> -----Original Message----- > From: Marko Mäkelä [mailto:email@example.com] > Sent: 27 February 2002 13:55 > To: firstname.lastname@example.org > Subject: Re: Serial Slave 0.7b out > > A wild idea: How much does the hardware of the PET disk drives vary? > Would a custom routine that runs on the DOS CPU work on all types of > drives (040, 850 and 900)? I wouldn't be particularly surprised. However, I know very little about drives other than the 1541. (By the DOS CPU I assume you mean the 6502 in the drive) > > True. I will tidy up my own code a little first though. > > But don't look at the protocol the IRQ loader uses. It tolerates > arbitrary pauses on the computer side, but it has very bad throughput. I think I had a look when I was poking around for starting points while I tried to remember what I used to know about fastloaders. (Somewhere I have some code for reading disks that have only one sector per track, and custom 5 bits-in-6 GCR. A parallel cable was required for writing, of course..) > Maybe I haven't pointed it out clearly enough, but the > current version > of cbmlink supports also 6551 based null modem connections (3 wires: > GND, TxD and RxD) on POSIX termios and on Win32. Ahh; Again I need to spend more time reading other peoples documentation :) > > [C2N232] > > I'd be interested in testing it > > In that case, send me your address. After all, I wouldn't > have invented it if I hadn't visited your place. Yes, I saw the note on your C2N page. I seem to recall though, that you'd already made a start on designing the hardware before your visit to the UK; Did you repurpose it in the light of your visit, or have I misunderstood something of the history of this project? I will forward my address privately. Jeanette or John may be willing to do some soldering, but I cannot ask Jeanette until she returns from South America (two weeks). Cheers, Christopher -Virus scanned and cleared ok Message was sent through the cbm-hackers mailing list
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