From: Baltissen, GJPAA (Ruud) (ruud.baltissen_at_abp.nl)
Date: 2004-09-09 10:53:46
Hallo Marko, > Hmm, if you were copying individual files, wouldn't it be > possible to tell the CBM-HD to LISTEN and the 8250 to TALK? You mean sending a TALK to the 8250 and a LISTEN to CBM-HD? On itself a good idea as there is only one transfer par byte instead of two as it is now. Transferring files isn't a problem as the sender will activate EOI at the end of the file. But how are you going to tell the sender to activate EOI at the 256th byte? Having had some good help from Spiro I thought it was time to shift my brain into a higher gear. And I got this: M-R and M-W both have an option to tell how many bytes I want to read/write. The question is if the last byte is sent with an active EOI but that is something that can be tested quite easy. But the docs state that one can only read from 1 up to 255 bytes. I need to read 256. I could try if 0 is translated as 256 otherwise I have to do it in two batches. More worrying is the fact that I only can write up to 34 byte. Is the computer to blame or the drive? In case of CBM-HD I even didn't know what to do with this number; at this moment I keep on storing bytes until I get an EOI or an ATN. Hmmm, I can adjust my test program a bit and see what the effect is on a real drive: I'll write more bytes then actually planned and then will read back the contents. -- ___ / __|__ / / |_/ 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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