Hi, SASI is really easy to emulate, Even worse :) the 9060 / 9090 could even believe that it is really connected to the hard disk He wants. SASI is really simple no heads, no tracks, just a continuum of blocks 0 .. size of the disk For the rest it's almost a simple parallel port. I'll have to check the firmware of the 9060/9090 to see what command need to be implemented (probably 4 or 5) status, inquiry, read, write, format I'll write a short documentation on SASI. For the interface card, the one I was using was just a 6522 With a 4K eprom in $9000 the via was In $9ff0 The software to send a sasi command was 256 bytes long :) As far as I can remember data on port A, ACK on CA1 REQ on bit 7 of port B I/O bit 6 C/D bit 5 -----Message d'origine----- De : firstname.lastname@example.org [mailto:email@example.com] De la part de Ruud@Baltissen.org EnvoyÃ© : lundi 7 dÃ©cembre 2009 22:48 Ã€ : Didier Derny; firstname.lastname@example.org Objet : Re: CBM D9090 Update Hallo Didier, > I have a Â« wild Â» idea ... It is not wild at all. In fact it is good. But 1) just find someone who can program it and 2) the find out if it is good enough for the SASI controller. If it isn't the 3) find someone who understands SASI. My own idea: skip the SASI and replace these parts of the ROM with that addresses an IDE hard disk (or a SD card or what ever) directly. But lack of time...... :( -- ___ / __|__ / / |_/ Groetjes, Ruud Baltissen \ \__|_\ \___| http://Ruud.C64.org Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2009-12-08 20:00:03
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