On 20.04.2020 08:56, Gerrit Heitsch wrote: > On 4/20/20 2:29 AM, tokafondo wrote: >> I'd like to know what happens when the VIC gets disabled by software, >> just >> like when the CPU does when loading datassette programs the standard >> way. At >> least, it would refresh DRAM but do the rest of the memory access apply? > > Yes, DRAM Refresh will happen and, as far as I know, VIC will continue > to do DRAM accesses to $3FFF but no longer do badlines. VIC-II will still also perform sprite fetches for each active sprite. > > The only video chip I know from that time that really does free the > bus when it doesn't need it is TED in the 264 series. It will then > also double the CPU clock during that time. > > Gerrit > >Received on 2020-05-30 01:33:17
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