Aley Keprt wrote: > Is external memory contended? Nope.
> Or how does it work? Is it possible to page it into 64KB CPU > space, and then let CPU run at 6MHz in there? Well, it can only be mapped into the upper 32K, not the full 64K address space (still be good enough for a lot of stuff). Depends whether you were thinking about general programs using it, or getting the BASIC system to use external memory instead of contended system RAM. The display will always be in system RAM, so you'd have to write to it in the border area to escape as much contention as possible! Not many people have external RAM though, so I can't imagine any existing software would/could rely on it for the extra speed. It'd certainly screw up fancy demo timings too! Si
