Talk:VRC2 and VRC4
§ VRC2 vs VRC4
At least one VRC2-using pirate game actually uses the microwire interface in the VRC2. I can't decide whether this warrants any mention at all... —Lidnariq (talk) 14:23, 28 April 2017 (MDT)
- Heh, that's interesting. I'm not opposed to mentioning pirate stuff on the wiki, just I'm not interested much in it myself so I'd never add something like that. In this case it's a hack of River City Ransom? - Rainwarrior (talk) 14:58, 28 April 2017 (MDT)
PRG Swap Mode control register is initialized '0' on power up state. Because the reset vector is assigned $e000-$ffff area in all VRC4 games. But some VRC2 games reset vectors uses $c000-$dfff area. If you wants run VRC2 games on VRC4 without reset vector hacking and initialize swap control, games does not run. I think Konami wants remove compatibilities in similar hardwares with a little change.--Naruko (talk) 19:42, 2 May 2017 (MDT)
A2/A1 - what does that suppose to mean in VRC2/VRC4 table? Shouldn't be A0/A1? It is misleading (Krzysiobal)
- Thanks, yes that was a mistake. I've fixed it, though please feel free to make edits yourself. (Also the "automatic" way to sign a talk post with your username and date is to type ~~~~ where the signature should go.) - Rainwarrior (talk) 14:09, 20 June 2017 (MDT)
The scanline IRQ category is inappropriate for the VRC4 IMO. The VRC4 does not detect actual scanlines the way the MMC3 or MMC5 does. Rather, its "scanline" mode is just a prescaler for the cycle-based IRQ counter. That makes it a pseudo-scanline IRQ counter at best. NewRisingSun (talk) 16:45, 22 December 2021 (UTC)
