From: Spiro Trikaliotis (trik-news_at_gmx.de)
Date: 2002-08-21 20:44:19
Hello, MagerValp wrote: > >>>>> "NR" == Niklas Ramsberg <email@example.com> writes: > > NR> Anyone willing to help me out here? > > If you have a battery backed up S-RAM that's pin compatible with a > normal 6264, such as the Hyundai HY6264ALP, it's as simple as matching > the pins on the chip to those in the socket. The only signal that > isn't available is the R/W line -- you'll have to bend up that pin and > connect it via a wire to somewhere else on the motherboard. R/W is > available all over the place, check the schematics. I don't know that much about U36 on the C128, but are you sure that the PLA gives a CS if you try to write to that area? It might be something like the "RAM-under-ROM"-syndrome on the C64, where you can write to the RAM under KERNAL or BASIC while the ROM is selected. If the CS is not generated on write, the R/W logic is not that simple anymore. Just a question, Spiro. Message was sent through the cbm-hackers mailing list
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