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From: rjray@uokmax.UUCP (Randy J Ray)
Newsgroups: comp.sys.cbm
Subject: Re: 1200baud with the C-64? - (nf)
Message-ID: <757@uokmax.UUCP>
Date: Mon, 28-Sep-87 16:55:59 EDT
Article-I.D.: uokmax.757
Posted: Mon Sep 28 16:55:59 1987
Date-Received: Wed, 30-Sep-87 07:25:46 EDT
References: <9500004@altger.UUCP>
Reply-To: rjray@uokmax.UUCP (Randy J Ray)
Organization: University of Oklahoma, Norman
Lines: 21

In article <9500004@altger.UUCP> playboy@altger.UUCP writes:
>I have now a Hayes modem which can run 12 baud. Now I have a big
>qustion: when I try to run 1200 baud I recieve garbage. Only when
>the host sends slowly (e.g. while chatting with the sysop) the characters
>that I recive are readable. Is the C-64 too slow to recieve with 1200?
> know people in the USA who use the C-64 with 1200 without any probs.
>Is there a solution?

For some reason (that I have yet to REALLY understand, simp that I am), CBM 
machines cannot run true 1200 baud, due to some clock/cycling conflict. 
Most terminal programs and BBS programs (including C-Net) take the number
obtained after dividing the constant given in the '64 ref manual and 
multiply it by about 0.966 I believe. I.e., given the constant RC (different
for you than me, being in Europe), do RC/bd and * by 0.966. There are a 
number of operations you have to do in a similiar way, as well. I shall try to 
find my copy of the C-Net baud change prg file. Yes, as you guessed, you 
need to open your modem file with user-selected baud rate (low nibble of the
1st register is 0).

Randy
rjray@uokmax.UUCP&