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Whitestar: use core DMD for mini DMDs #514

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Merged
vbousquet merged 1 commit into from
Dec 7, 2025
Merged

Whitestar: use core DMD for mini DMDs #514

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11 changes: 6 additions & 5 deletions src/wpc/dedmd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -164,8 +164,9 @@ static void dmd32_vblank(int which) {
assert((base & 0x00FF) == 0x0000); // As the mapping of lowest 8 bits is not implemented (would need complex data copy and does not seem to be used by any game)
assert(crtc6845_rasterized_height_r(0) == 64); // As the implementation requires this to be always true
unsigned int src = /*((base >> 3) & 0x000F) | ((base << 1) & 0x0100) |*/ ((base << 2) & 0x7C00);
core_dmd_submit_frame(core_gameData->lcdLayout, dmdlocals.RAMbankPtr + src, 2); // First frame has been displayed 2/3 of the time (500kHz row clock)
core_dmd_submit_frame(core_gameData->lcdLayout, dmdlocals.RAMbankPtr + (src | 0x0200), 1); // Second frame has been displayed 1/3 of the time (1MHz row clock)
const core_tLCDLayout* layout = core_gameData->lcdLayout->lptr ? core_gameData->lcdLayout->lptr : core_gameData->lcdLayout;
core_dmd_submit_frame(layout, dmdlocals.RAMbankPtr + src, 2); // First frame has been displayed 2/3 of the time (500kHz row clock)
core_dmd_submit_frame(layout, dmdlocals.RAMbankPtr + (src | 0x0200), 1); // Second frame has been displayed 1/3 of the time (1MHz row clock)
if (crtc6845_cursor_address_r(0)) // Guessing that the CURSOR signal is used to generate FIRQ
cpu_set_irq_line(dmdlocals.brdData.cpuNo, M6809_FIRQ_LINE, PULSE_LINE);
}
Expand Down Expand Up @@ -194,7 +195,8 @@ static void dmd32_init(struct sndbrdData *brdData) {
assert(0); // Unsupported board revision

// Init PWM shading
core_dmd_pwm_init(core_gameData->lcdLayout, CORE_DMD_PWM_FILTER_DE_128x32, CORE_DMD_PWM_COMBINER_SUM_2_1, 0);
const core_tLCDLayout* layout = core_gameData->lcdLayout->lptr ? core_gameData->lcdLayout->lptr : core_gameData->lcdLayout;
core_dmd_pwm_init(layout, CORE_DMD_PWM_FILTER_DE_128x32, CORE_DMD_PWM_COMBINER_SUM_2_1, 0);
}

static void dmd32_exit(int boardNo) {
Expand Down Expand Up @@ -227,8 +229,7 @@ PINMAME_VIDEO_UPDATE(dedmd32_update) {
will update after the next DMD event. */
}
#endif
core_dmd_video_update(bitmap, cliprect, layout);
return 0;
return core_dmd_video_update(bitmap, cliprect, layout);
}

/*-----------------------------
Expand Down
40 changes: 19 additions & 21 deletions src/wpc/sam.c
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Original file line number Diff line number Diff line change
Expand Up @@ -994,12 +994,12 @@ static WRITE32_HANDLER(sambank_w)
int bits = 0;
for (int y = 0; y < 7; y++)
bits = (bits << 1) | ((samlocals.wptLEDs[i][y] >> (3 + x)) & 0x01);
coreGlobals.drawSeg[35 * dmd_y + 5 * dmd_x + x] = bits;
coreGlobals.drawSeg[35 * dmd_y + 5 * dmd_x + 4 - x] = bits;
}
}
}
samlocals.prevCol = samlocals.col;
}
samlocals.prevCol = samlocals.col;
}
// Previous implementation using PWM physic outputs (somewhat overkill for LED matrix, but works)
/*for (int row = 0; row < 10; row++) { // 2 rows of 7 LED matrix, each matrix being 7 cols x 5 rows (so 10 rows, 49 cols)
Expand Down Expand Up @@ -1094,28 +1094,26 @@ static WRITE32_HANDLER(sambank_w)
case 0x0010: row = 4; break;
default: assert(FALSE); break;
}
if (row >= 0)
{
samlocals.wofLEDs[row][0] = (samlocals.dmdLatch[4] << 1) | ((samlocals.dmdLatch[3] >> 6) & 0x01);
samlocals.wofLEDs[row][1] = (samlocals.dmdLatch[3] << 2) | ((samlocals.dmdLatch[2] >> 5) & 0x03);
samlocals.wofLEDs[row][2] = (samlocals.dmdLatch[2] << 3) | ((samlocals.dmdLatch[1] >> 4) & 0x07);
samlocals.wofLEDs[row][3] = (samlocals.dmdLatch[1] << 4) | ((samlocals.dmdLatch[0] >> 3) & 0x0F);
samlocals.wofLEDs[row][4] = (samlocals.dmdLatch[0] << 5);
if (samlocals.col == 0x010) { // Last row, submit frame
const core_tLCDLayout* layout = &core_gameData->lcdLayout[1];
// Submit to core DMD handler
core_dmd_submit_frame(layout, &samlocals.wofLEDs[0][0], 1);
// Output mini DMD as LED segments (backward compatibility)
for (int ii = 0; ii < 35; ii++) {
UINT16 bits = 0;
for (int kk = 0; kk < 5; kk++)
bits = (bits << 1) | ((samlocals.wofLEDs[kk][ii / 8] >> (ii & 7)) & 0x01);
coreGlobals.drawSeg[ii] = bits;
}
samlocals.wofLEDs[row][0] = (samlocals.dmdLatch[4] << 1) | ((samlocals.dmdLatch[3] >> 6) & 0x01);
samlocals.wofLEDs[row][1] = (samlocals.dmdLatch[3] << 2) | ((samlocals.dmdLatch[2] >> 5) & 0x03);
samlocals.wofLEDs[row][2] = (samlocals.dmdLatch[2] << 3) | ((samlocals.dmdLatch[1] >> 4) & 0x07);
samlocals.wofLEDs[row][3] = (samlocals.dmdLatch[1] << 4) | ((samlocals.dmdLatch[0] >> 3) & 0x0F);
samlocals.wofLEDs[row][4] = (samlocals.dmdLatch[0] << 5);
if (samlocals.col == 0x010) { // Last row, submit frame
const core_tLCDLayout* layout = &core_gameData->lcdLayout[1];
// Submit to core DMD handler
core_dmd_submit_frame(layout, &samlocals.wofLEDs[0][0], 1);
// Output mini DMD as LED segments (backward compatibility)
for (int ii = 0; ii < 35; ii++) {
UINT16 bits = 0;
const int c = ii / 8, shift = 7 - (ii & 7);
for (int kk = 0; kk < 5; kk++)
bits = (bits << 1) | ((samlocals.wofLEDs[kk][c] >> shift) & 0x01);
coreGlobals.drawSeg[ii] = bits;
}
}
samlocals.prevCol = samlocals.col;
}
samlocals.prevCol = samlocals.col;
}
// Previous implementation using PWM physic outputs (somewhat overkill for LED matrix, but works)
/*int col = blank ? 0 : samlocals.dmdLatch[5];
Expand Down
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