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1 | /* |
2 | * This software is released into the public domain. |
3 | * See UNLICENSE file in top level directory. |
4 | */ |
5 | #include <stdlib.h> |
6 | #include <stdarg.h> |
7 | |
8 | #define u8 unsigned char |
9 | #define u16 unsigned short |
10 | #define u32 unsigned int |
11 | |
12 | #include "edos.h" |
13 | |
14 | #define GFX_DATA_PORT 0xC00000 |
15 | #define GFX_CTRL_PORT 0xC00004 |
16 | |
17 | #define TILE_MEM_END 0xB000 |
18 | |
19 | #define FONT_LEN 128 |
20 | #define TILE_FONT_BASE (TILE_MEM_END / 32 - FONT_LEN) |
21 | |
22 | /* note: using ED menu's layout here.. */ |
23 | #define WPLANE (TILE_MEM_END + 0x0000) |
24 | #define HSCRL (TILE_MEM_END + 0x0800) |
25 | #define SLIST (TILE_MEM_END + 0x0C00) |
26 | #define APLANE (TILE_MEM_END + 0x1000) |
27 | #define BPLANE (TILE_MEM_END + 0x3000) |
28 | |
29 | #define read8(a) \ |
30 | *((volatile u8 *) (a)) |
31 | #define read16(a) \ |
32 | *((volatile u16 *) (a)) |
33 | #define read32(a) \ |
34 | *((volatile u32 *) (a)) |
35 | #define write16(a, d) \ |
36 | *((volatile u16 *) (a)) = (d) |
37 | #define write32(a, d) \ |
38 | *((volatile u32 *) (a)) = (d) |
39 | |
40 | #define GFX_WRITE_VRAM_ADDR(adr) \ |
41 | (((0x4000 | ((adr) & 0x3FFF)) << 16) | ((adr) >> 14) | 0x00) |
42 | #define GFX_WRITE_VSRAM_ADDR(adr) \ |
43 | (((0x4000 | ((adr) & 0x3FFF)) << 16) | ((adr) >> 14) | 0x10) |
44 | |
45 | enum { |
46 | VDP_MODE1 = 0x00, |
47 | VDP_MODE2 = 0x01, |
48 | VDP_BACKDROP = 0x07, |
49 | VDP_MODE3 = 0x0b, |
50 | VDP_MODE4 = 0x0c, |
51 | VDP_AUTOINC = 0x0f, |
52 | VDP_SCROLLSZ = 0x10, |
53 | }; |
54 | |
55 | /* cell counts */ |
56 | #define LEFT_BORDER 1 /* lame TV */ |
57 | #define PLANE_W 64 |
58 | #define PLANE_H 32 |
59 | #define CSCREEN_H 28 |
60 | |
61 | static void VDP_drawTextML(const char *str, u16 plane_base, |
62 | u16 x, u16 y) |
63 | { |
64 | const u8 *src = (const u8 *)str; |
65 | u16 basetile = 0; |
66 | int max_len = 40 - LEFT_BORDER; |
67 | int len; |
68 | u32 addr; |
69 | |
70 | x += LEFT_BORDER; |
71 | |
72 | for (len = 0; str[len] && len < max_len; len++) |
73 | ; |
74 | if (len > (PLANE_W - x)) |
75 | len = PLANE_W - x; |
76 | |
77 | addr = plane_base + ((x + (PLANE_W * y)) << 1); |
78 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(addr)); |
79 | |
80 | while (len-- > 0) { |
81 | write16(GFX_DATA_PORT, |
3ee911dc |
82 | basetile | ((*src++) - 32 + TILE_FONT_BASE / 32)); |
d2bfad8a |
83 | } |
84 | } |
85 | |
86 | static int printf_ypos; |
87 | |
88 | static void printf_line(int x, const char *buf) |
89 | { |
90 | u32 addr; |
91 | int i; |
92 | |
93 | VDP_drawTextML(buf, APLANE, x, printf_ypos++ & (PLANE_H - 1)); |
94 | |
95 | if (printf_ypos >= CSCREEN_H) { |
96 | /* clear next line */ |
97 | addr = APLANE; |
98 | addr += (PLANE_W * (printf_ypos & (PLANE_H - 1))) << 1; |
99 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(addr)); |
100 | for (i = 0; i < 40 / 2; i++) |
101 | write32(GFX_DATA_PORT, 0); |
102 | |
103 | /* scroll plane */ |
104 | write32(GFX_CTRL_PORT, GFX_WRITE_VSRAM_ADDR(0)); |
105 | write16(GFX_DATA_PORT, (printf_ypos - CSCREEN_H + 1) * 8); |
106 | } |
107 | } |
108 | |
109 | #define PRINTF_LEN 40 |
110 | |
111 | static int printf(const char *fmt, ...) |
112 | { |
113 | static const char hexchars[] = "0123456789abcdef"; |
114 | static int printf_xpos; |
115 | char c, buf[PRINTF_LEN + 11 + 1]; |
116 | const char *s; |
117 | va_list ap; |
118 | int ival; |
119 | u32 uval; |
120 | int d = 0; |
121 | int i, j; |
122 | |
123 | va_start(ap, fmt); |
124 | for (d = 0; *fmt; ) { |
125 | int prefix0 = 0; |
126 | int fwidth = 0; |
127 | |
128 | c = *fmt++; |
129 | if (d < PRINTF_LEN) |
130 | buf[d] = c; |
131 | |
132 | if (c != '%') { |
133 | if (c == '\n') { |
134 | buf[d] = 0; |
135 | printf_line(printf_xpos, buf); |
136 | d = 0; |
137 | printf_xpos = 0; |
138 | continue; |
139 | } |
140 | d++; |
141 | continue; |
142 | } |
143 | if (d >= PRINTF_LEN) |
144 | continue; |
145 | |
146 | if (*fmt == '0') { |
147 | prefix0 = 1; |
148 | fmt++; |
149 | } |
150 | |
151 | while ('1' <= *fmt && *fmt <= '9') { |
152 | fwidth = fwidth * 10 + *fmt - '0'; |
153 | fmt++; |
154 | } |
155 | |
156 | switch (*fmt++) { |
157 | case '%': |
158 | d++; |
159 | break; |
160 | case 'd': |
161 | case 'i': |
162 | ival = va_arg(ap, int); |
163 | if (ival < 0) { |
164 | buf[d++] = '-'; |
165 | ival = -ival; |
166 | } |
167 | for (i = 1000000000; i >= 10; i /= 10) |
168 | if (ival >= i) |
169 | break; |
170 | for (; i >= 10; i /= 10) { |
171 | buf[d++] = '0' + ival / i; |
172 | ival %= i; |
173 | } |
174 | buf[d++] = '0' + ival; |
175 | break; |
176 | case 'x': |
177 | uval = va_arg(ap, int); |
178 | while (fwidth > 1 && uval < (1 << (fwidth - 1) * 4)) { |
179 | buf[d++] = prefix0 ? '0' : ' '; |
180 | fwidth--; |
181 | } |
182 | for (j = 1; j < 8 && uval >= (1 << j * 4); j++) |
183 | ; |
184 | for (j--; j >= 0; j--) |
185 | buf[d++] = hexchars[(uval >> j * 4) & 0x0f]; |
186 | break; |
187 | case 's': |
188 | s = va_arg(ap, char *); |
189 | while (*s && d < PRINTF_LEN) |
190 | buf[d++] = *s++; |
191 | break; |
192 | default: |
193 | // don't handle, for now |
194 | d++; |
195 | va_arg(ap, void *); |
196 | break; |
197 | } |
198 | } |
199 | buf[d] = 0; |
200 | va_end(ap); |
201 | |
202 | if (d != 0) { |
203 | // line without \n |
204 | VDP_drawTextML(buf, APLANE, printf_xpos, |
205 | printf_ypos & (PLANE_H - 1)); |
206 | printf_xpos += d; |
207 | } |
208 | |
209 | return d; // wrong.. |
210 | } |
211 | |
212 | int main() |
213 | { |
214 | OsRoutine *ed; |
215 | u8 seed, bad = 0; |
216 | u8 *p, val; |
217 | int i, t, len; |
218 | |
219 | ed = (OsRoutine *) *(u32 *)0x1A0; |
220 | ed->memInitDmaCode(); |
221 | |
222 | ed->VDP_setReg(VDP_MODE1, 0x04); |
223 | ed->VDP_setReg(VDP_MODE2, 0x64); |
224 | ed->VDP_setReg(VDP_AUTOINC, 2); |
225 | ed->VDP_setReg(VDP_SCROLLSZ, 0x01); |
226 | |
227 | /* clear name tables */ |
228 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(APLANE)); |
229 | for (i = 0; i < PLANE_W * PLANE_H / 2; i++) |
230 | write32(GFX_DATA_PORT, 0); |
231 | |
232 | write32(GFX_CTRL_PORT, GFX_WRITE_VRAM_ADDR(BPLANE)); |
233 | for (i = 0; i < PLANE_W * PLANE_H / 2; i++) |
234 | write32(GFX_DATA_PORT, 0); |
235 | |
236 | /* scroll planes */ |
237 | write32(GFX_CTRL_PORT, GFX_WRITE_VSRAM_ADDR(0)); |
238 | write32(GFX_DATA_PORT, 0); |
239 | |
240 | /* note: relying on ED menu's font setup here.. */ |
241 | |
242 | printf("\n"); |
243 | printf("MD version: %02x\n", read8(0xa10001)); |
244 | printf("ED os/fw: %d/%d\n\n", ed->osGetOsVersion(), |
245 | ed->osGetFirmVersion()); |
246 | |
247 | seed = read8(0xC00009); |
248 | p = (void *)0x200000; |
249 | len = 0x200000; |
250 | printf("filling SDRAM, seed=%02x.. ", seed); |
251 | |
252 | val = seed; |
253 | for (i = 0; i < len; i++) |
254 | p[i] = val++; |
255 | |
256 | printf("done.\n"); |
257 | |
258 | for (t = 1; ; t++) { |
259 | printf("executing stop.. "); |
260 | for (i = 0; i < 5 * 60; i++) |
261 | asm volatile("stop #0x2000"); |
262 | printf("done\n"); |
263 | |
264 | printf("checking memory..\n"); |
265 | |
266 | val = seed; |
267 | for (i = 0; i < len; i++) { |
268 | if (p[i] != val) { |
269 | printf("bad: %06x: got %02x, expected %02x\n", |
270 | &p[i], p[i], val); |
271 | bad = 1; |
272 | } |
273 | val++; |
274 | } |
275 | |
276 | printf("done. Try %d: test ", t); |
277 | if (bad) { |
278 | printf("FAILED\n"); |
279 | break; |
280 | } |
281 | printf("PASSED\n"); |
282 | } |
283 | |
284 | /* there are not enough STOP opcodes in this world :D */ |
285 | while (1) |
286 | asm volatile("stop #0x2000"); |
287 | |
288 | return 0; |
289 | } |
290 | |
291 | // vim:ts=4:sw=4:expandtab |