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1 | #include "../PicoInt.h" |
2 | |
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3 | // x: 0x03c - 0x19d |
4 | // y: 0x1fc - 0x2f7 |
5 | // 0x2f8 - 0x3f3 |
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6 | picohw_state PicoPicohw; |
7 | |
8 | static int prev_line_cnt_irq3 = 0, prev_line_cnt_irq5 = 0; |
9 | |
10 | static void PicoLineHookPico(int count) |
11 | { |
12 | |
13 | PicoPicohw.line_counter += count; |
14 | if ((PicoPicohw.line_counter & 0xf) == 0 || count > 10) |
15 | { |
16 | if (PicoPicohw.fifo_bytes > 0) |
17 | PicoPicohw.fifo_bytes--; |
18 | } |
19 | |
20 | #if 0 |
21 | if (PicoPicohw.line_counter - prev_line_cnt_irq3 > 200) { |
22 | prev_line_cnt_irq3 = PicoPicohw.line_counter; |
23 | // just a guess/hack, allows 101 Dalmantians to boot |
24 | elprintf(EL_ANOMALY, "irq3"); |
25 | SekInterrupt(3); |
26 | } |
27 | #endif |
28 | |
29 | #if 0 |
30 | if (PicoPicohw.line_counter - prev_line_cnt_irq5 > 512) { |
31 | prev_line_cnt_irq5 = PicoPicohw.line_counter; |
32 | elprintf(EL_ANOMALY, "irq5"); |
33 | SekInterrupt(5); |
34 | } |
35 | #endif |
36 | } |
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37 | |
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38 | PICO_INTERNAL int PicoInitPico(void) |
39 | { |
40 | elprintf(EL_STATUS, "Pico detected"); |
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41 | PicoLineHook = PicoLineHookPico; |
42 | |
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43 | PicoAHW = PAHW_PICO; |
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44 | memset(&PicoPicohw, 0, sizeof(PicoPicohw)); |
45 | PicoPicohw.pen_pos[0] = 0x03c + 352/2; |
46 | PicoPicohw.pen_pos[1] = 0x200 + 252/2; |
47 | prev_line_cnt_irq3 = 0, prev_line_cnt_irq5 = 0; |
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48 | |
49 | return 0; |
50 | } |
51 | |