Re: [stella] 2600 F8 game on 7800 RAM cart

Subject: Re: [stella] 2600 F8 game on 7800 RAM cart
From: Adam Wozniak <adam@xxxxxxxxxxxxxxxx>
Date: Mon, 21 Apr 2003 09:22:53 -0700 (PDT)
On Mon, 21 Apr 2003, Eckhard Stolberg wrote:
> Unfortunately that won't work. In 2600 mode the 7800 maps
> in the TIA and RIOT in all even 4K segments of the 6502
> memory map. Therefore you can only use the odd 4K segments
> for a game. You have to double the segments in the ROM and
> compile the later halves for $D000 and $F000.

This should work, if loaded at $D000.  The range from $E000 to $EFFF
is all $00.

This may not have been a fair test though, as it seems Galaxian
was well suited to this sort of manipulation...

Will code for food.

"Fools despise wisdom and instruction." Proverbs 1:7 

Attachment: galaxian_ram.bin
Description: galaxian_ram.bin

Current Thread