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From: mdavis@pro-sol.cts.com (Morgan Davis)
Newsgroups: comp.sys.apple2
Subject: Re: Modem/Serial ports to 38.4k baud or >
Message-ID: <3380@crash.cts.com>
Date: 2 Jul 90 18:56:02 GMT
Sender: root@crash.cts.com
Lines: 20
X-Local-Date: 2 Jul 90 11:56:02 PDT

In-Reply-To: message from ART100@psuvm.psu.edu

The supposed enhancement for the IIGS modem port to allow it to operate
at 38.4Kbps is a little misleading.  The 8530 SCC chip in your IIGS has
the ability RIGHT NOW to operate at 38.4Kbps, only Apple didn't put that
speed setting into the serial port *firmware* command recognition.  One
would surmise that it was left out because the firmware has enough
trouble handling 19.2Kbps throughput on a stock IIGS.  Perhaps a Transwarped
IIGS could handle 38.4Kbps, for which the speed enhancement would
be excellent.

Most commercial IIGS terminal program (i.e. MouseTalk) bypass the serial port
firmware altogether, with dramatic speed/performance improvements since they
go directly to the 8530 SCC.  So if you expect this enhancement to affect
all of your communications software, it won't--only those that use the
serial port firmware.

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