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- From: tgreen@iastate.edu (Todd Greenfield)
- Newsgroups: comp.sys.atari.8bit
- Subject: Re: Macs and Ataris
- Message-ID: <tgreen.721352489@vincent2.iastate.edu>
- Date: 9 Nov 92 23:41:29 GMT
- References: <1992Nov9.035958.44537@kuhub.cc.ukans.edu> <1992Nov9.213752.6340@dartvax.dartmouth.edu>
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University, Ames IA
- Lines: 44
-
- In <1992Nov9.213752.6340@dartvax.dartmouth.edu> crow@coos.dartmouth.edu (Preston F. Crow) writes:
-
- >In <1992Nov9.035958.44537@kuhub.cc.ukans.edu> moocow@kuhub.cc.ukans.edu writes:
- [ atari to mac stuff deleted ]
-
- >The SIO2PC device is a combination of hardware and software that allows a
- [ ... ]
- >drive (or printer). Unfortunatley, the PC software is (I believe) written
- >in assembly and is not publicly available, making it rather difficult to
- >port.
-
- I've got a copy of the source in assembly, but I don't know if the
- author wants it distributed. I really like the sio2pc, but to be
- honest, the code isn't the greatest. It would probably be easier to
- rewrite from scratch, though I suppose it'd be a place to start.
-
- >Theoretically, however, the device should work with any computer that can
- >send and receive RS232 signals. [I don't know about Mac's--don't they use
- >RS432? Does this matter?] The issue is writing the software for the
- >server machine to interpret the signals. If you are interested in writing
- >such software, I would suggest contacting Nick Kennedy, the creator of SIO2PC,
- >and asking for a copy of the PC code and any suggestions he may have.
- >Also, I beleive that others have done some work on writing their own software
- >for SIO2PC. If their code is in C, it should be much easier to port.
-
- I've looked at how its done, and it isn't really that difficult.
- There are 4 lines coming from the interface: data out and data in
- (which are just going to the serial chip), the command line, and an
- enable. The trick is getting the timing right. The hardware ref.
- manual has enough info for that. If the mac has a standard rs232
- port, it should be possible. If not, you could also try using the
- printer port. This wouldn't require as much interface hardware, but
- the programming would be more difficult. You'd need to do the UART
- function in software, and timing could be tricky.
-
- I don't have a mac, but if someone wants to give it a try, drop me
- some email. You might also ask the author of AFS, which is the
- program Preston mentioned above. I don't recall who it is, but I
- believe it is in C.
-
- Todd
- --
- Todd Greenfield
- tgreen@iastate.edu
-