Date: 2006-06-22 13:52:10
Hallo Atnitrack, > I wouldnt "intercept" anything in the normal sense, I'd just > use my own routines in 1541-RAM to handle all the needs. (You > get your own routines there via the usual m-w and m-e commands). Using your own routines is just another way of interception. The only thing I want is to implement them in ROM because using RAM means the routines have to be reloaded after every reset. Hmmm, question: how are you going to use them? For example, how are you going to tell your 1541 to behave like a 8250? (remark: as far as it concerns the floppy, not the hardware; the 1541 has only 2 KB of RAM for example) The 1541 is not equiped with RAM vectors like the C64 so how are you going to re-route a command? > I plan to use an Atmel AVR .... > ... > What do you think? Let me know. Please explain a bit more what the role of the Atmel is. > > It also looks as if my GCR encoding/decoding routines don't > > work right: .... I found out they work fine. The problem started when I converted bytes read from the floppy disk into normal bytes and back again. I found out that there was en error with the read data. > This is cool, can you send me a picture of the schematics and > software? :) The hardware is quite simple: only solder a 25 pins D-connector on your 6522. I started to write new software. The idea is anyway to forget the concept of G64 for the moment; I just store the bytes I receive and send them back when needed. When this works out fine, I analyse the stored data to see how I can combine the result with G64 and D64 images. -- ___ / __|__ / / |_/ 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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