Xref: utzoo comp.os.minix:6433 comp.sys.amiga:37100 comp.sys.amiga.tech:6234
Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!apple!motcsd!xdos!doug
From: doug@xdos.UUCP (Doug Merritt)
Newsgroups: comp.os.minix,comp.sys.amiga,comp.sys.amiga.tech
Subject: Re: 75/1200 baud modem in software?
Message-ID: <431@xdos.UUCP>
Date: 19 Jul 89 15:45:21 GMT
References: <539@vice2utc.chalmers.se> <1052@kuling.UUCP> <431@tardis.Tymnet.COM>
Reply-To: doug@xdos.UUCP (Doug Merritt)
Followup-To: comp.os.minix
Organization: Hunter Systems, Mountain View CA (Silicon Valley)
Lines: 19

In article <431@tardis.Tymnet.COM> jms@tardis.Tymnet.COM (Joe Smith) writes:
>In article <1052@kuling.UUCP> marten@kuling.UUCP (M}rten Norman) writes:
>When you send 8 bits to an async line, the hardware sends 10 bits by
>adding a start bit and a stop bit.  Although one byte at 75 baud takes
>the same amount of time to transmit as 16 bytes at 1200 baud (160 bit times
>total), you can only specify 128 of the 160 bits.  The remaining 32 bits
>will screw up the receiver at the far end.

I would think there's a chance that they wouldn't screw it up, since
we're basically talking about what would look like a glitch in 1/16th
of the received waveform. Would depend on how the receiver hardware was
designed, wouldn't it? Might still be worth a try.
	Doug



-- 
Doug Merritt		{pyramid,apple}!xdos!doug
Member, Crusaders for a Better Tomorrow		Professional Wildeyed Visionary