Re: 85xx <------> 65xx Mutually replaceable?

From: Spiro Trikaliotis (trik-news_at_gmx.de)
Date: 2003-07-06 18:50:35

Hello Gideon,

On Sun, Jul 06, 2003 at 06:40:44PM +0200, Gideon Zweijtzer wrote:

> I think the CIA#2 is not a candidate, because changing the address lines
> A14 and A15 to the VIC-II does not cause sprites to appear, as they are
> being turned off in the startup routine of the C-64. It is more likely
> that some writes to memory also reflect in writing registers of the
> VIC-II, and hence I think it is the PLA.

Mario wrote that there are colored squares *instead of* sprites when
inserting a cartridge, so I assume that there are indeed sprites, but they
have a wrong content. That was the reason for my advice.

Spiro.

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