From: MagerValp (MagerValp_at_cling.gu.se)
Date: 2003-08-18 16:05:09
>>>>> "OA" == Oliver Achten <achten@gmx.de> writes:
OA> My new project i´m going to realize is building my own 65sc816
OA> based accelerator modification for my C64.
Sounds like a fun project!
OA> Now i wonder if my plan to clock it at 8.86Mhz will actually work,
OA> because of the speed of the PLA. Yes, i´m going to integrate a
OA> slow-down circuit for all slow devices in the C64 (VIC, CIA
OA> etc..), but i wonder if the PLA will be fast enough to generate
OA> the chip-selects for the system when the clock goes at 8.86Mhz.
No, you will have to do system writes at 1 MHz. Even if the chip
selects were generated fast enough, the chips themselves need a longer
write cycle. You can find all the chip timings in the PRG and on
funet.
--
___ . . . . . + . . o
_|___|_ + . + . + . Per Olofsson, arkadspelare
o-o . . . o + MagerValp@cling.gu.se
- + + . http://www.cling.gu.se/~cl3polof/
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