HuFlashCard - update - Torlus Development

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HuFlashCard - update

Par Torlus, Friday 11 July 2008 à 07:42 :: Oldies :: #216 :: rss

I double-triple-checked my board, in order to sort out the issues I talked about in my previous post, but everything looked correct at the hardware level so far... krb then suggested to chat with some people in the PCE homebrew scene, and the well-known hacker Charles MacDonald explained me the weird ROM layout when it comes to games larger than 256Kb. After some attempts, I patched my flash programming software to take care of this layout, and it works !

Here you can see Bomberman '93 running fine on a SuperGrafx. Thank you Pascal and Charles for your help ;)

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Commentaires

1. Le Wednesday 30 July 2008 à 19:48, par MrSporty

Just out of curiosity , what does differ in the rom layout for ones larger than 256k ?

2. Le Wednesday 30 July 2008 à 20:35, par Torlus

Well, for a 512k ROM, splitted in one 256k bank A, and one 256k bank B, you'd expect to encounter on a 1M adressing space the following layout : A B A B. But here, it looks like A19 and A18 address pins are swapped, so the layout is A A B B.

3. Le Monday 4 August 2008 à 19:09, par MrSporty