ruud.baltissen_at_abp.nl
Date: 2007-12-05 15:02:39
Hallo Jesper, ATT, Al, >> http://www.baltissen.org/newhtm/..\images\1541ide8.png > > I suspect he used some crazy windows-webeditor. Nope. I use wordpad as editor and the blame is all on me. If you have a look at the sources then you see cause of the problems. The source will show you here which should have been here. I will upload an improved version of the page this evening. Sorry for any inconvenience. @ATT > I have read your post saying that you were using "256 bytes of 512 bytes > of each harddisk sector". Didn't you say this? But what is the problem? Maybe this will clear things: an harddisk sector contains 512 bytes. Using an 8 bits interface means that one can only access 256 of these 512 bytes. Writing $00, $01 .... $FF to a sector with my interface and reading the same sector using a PC will give $FF, $00, $FF, $01, $FF, $02 ..... $FF, $FE, $FF, $FF. > How are you going to map this to several harddisk sectors, then? There is a register to tell the harddisk how may sectors you want to access in one go. So writing 8192 bytes = 32 sectors in a row is no problem. But you MUST complete the process. If there are only 8000 bytes on a 1541 track, you must add the missing 192 bytes. When not writing all 512 bytes to the disk for a sector, you run the risk that the sector is not written from the buffer to the actual disk. -- ___ / __|__ / / |_/ 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. Stichting Pensioenfonds ABP is gevestigd te Heerlen en ingeschreven bij de Kamer van Koophandel Zuid Limburg onder nummer: 41074000 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. Stichting Pensioenfonds ABP, having its registered office at Heerlen, is registered in the Traderegister of the Chamber of Commerce Zuid Limburg (Maastricht), the Netherlands, registration number: 41074000 Message was sent through the cbm-hackers mailing list
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