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From: ralphw@ius2.cs.cmu.edu (Ralph Hyre)
Newsgroups: comp.sys.apple
Subject: Re: APW and other stuff
Message-ID: <1115@ius2.cs.cmu.edu>
Date: Mon, 20-Apr-87 16:03:17 EST
Article-I.D.: ius2.1115
Posted: Mon Apr 20 16:03:17 1987
Date-Received: Tue, 21-Apr-87 03:03:23 EST
References: <3624@think.UUCP>
Organization: Carnegie-Mellon University, CS/RI
Lines: 23
Keywords: APW, SCC

In article <3624@think.UUCP> whitney@godot.think.com.UUCP (David Whitney) writes:
...
>Next question:
>
>Real Modem Program Programmers Don't Use The Firmware. They get right down
>on the bare metal and use the serial chip directly. On the Apple //c, this was
>easy because it was documented. On the //GS, it's hard because it's not
>documented.
Apple probably hasn't documented because they want you to use the firmware.
The only reasons not to are speed and functionality - Apple and hardware
developers should be able to provide both.

If Apple doesn't provide a needed feature (like sending BREAK, for example)
in Firmware, let them know how to do it right. [Apple provides for CONTROL
and INTERRUPT entry points in newer firmware, firmware developers should agree
on what the byte-size command for 'send BREAK' is.  Apple needs to provide 
some guidance in this area.]
-- 
					- Ralph W. Hyre, Jr.

Copyright (c) 1987 by Ralph W. Hyre, Jr.
Internet: ralphw@ius2.cs.cmu.edu    Phone:(412)268-{2847,3275} CMU-{BUGS,DARK}
AX25: N3FGW@KA3ORW (AX25), or just c/o W3VC, CMU Radio Club, Pittsburgh, PA