65 lines
3.8 KiB
Plaintext
65 lines
3.8 KiB
Plaintext
======= TurboGrafx compatibility issues =======
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General:
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+ Don't have a complete list of instructions affected by T flag. Currently warns if SET precedes an unrecognized instruction.
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+ Audio volumes are probably wrong.
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+ LFO is not implemented, though I can't tell.
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+ Screen resolution is an ongoing issue. Some games appear to show garbage beyond what it supposed to be visible.
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Most emulators simply crop the screen at a certain vertical range. For now, I have chosen not to do this.
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Right now the emulator is simply displaying a framebuffer. Eventually, we will do an update that emulates NTSC.
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But for now we're letting this be. There's no intermediate step between emulating a framebuffer and emulating a TV.
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Air Zonk - Fully playable, doesn't freeze, but some gfx/timing issues
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Battle Ace - Some gfx glitches
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Chase HQ - Press start -"O" sprite gets left on screen. probably timing on SATB DMA
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Cross Wiber - Minor; Raster on wrong line
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Davis Cup Tennis - Some timing issue, splash screen is too slow
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Dungeon Explorer - Freeze in 'intro' - gfx corruption in-game
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Fighting Run - Corruption issues
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Gunboat - Crash / CPU Break (Needs BRAM)
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Legend of Hero Ton- Slight gfx- check top of screen
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Lode Runner - Freezes in new game
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Madoo Granzort - Graphics issues because SGX VPC renderer is not using new frame timing
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MML Demo - Echo channels are too loud (equal volume!)
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Outrun - Raster issues, music slows when paused
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Paranoia - Game hits BREAK on 3rd level. need to investigate
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Populous - Game freezes on starting new game - *** NEEDS BATTERY SAVERAM ***
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Power Drift - Timing glitch... starting new game runs slower than it should
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Power Tennis - Elaborate intro screen doesnt display right
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Raiden - Sprites and BG get out of sync with current timing
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Sinistron - Much less bad raster effect errors now
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Tiger Road - On second level, sprites should be getting masked from the top status area somehow
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===================================
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Games that need TV Emulation (to varying degrees)
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===================================
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Final Blaster - Intro does crazy shit with video modes; not sure what if anything to do about it
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Griffon - Screen goes black because game changes video mode mid-frame
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===================================
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Games with 'Frame Too Tall' issues:
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===================================
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Aero Blaster - Bottom of Screen extends too many lines - like 3 extra or so
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Alice - Screen too tall; glitches when scrolling up, but in pcejin also,
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but not ootake; ergo probably a timing artifact
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Dead Moon - Screen is too tall
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Jack Nicholas Golf- Some screens are too tall and reveal bad gfx below the intended visible screen
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Metal Stoker - Tearing when scrolling vertically at bottom of screen - screen too tall?
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Side Arms - Screen is like 4 pixels too tall
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Stuff I Fixed That's Not In Other Docs:
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+ Street Fighter II special mapper
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+ Populous has special BRAM / saveRAM (I have not yet fixed this) - Gunboat appears to be the same
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+ After Burner - There is a 1-instruction delay on changes to IRQ Control Byte taking effect
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+ There is a one-instruction delay on changes to the I flag taking effect
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- Affects (Not a complete list): Blodia, Body Conquest 2, Champions Forever Boxing,
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Cross Wiber, Jackie Chan, Jigoku Meguri, New Adventure Island, World Beach volley
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- Actually, I'm not at all convinced there's always a 1-instruction delay on the I-flag.
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But this fixes several games; clearly there are delays in some scenarios. But it's not clear
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to me that this delay is ALWAYS present.
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+ Writing to the SATB location register of the VDC requests a VRAM->SAT DMA even if the SAT DMA
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bit is disabled in the DCR. |