Hallo Didier, > Is there any document somewhere explaining how to build the > adapter to program a rom -el ? Hmm weird, my yesterdays email isn't on the list (yet ?). Again: I hope you are known with the 2364 -> 2764 convertor that enables you to use a 2764 EPROM instead of the original 2364? Now you have to do the same but in the opposite direction. On the PCB you'll find some litle holes marked with numbers for the extra needed address lines plus one marked "WE". For the 23256 ROM-EL we only need "16", "18" and "WE", you have to solder some jumper pins in them. Be aware, the holes don't have the normal 0.1 inch spacing; I did it by taking a piece of the keyboard connector of a scrapped C64 and bending the pins a bit. Now take a 28 pins Textool socket and solder it on a 32 pin IC socket. I sawed a piece off from the contra connector of the keyboard connector. The wire for address line 16 goes to pin 2, WE goes to 31 and 18 goes to 1. Pin 30 remains unconnected. two weird things: - my programmer complained about the fact that pin 30 is not connected. But the datasheets also say it is NC ???? Fortunately I can overule that. - Don't ask me why I connected "18" to pin 1 as this one is needed for resetting the AT49F001 (read the datasheets). Maybe a mistake but it works. With the 2364 version I have a problem: rewring the address lines wasn't a problem but the 2364 only has one CS but the AT49F001 has a CE and an OE. How to fool the programmer in an easy way without using an OR gate? -- ___ / __|__ / / |_/ 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 it's 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 2011-12-13 07:00:03
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