We definitely only know Speedy writes this address and it goes to open bus on hardware.

2018-05-30 16:50:59 -05:00 · 2018-05-30 16:50:59 -05:00 · 6f5295225c
commit 6f5295225c
parent 53e76473ca
2 changed files with 2 additions and 1 deletions
--- a/dma.cpp
+++ b/dma.cpp
@ -1642,7 +1642,6 @@ uint8 S9xDoHDMA (uint8 byte)
 									S9xSetPPU(*(HDMAMemPointers[d] + 0), 0x2100 + p->BAddress);
 									ADD_CYCLES(SLOW_ONE_CYCLE);
 									S9xSetPPU(*(HDMAMemPointers[d] + 1), 0x2101 + p->BAddress);
-									OpenBus = *(HDMAMemPointers[d] + 1);
 									ADD_CYCLES(SLOW_ONE_CYCLE);
 									HDMAMemPointers[d] += 2;
 									break;
--- a/ppu.cpp
+++ b/ppu.cpp
@ -964,6 +964,8 @@ void S9xSetPPU (uint8 Byte, uint16 Address)
 				#endif
 				}

+				OpenBus = Byte;
+
 				break;

 			case 0x212e: // TMW