		0xfff00000,
   1.609 +		0x0ff00000,
   1.610 +		0x0ff00000,
   1.611 +		0x0fffff00,
   1.612 +		0x0ff00ff0,
   1.613 +		0x0ff00ff0,
   1.614 +		0xff0fff00,
   1.615 +		0x00000000
   1.616 +	}, {
   1.617 +		0x00000000,
   1.618 +		0x00000000,
   1.619 +		0x0ffff000,
   1.620 +		0xff00ff00,
   1.621 +		0xff000000,
   1.622 +		0xff00ff00,
   1.623 +		0x0ffff000,
   1.624 +		0x00000000
   1.625 +	}, {
   1.626 +		0x000fff00,
   1.627 +		0x0000ff00,
   1.628 +		0x0000ff00,
   1.629 +		0x0fffff00,
   1.630 +		0xff00ff00,
   1.631 +		0xff00ff00,
   1.632 +		0x0fff0ff0,
   1.633 +		0x00000000
   1.634 +	}, {
   1.635 +		0x00000000,
   1.636 +		0x00000000,
   1.637 +		0x0ffff000,
   1.638 +		0xff00ff00,
   1.639 +		0xffffff00,
   1.640 +		0xff000000,
   1.641 +		0x0ffff000,
   1.642 +		0x00000000
   1.643 +	}, {
   1.644 +		0x00fff000,
   1.645 +		0x0ff0ff00,
   1.646 +		0x0ff00000,
   1.647 +		0xffff0000,
   1.648 +		0x0ff00000,
   1.649 +		0x0ff00000,
   1.650 +		0xffff0000,
   1.651 +		0x00000000
   1.652 +	}, {
   1.653 +		0x00000000,
   1.654 +		0x00000000,
   1.655 +		0x0fff0ff0,
   1.656 +		0xff00ff00,
   1.657 +		0xff00ff00,
   1.658 +		0x0fffff00,
   1.659 +		0x0000ff00,
   1.660 +		0xfffff000
   1.661 +	}, {
   1.662 +		0xfff00000,
   1.663 +		0x0ff00000,
   1.664 +		0x0ff0ff00,
   1.665 +		0x0fff0ff0,
   1.666 +		0x0ff00ff0,
   1.667 +		0x0ff00ff0,
   1.668 +		0xfff00ff0,
   1.669 +		0x00000000
   1.670 +	}, {
   1.671 +		0x00ff0000,
   1.672 +		0x00000000,
   1.673 +		0x0fff0000,
   1.674 +		0x00ff0000,
   1.675 +		0x00ff0000,
   1.676 +		0x00ff0000,
   1.677 +		0x0ffff000,
   1.678 +		0x00000000
   1.679 +	}, {
   1.680 +		0x0000ff00,
   1.681 +		0x00000000,
   1.682 +		0x0000ff00,
   1.683 +		0x0000ff00,
   1.684 +		0x0000ff00,
   1.685 +		0xff00ff00,
   1.686 +		0xff00ff00,
   1.687 +		0x0ffff000
   1.688 +	}, {
   1.689 +		0xfff00000,
   1.690 +		0x0ff00000,
   1.691 +		0x0ff00ff0,
   1.692 +		0x0ff0ff00,
   1.693 +		0x0ffff000,
   1.694 +		0x0ff0ff00,
   1.695 +		0xfff00ff0,
   1.696 +		0x00000000
   1.697 +	}, {
   1.698 +		0x0fff0000,
   1.699 +		0x00ff0000,
   1.700 +		0x00ff0000,
   1.701 +		0x00ff0000,
   1.702 +		0x00ff0000,
   1.703 +		0x00ff0000,
   1.704 +		0x0ffff000,
   1.705 +		0x00000000
   1.706 +	}, {
   1.707 +		0x00000000,
   1.708 +		0x00000000,
   1.709 +		0xff00ff00,
   1.710 +		0xfffffff0,
   1.711 +		0xfffffff0,
   1.712 +		0xff0f0ff0,
   1.713 +		0xff000ff0,
   1.714 +		0x00000000
   1.715 +	}, {
   1.716 +		0x00000000,
   1.717 +		0x00000000,
   1.718 +		0xfffff000,
   1.719 +		0xff00ff00,
   1.720 +		0xff00ff00,
   1.721 +		0xff00ff00,
   1.722 +		0xff00ff00,
   1.723 +		0x00000000
   1.724 +	}, {
   1.725 +		0x00000000,
   1.726 +		0x00000000,
   1.727 +		0x0ffff000,
   1.728 +		0xff00ff00,
   1.729 +		0xff00ff00,
   1.730 +		0xff00ff00,
   1.731 +		0x0ffff000,
   1.732 +		0x00000000
   1.733 +	}, {
   1.734 +		0x00000000,
   1.735 +		0x00000000,
   1.736 +		0xff0fff00,
   1.737 +		0x0ff00ff0,
   1.738 +		0x0ff00ff0,
   1.739 +		0x0fffff00,
   1.740 +		0x0ff00000,
   1.741 +		0xffff0000
   1.742 +	}, {
   1.743 +		0x00000000,
   1.744 +		0x00000000,
   1.745 +		0x0fff0ff0,
   1.746 +		0xff00ff00,
   1.747 +		0xff00ff00,
   1.748 +		0x0fffff00,
   1.749 +		0x0000ff00,
   1.750 +		0x000ffff0
   1.751 +	}, {
   1.752 +		0x00000000,
   1.753 +		0x00000000,
   1.754 +		0xff0fff00,
   1.755 +		0x0fff0ff0,
   1.756 +		0x0ff00ff0,
   1.757 +		0x0ff00000,
   1.758 +		0xffff0000,
   1.759 +		0x00000000
   1.760 +	}, {
   1.761 +		0x00000000,
   1.762 +		0x00000000,
   1.763 +		0x0fffff00,
   1.764 +		0xff000000,
   1.765 +		0x0ffff000,
   1.766 +		0x0000ff00,
   1.767 +		0xfffff000,
   1.768 +		0x00000000
   1.769 +	}, {
   1.770 +		0x000f0000,
   1.771 +		0x00ff0000,
   1.772 +		0x0fffff00,
   1.773 +		0x00ff0000,
   1.774 +		0x00ff0000,
   1.775 +		0x00ff0f00,
   1.776 +		0x000ff000,
   1.777 +		0x00000000
   1.778 +	}, {
   1.779 +		0x00000000,
   1.780 +		0x00000000,
   1.781 +		0xff00ff00,
   1.782 +		0xff00ff00,
   1.783 +		0xff00ff00,
   1.784 +		0xff00ff00,
   1.785 +		0x0fff0ff0,
   1.786 +		0x00000000
   1.787 +	}, {
   1.788 +		0x00000000,
   1.789 +		0x00000000,
   1.790 +		0xff00ff00,
   1.791 +		0xff00ff00,
   1.792 +		0xff00ff00,
   1.793 +		0x0ffff000,
   1.794 +		0x00ff0000,
   1.795 +		0x00000000
   1.796 +	}, {
   1.797 +		0x00000000,
   1.798 +		0x00000000,
   1.799 +		0xff000ff0,
   1.800 +		0xff0f0ff0,
   1.801 +		0xfffffff0,
   1.802 +		0xfffffff0,
   1.803 +		0x0ff0ff00,
   1.804 +		0x00000000
   1.805 +	}, {
   1.806 +		0x00000000,
   1.807 +		0x00000000,
   1.808 +		0xff000ff0,
   1.809 +		0x0ff0ff00,
   1.810 +		0x00fff000,
   1.811 +		0x0ff0ff00,
   1.812 +		0xff000ff0,
   1.813 +		0x00000000
   1.814 +	}, {
   1.815 +		0x00000000,
   1.816 +		0x00000000,
   1.817 +		0xff00ff00,
   1.818 +		0xff00ff00,
   1.819 +		0xff00ff00,
   1.820 +		0x0fffff00,
   1.821 +		0x0000ff00,
   1.822 +		0xfffff000
   1.823 +	}, {
   1.824 +		0x00000000,
   1.825 +		0x00000000,
   1.826 +		0xffffff00,
   1.827 +		0xf00ff000,
   1.828 +		0x00ff0000,
   1.829 +		0x0ff00f00,
   1.830 +		0xffffff00,
   1.831 +		0x00000000
   1.832 +	}, {
   1.833 +		0x000fff00,
   1.834 +		0x00ff0000,
   1.835 +		0x00ff0000,
   1.836 +		0xfff00000,
   1.837 +		0x00ff0000,
   1.838 +		0x00ff0000,
   1.839 +		0x000fff00,
   1.840 +		0x00000000
   1.841 +	}, {
   1.842 +		0x000ff000,
   1.843 +		0x000ff000,
   1.844 +		0x000ff000,
   1.845 +		0x00000000,
   1.846 +		0x000ff000,
   1.847 +		0x000ff000,
   1.848 +		0x000ff000,
   1.849 +		0x00000000
   1.850 +	}, {
   1.851 +		0xfff00000,
   1.852 +		0x00ff0000,
   1.853 +		0x00ff0000,
   1.854 +		0x000fff00,
   1.855 +		0x00ff0000,
   1.856 +		0x00ff0000,
   1.857 +		0xfff00000,
   1.858 +		0x00000000
   1.859 +	}, {
   1.860 +		0x0fff0ff0,
   1.861 +		0xf00fff00,
   1.862 +		0x00000000,
   1.863 +		0x00000000,
   1.864 +		0x00000000,
   1.865 +		0x00000000,
   1.866 +		0x00000000,
   1.867 +		0x00000000
   1.868 +	}
   1.869 +};
   1.870 +
   1.871 +#endif	/* DBGFONT_H_ */

     2.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     2.2 +++ b/src/debug.c	Thu Jun 22 07:44:48 2017 +0300
     2.3 @@ -0,0 +1,17 @@
     2.4 +#include "debug.h"
     2.5 +#include "dbgfont.h"
     2.6 +
     2.7 +static int init_done;
     2.8 +
     2.9 +static void init_font(void)
    2.10 +{
    2.11 +	/* TODO allocate tiles, prepare palette etc */
    2.12 +}
    2.13 +
    2.14 +void dbg_print(const char *s)
    2.15 +{
    2.16 +	if(!init_done) {
    2.17 +		init_font();
    2.18 +		init_done = 1;
    2.19 +	}
    2.20 +}

     3.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     3.2 +++ b/src/debug.h	Thu Jun 22 07:44:48 2017 +0300
     3.3 @@ -0,0 +1,6 @@
     3.4 +#ifndef MD_DEBUG_H_
     3.5 +#define MD_DEBUG_H_
     3.6 +
     3.7 +void dbg_print(const char *s);
     3.8 +
     3.9 +#endif	/* MD_DEBUG_H_ */

     4.1 --- a/src/io.h	Wed Jun 21 06:49:50 2017 +0300
     4.2 +++ b/src/io.h	Thu Jun 22 07:44:48 2017 +0300
     4.3 @@ -22,6 +22,9 @@
     4.4  #define IO_REG_LOCK		*((volatile uint8_t*)0xa14000)
     4.5  #define IO_REG_TMSS		*((volatile uint8_t*)0xa14101)
     4.6  
     4.7 +#define IO_REG_DATA(x)	*((volatile uint8_t*)0xa10003 + ((x) << 1))
     4.8 +#define IO_REG_CTRL(x)	*((volatile uint8_t*)0xa10009 + ((x) << 1))
     4.9 +
    4.10  
    4.11  enum {
    4.12  	IO_VER_VERSION_MASK = 0x0f,
    4.13 @@ -30,4 +33,32 @@
    4.14  	IO_VER_NONJP	= 0x80
    4.15  };
    4.16  
    4.17 +enum {
    4.18 +	IO_PAD_UP		= 1,
    4.19 +	IO_PAD_DOWN		= 2,
    4.20 +	IO_PAD_LEFT		= 4,
    4.21 +	IO_PAD_RIGHT	= 8,
    4.22 +	IO_PAD_B		= 16,
    4.23 +	IO_PAD_C		= 32,
    4.24 +	IO_PAD_A		= 64,
    4.25 +	IO_PAD_START	= 128
    4.26 +};
    4.27 +
    4.28 +static inline void io_setdir(int port, uint8_t dir)
    4.29 +{
    4.30 +	IO_REG_CTRL(port) = dir;
    4.31 +}
    4.32 +
    4.33 +static inline uint16_t io_readpad(int port)
    4.34 +{
    4.35 +	uint16_t bnstate;
    4.36 +
    4.37 +	io_setdir(port, 0x40);		/* pin 6 (multiplexer) output, 0-5 inputs */
    4.38 +	IO_REG_DATA(port) = 0x40;	/* select mode 1 */
    4.39 +	bnstate = IO_REG_DATA(port);
    4.40 +	IO_REG_DATA(port) = 0;		/* select mode 0 */
    4.41 +	bnstate |= (IO_REG_DATA(port) << 2) & (IO_PAD_A | IO_PAD_START);
    4.42 +	return bnstate;
    4.43 +}
    4.44 +
    4.45  #endif	/* MEGADRIVE_IO_H_ */

     5.1 --- a/src/main.c	Wed Jun 21 06:49:50 2017 +0300
     5.2 +++ b/src/main.c	Thu Jun 22 07:44:48 2017 +0300
     5.3 @@ -25,6 +25,8 @@
     5.4  	VDP_PACK_RGB(7, 0, 3)		/* 15: fixed */
     5.5  };
     5.6  
     5.7 +static int running = 1;
     5.8 +
     5.9  
    5.10  int main(void)
    5.11  {
    5.12 @@ -58,7 +60,15 @@
    5.13  	//vdp_enable_hintr(12);
    5.14  	vdp_enable_vintr();
    5.15  
    5.16 -	for(;;);
    5.17 +	for(;;) {
    5.18 +		uint16_t bnstate = io_readpad(0);
    5.19 +
    5.20 +		if(bnstate & IO_PAD_START) {
    5.21 +			running = !running;
    5.22 +		}
    5.23 +
    5.24 +		vdp_wait_vblank();
    5.25 +	}
    5.26  
    5.27  	return 0;
    5.28  }
    5.29 @@ -89,7 +99,11 @@
    5.30  void vblank_handler(void)
    5.31  {
    5.32  	int idx = CYCLE_BEG;
    5.33 -	uint16_t first = pal[idx];
    5.34 +	uint16_t first;
    5.35 +
    5.36 +	if(!running) return;
    5.37 +
    5.38 +	first = pal[idx];
    5.39  
    5.40  	vdp_begin_palette(0, idx);
    5.41  	while(idx < CYCLE_END) {

     6.1 --- a/src/vdp.h	Wed Jun 21 06:49:50 2017 +0300
     6.2 +++ b/src/vdp.h	Thu Jun 22 07:44:48 2017 +0300
     6.3 @@ -247,6 +247,11 @@
     6.4  	vdp_setreg(VDP_REG_SCROLL_TAB, addr >> 10);
     6.5  }
     6.6  
     6.7 +static inline void vdp_wait_vblank(void)
     6.8 +{
     6.9 +	while(!(VDP_PORT_STATUS & 0x0008));
    6.10 +}
    6.11 +
    6.12  void vdp_init(void);
    6.13  
    6.14  #endif	/* VDP_H_ */