Hallo Mike, > A bank-switched ROM could be used to enhance JiffyDOS 64:..... Great ideas! Hallo Pete, > It would be nice to be able to reconfigure a flash device than > burn EPROMs, ... The idea was indeed to be able to write FlashRAMs. That's why I asked here on the list how it could be done some time ago. Hallo Micha³, > It is working right now but requires access to the BASIC ROM > for reprogramming, ... I don't understand that, please explain. On a VIC-20 one can write to the ROM, on my expanded VIC-2o the GAL takes care of disabling writing to the FlashRAM. It starts up with a menu enabling you to choose the needed ROMs. The menu will also enable you to reprogram the FlashRAM. It will copy the program doing that job to RAM, will ask for what bank has to be programmed, what data to be loaded from disk (or catridge or other sources) and start the job. FYI: in my case a switch takes care of write-protecting the FlashRAM. But I'm thinking about using another free pin of the extra 6522. On the C64 writing to the ROM in reality means writing to the RAM under the ROM. So it will require a bit more ingenious hardware to overcome this problem. IMHO a simple trick is tapping the CASRAM signal and combining it with an address decoder. So data written to the "ROM" will be written to the FlashRAM as well. -- ___ / __|__ / / |_/ Groetjes, Ruud \ \__|_\ \___| URL: Ruud.C64.org 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. APG Algemene Pensioen Groep NV is gevestigd te Heerlen en is ingeschreven in het handelsregister van de Kamer van Koophandel Limburg onder nummer 14099617 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. APG Algemene Pensioen Groep NV is registered in the trade register of the Chamber of Commerce Limburg, The Netherlands, registration number: 14099617 Message was sent through the cbm-hackers mailing listReceived on 2013-06-06 07:00:04
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