Fixed tile off by one and some timing issues

davecom · Jul 19, 2018 · 53db1fab2d4489ecab18ac988ae6d2d06dbcc944 · 53db1fa
1 parent 96ad1fc
commit 53db1fab2d4489ecab18ac988ae6d2d06dbcc944
Unified Split

Showing with 1 addition and 1 deletion.

+1 −1 Sources/DDPPU.c
diff --git a/Sources/DDPPU.c b/Sources/DDPPU.c
@@ -92,7 +92,7 @@ inline void ppu_step() {
             byte color = ((tile_data >> 32) >> ((7 - X) * 4)) & 0x0F;
             draw_pixel(cycle, scanline, color);
         }
-        if (scanline < 240 && (cycle < 256 || (cycle >= 321 && cycle <= 336))) {
+        if ((scanline < 240 || scanline == 261) && ((cycle > 0 && cycle < 256) || (cycle >= 321 && cycle <= 336))) {
 
             // prepare for next render
             tile_data <<= 4;