On 5/7/2018 12:01 PM, smf wrote: > On 07/05/2018 14:42, Mia Magnusson wrote: >> But since you can relocate zero page and the stack page independent of >> all other switching you don't need to care about "pulling away the >> floor you are standing on". > > It's not just that, the preconfiguration registers would be kinda > broken if they didn't have their own copy of the extra bits. > > > How does one get a handle on how the MMU works? I am looking at: https://patpend.net/technical/c128/C128io.doc.txt http://www.oxyron.de/html/registers_mmu.html https://ia801002.us.archive.org/10/items/Compute_s_Mapping_the_Commodore_128/Compute_s_Mapping_the_Commodore_128.pdf I see the registers, but I'm not sure I understand the PCR and LCR regs. Is there a document that explains these? Jim -- Jim Brain brain@jbrain.com www.jbrain.comReceived on 2018-05-07 21:00:03
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