If the cart contained the RAM, dual porting would be useful. https://hackaday.com/2014/12/26/dual-porting-a-c64-flash-cart/ /Luke On Thu, May 24, 2018 at 14:48 smf <smf@null.net> wrote: > On 24/05/2018 18:38, Jim Brain wrote: > > > You would get exactly that. All RAM except the 4kB at the bottom and > > the IO page would disappear. If you were able to configure this unit > > to replace the open space with RAM, the entire rest of the memory map > > would have RAM in place for all CPU cycles. > > If you have a load of ROM that can also be paged in, then it might be > quite interesting. It would get past the vic being hard coded to see > character rom at magic addresses. > > Obviously you'd want to port 3-in-1 software from the plus 4. > > You'd lose $00/$01 being able to page in/out the kernal and basic, but > you probably want a new set of roms that knows about the extra ram anyway. > > >Received on 2018-05-25 05:00:07
Archive generated by hypermail 2.2.0.