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- Newsgroups: comp.dsp
- Path: sparky!uunet!spool.mu.edu!darwin.sura.net!wupost!zaphod.mps.ohio-state.edu!malgudi.oar.net!chemabs!vjh21
- From: vjh21@cas.org (Vince Herried ext 2877)
- Subject: Motorola HC16 finally came, now what :-)
- Message-ID: <1992Sep8.173831.29537@cas.org>
- Sender: usenet@cas.org
- Organization: Chemical Abstracts Service
- Date: Tue, 8 Sep 1992 17:38:31 GMT
- Lines: 36
-
- The MCU chip has a DS0, DS1, and some kind of clock line that goes to a PAL
- chip. The PAL converts the serial data into a parallel I/O line.
- The book says ,plug in yer 25 wire cable between yer IBM pc and
- the HC16 Evaluation board and run....
-
- I don't have an IBM pee cee. I've got a Commodore Amiga which uses
- a MOTOROLA 68030 micro. I think I can come up with an assembler, or
- at least get my files assembled. I would like to talk to the evaluation
- board via my Amiga.
-
- Here is the question......
- Does anyone know the parallel port protocol used?
- The PAL appears to convert the 17 bit command words as documented by the
- CPU16 manual into a 'centronics' parallel port format. The PAL connects
- to 7 of the 8 data lines (The high order line is Not Connected?) the
- Ack line, and the busy line. The question is,
- are all 7 bits used, taking turns sending and receiving?
- Are some used to send and others used to receive?
- How is the handshaking done? Do I gotta hook a logic probe just to
- find out how the data gets to and fro?
-
- I'm ready to start writting code on my Amiga but need some protocol first.
-
- Email would be fine.
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