From: Baltissen, GJPAA (Ruud) (ruud.baltissen_at_abp.nl)
Date: 2005-02-03 16:22:47
Hallo Hatch, > maybe that delayed the /CS1 signal enough? IMHO delaying that signal leads to trouble. But it worked out well for you. My thoughts: during the ocasions things went wrong, it was the read that was faulty, not the write. Could be checked by doing another read. > By the way there where only two examples I could find of a > 6510 connected to static ram, ..... There aren't many designs because there was no need. The C64 already is equiped with the maximum it can address. Anyway I made several designs using SRAM. An 'easy' design is an EPROM-emulator: SRAM mimics EPROM in the $8000/$BFFF range. $DFxx is used as write window and some registers in $DExx set the right page. I did a bit of decoding with as main goal to use as less as IC's as possible (in 1989 I didn't worry about access- and delay-times). Worked fine, no problems at all. -- ___ / __|__ / / |_/ Groetjes, Ruud \ \__|_\ \___| URL: Ruud.C64.org =====DISCLAIMER================================================================= De informatie in dit e-mailbericht is vertrouwelijk en uitsluitend bestemd voor de geadresseerde. Wanneer u dit bericht per abuis ontvangt, verzoeken wij u contact op te nemen met de afzender per kerende e-mail. Verder verzoeken wij u in dat geval dit e-mailbericht te vernietigen en de inhoud ervan aan niemand openbaar te maken. Wij aanvaarden geen aansprakelijkheid voor onjuiste, onvolledige dan wel ontijdige overbrenging van de inhoud van een verzonden e-mailbericht, noch voor daarbij overgebrachte virussen. The information contained in this e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. If you have received it in error, please contact the sender immediately by return e-mail; please delete in this case the e-mail and do not disclose its contents to any person. We don't accept liability for any errors, omissions, delays of receipt or viruses in the contents of this message which arise as a result of e-mail transmission. Message was sent through the cbm-hackers mailing list
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