>>>>> "Pasi" == Ojala Pasi 'Albert' <firstname.lastname@example.org> writes: MV> I'm working in upgrading my Vic-20 with some extra ram to be able MV> to watch (and digitize) Veni Vidi Vic and Vici Iterum MM. Pasi> I have designed a 8/16/24/32kB expansion using one 32kB SRAM and Pasi> one TTL AND chip + some resistors + capacitor, but I haven't had Pasi> time to design the board yet. Does it differ from http://ftp.funet.fi/pub/cbm/documents/projects/memory/vic20/32kB.html ? I was thinking about adding a 3K expansion though, and the only way to do it without any logic chips is by piggy-backing 2114's. Hmm, or I guess I could piggyback three 6264's on top of the character ROM. Sounds ugly though :P Pasi> 32kB SRAM's can be had for about 10FIM (2USD), so I don't think Pasi> the whole thing will be so expensive. If there is enough Pasi> interest, I can make some extra available after the prototype Pasi> has been tested (with or without the chips). I might be interested, kind of depends on how well this experiment works out :) Pasi> Using 2kB SRAMs doesn't sound very cost-effective. That's 0.5 kB, and nope, it ain't :) You can't beat it at simplicity though -- piggy-back the chips and solder the 6 /CS wires. -- ___ . . . . . + . . o _|___|_ + . + . + . . Per Olofsson, konstnär o-o . . . o + MagerValp@cling.gu.se - + + . http://www.cling.gu.se/~cl3polof/ - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
Archive generated by hypermail 2.1.1.