On 7/8/2019 7:45 AM, silverdr_at_wfmh.org.pl wrote: > >> On 2019-07-08, at 07:27, Jim Brain <brain_at_jbrain.com> wrote: >> >> I'd like to play around with MMU design on the C64, and wanted to ask for additional thoughts: >> >> • What "page" size would folks recommend? 4K, 8K, 16K? User defined (much harder to implement, but maybe possible) > 4K for code, 8K for gfx comes to mind. Having it selectable (between the two - as opposed to arbitrary size) could be a nice option too. Making the size configurable adds a ton of complexity, so I doubt it makes sense for 4K->8kB. > >> • Where would be a good spot to put the config registers in the 64 memory map? > There's never a good spot for that kind of things :-) but I'd probably tend to go right behind CIA2. I am constrained, in that the registers are in "RAM" space, so they would only be visible when RAM is mapped in.Received on 2020-05-29 22:36:38
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