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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" |
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10 | #include "asmtools.h" |
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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 | |
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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 | |
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101 | #define PRINTF_LEN 40 |
102 | |
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103 | static noinline int printf(const char *fmt, ...) |
104 | { |
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105 | static const char hexchars[] = "0123456789abcdef"; |
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106 | static int printf_xpos; |
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107 | char c, buf[PRINTF_LEN + 11 + 1]; |
108 | const char *s; |
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109 | va_list ap; |
110 | int ival; |
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111 | u32 uval; |
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112 | int d = 0; |
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113 | int i, j; |
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114 | |
115 | va_start(ap, fmt); |
116 | for (d = 0; *fmt; ) { |
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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') { |
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126 | buf[d] = 0; |
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127 | printf_line(printf_xpos, buf); |
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128 | d = 0; |
129 | printf_xpos = 0; |
130 | continue; |
131 | } |
132 | d++; |
133 | continue; |
134 | } |
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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 | } |
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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; |
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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; |
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179 | case 's': |
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180 | s = va_arg(ap, char *); |
181 | while (*s && d < PRINTF_LEN) |
182 | buf[d++] = *s++; |
183 | break; |
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184 | default: |
185 | // don't handle, for now |
186 | d++; |
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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 | |
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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 | |
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288 | int main() |
289 | { |
290 | OsRoutine *ed; |
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291 | u8 buf[16]; |
292 | int i, d, ret; |
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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 | |
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313 | for (;;) { |
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314 | if (!ed->usbRdReady()) { |
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315 | asm volatile("stop #0x2000"); |
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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)); |
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357 | |
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358 | ed->usbWriteByte('b'); |
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359 | } |
360 | |
361 | return 0; |
362 | } |
363 | |
364 | // vim:ts=4:sw=4:expandtab |