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- Path: news.dseg.ti.com!news
- From: nobody@is.home (Mike Neus)
- Newsgroups: comp.sys.cbm
- Subject: Re: 1541 serial codes...
- Date: 6 Mar 1996 15:44:14 GMT
- Organization: Texas Instruments
- Distribution: world
- Message-ID: <4hkbse$d9p@mksrv1.dseg.ti.com>
- References: <4h3clh$9i4@vail.levels.unisa.edu.au>
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-
- In article <4h3clh$9i4@vail.levels.unisa.edu.au>,
- pete@cssip.levels.unisa.edu.au says...
- >
- >Being the Mac-centric person I am, I'm looking to develop a Mac-based
- >alternative to programs like Trans64, Star Commander, etc.
- >
- >That is, I'm aiming to control a 1541 from a Mac via the serial port.
- >
- >I think all the data comms are OK, but one thing has me bamboozled:
- >
- >What bits/bytes do I squeeze along the serial bus to get the 1541 listening?
- >ie, how do I wake up the drive via a "OPEN 1,8,15"??
-
- 1) Make sure the serial ports are TTL. I know nothing about Macintosh
- serial ports, but standard RS-232 communicates at +/-12 volts. If the
- Macintosh follows suit you'll more than likely fry the 1541 interface if you
- connect the two in this fasion.
-
- 2) If #1 is OK, get a copy of the C64 Programmers Reference Guide. There
- are complete timing diagrams for sending/recieving data, commands, and EOI.
-
- --
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