Search found 88 matches

by tomaitheous
Fri Jun 19, 2009 6:33 pm
Forum: PC-Engine
Topic: VRAM Transfer Speed (and scd ram under HuC)
Replies: 12
Views: 4206

Re: VRAM Transfer Speed (and scd ram under HuC)

well, after understanding the macros in macro.inc of mkit I did find coding a little easier for 16bits operation for example now, the cool thing about HuC is that, integrating asm inside is damn easy, so, making the structure in C, and the things that need to be fast in asm can do the trick and I t...
by tomaitheous
Fri Jun 19, 2009 4:55 pm
Forum: PC-Engine
Topic: VRAM Transfer Speed (and scd ram under HuC)
Replies: 12
Views: 4206

Re: VRAM Transfer Speed (and scd ram under HuC)

Hey - you could try out this . Later SCD games started using their own libs to speed up CD read functions. It bypasses the system card and directly access the CD base ports/hardware. I ripped that from Seiya Monogatari. Just map the bank to MPR #2 and call the CD_VDC_DMA. It'll read and copy directl...
by tomaitheous
Fri Jun 19, 2009 2:29 pm
Forum: PC-Engine
Topic: VRAM Transfer Speed (and scd ram under HuC)
Replies: 12
Views: 4206

Re: VRAM Transfer Speed (and scd ram under HuC)

Wow, those are some awesome pic conversions :)

Curious though, since you seem pretty comfortable with ASM (and self modifying code), why use HuC?
by tomaitheous
Mon Jun 15, 2009 11:51 pm
Forum: PC-Engine
Topic: VRAM Transfer Speed (and scd ram under HuC)
Replies: 12
Views: 4206

Re: VRAM Transfer Speed (and scd ram under HuC)

1) *Any* pointer or array access with HuC is *dead* slow. REALLY slow. It treats near data of scratchpad ram or constant bank as far data :x 2) Yeah, that *code* limit of 8k is lame. It originates from PCEAS, so it extends to HuC. VDC DMA doesn't touch the CPU address range. Only VRAM. So VRAM to VR...
by tomaitheous
Fri May 29, 2009 1:10 am
Forum: PC-Engine
Topic: PSG soud effect
Replies: 4
Views: 1739

Re: PSG soud effect

It's a pain in the ass but you can; open a HES file with mednafen, set a break point at $fff8 (vblank interrupt), then set break points for $800-809. Make sure your on the effect #1 first before setting those break points. The reason you set a break point for $FFF8 (might want to step into this code...
by tomaitheous
Tue May 26, 2009 5:03 am
Forum: PC-Engine
Topic: PSG soud effect
Replies: 4
Views: 1739

Re: PSG soud effect

Writing to the hardware/regs is easy, but coming up with FX isn't. You usually need a software system for stuff like frequency/volume slides and such. Looking at HES files with mednafen, you could copy down the reg writes per frame and 'capture' some sound effects that way.
by tomaitheous
Fri Mar 27, 2009 5:36 pm
Forum: PC-Engine
Topic: Disassembling Tennokoe Bank
Replies: 12
Views: 5239

Re: Disassembling Tennokoe Bank

Is it doing the TII to BSS while in CSH or CSL?
by tomaitheous
Thu Mar 19, 2009 5:49 pm
Forum: PC-Engine
Topic: Azasel music engine
Replies: 8
Views: 3135

Re: Azasel music engine

another double post?
by tomaitheous
Thu Mar 19, 2009 5:49 pm
Forum: PC-Engine
Topic: Azasel music engine
Replies: 8
Views: 3135

Re: Azasel music engine

this is cool but to be honest, i was looking forward to the .mod player you talked about making: http://pcedev.blockos.org/viewtopic.php?f=5&t=22#p69 MOD schmod. Chiptunes rule. MOD format itself isn't really optimal for PCE. A variant of MOD, or just custom wavetable synth engine would be needed. ...