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Detecting VDP type

by santiontanon on 05-08-2019, 12:21
Score: 131.86 %, Type: Forum topic , Comments: 32 comments
rather than an emulator. The simplest test I can imagine is to set register 15 to 0. If the registers ... Writing 0 to register 15 ( out (99h),0 out (99h),8Fh ) sets the value 0 to register 7 on Texas Instruments VDPs. It only considers bits 0-2 of the register number. I have observed this myself, ...

Konami Gradius saga not synced by VBLANK

by DarkSchneider on 05-08-2019, 11:17
Score: 131.74 %, Type: Forum topic , Comments: 1 comment
Testing some games with the Turbo option, I noticed that Konami's Gradius saga runs too fast. Seems like they "synced" the games adding NOPs for the Z80A and go straight. Tested some other Konami games like Galious or Usas and they run ...
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