From: Baltissen, GJPAA (Ruud) (ruud.baltissen_at_abp.nl)
Date: 2005-05-09 16:30:49
Hallo Marko, > Your page basically says "email me for details"; it does not > contain any schematic diagrams or offer any source code (or even > executable code) for downloading. It is all available at <http://www.baltissen.org/cbmhd.htm> http://www.baltissen.org/cbmhd.htm now. Please have a look at it and give me your comment. The layout of the page is not 100% OK yet. I just got some feedback from Spiro which I still have to put into the text. Regarding the program: It works fine with the exception of one feature: the CBM-DOS mode. CBM-HD supports the DOS mode which means access to any DOS-file but, unfortunately, only in 8.3 format. CBM-DOS should enable one to use the CBM naming convention by means of a table that keeps track of the user provided name and the real name under DOS. But implementing this feature caused much more trouble then expected. Regarding the hardware: there are four different cables. All of them have to be connected to a COM- and a LPT port. Why four? Partly historical reasons but in fact you could say that three of them are the IEEE equivalent of the X1541 (version 1), XE1541 (version 3) or XA1541 (version 4) cable. Have a look at the schematics and you probably will understand. Version 3 and 4 are 'transistor only' cables. The 'why' is explained in the text. I'm thinking about making a TTL version but that means it needs a power supply. But these new versions will be full compatible to the original versions. Version 2 is based on an integrated COM/LPT port. That can be a older ISA card but I also already used the onboard ports of a Pentium-75 MHz motherboard. In these particulary cases the transformed MB and card could run the same software. In fact, by adding some extra invertors, I could have made them behave like a version 1 cable (but I discovered that to late). But that is not always possible so therefore I only mentioned it, not giving a ready software solution. Version 2, 3 and 4 can be used under CBM-HD and the future IEEE version of Star Commander. Version 1, as it is now, can only be used for CBM-HD. A version 1 that can be used for SC as well is possible, but then I have to make a full transistor version of it as well. Looking forward to your comment. -- ___ / __|__ / / |_/ 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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