Thread View: net.micro.atari8
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Started by Richard Andrews
Fri, 10 Oct 1986 05:31
RS-232 port mod
Author: Richard Andrews
Date: Fri, 10 Oct 1986 05:31
Date: Fri, 10 Oct 1986 05:31
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I have been contemplating a mod to the XL-XE line of Atari computers. It is a uart (RS-232 port). The way that I see it, it wouldn't require too much work. It would be interrupt driven for receive and transmit. There are two unused interrupt vectors in the OS, namely VPRCED and VINTER at locations $202-203 and $204-205. The uart would be mapped to $D700-$D70F. The code for the actual IO would boot from disk like the the 850 code does now. I have the chip count up to 3 chips and now I have two questions- 1) Is anyone interested in such a mod either internal or external to their machine as a public domain item? (internal would be neat...just a DB-25 connector out the rear.) 2) Is anyone interested in marketing such a modification? The total cost to build should be around $25-$30 tops. Any comments?????? reply to.... Rich Andrews ...ihnp4!chinet!cabbie
Re: RS-232 port mod
Author: C. David Young
Date: Sat, 11 Oct 1986 12:18
Date: Sat, 11 Oct 1986 12:18
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An internal uart would be wonderful because we could then run disk I/O and printer I/O simultaneously with serial I/O. I heartily recommend a public domain item. David Young -------
Re: RS-232 port mod
Author: jhs
Date: Sat, 11 Oct 1986 20:40
Date: Sat, 11 Oct 1986 20:40
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I understand the R:Verter gives you another very cheap way to get an RS-232 port, namely use the existing serial I/O channel used for the peripherals, together with MC1488-14889 level converters, the only external chips you need. The "UART" is already implemented in the POKEY chip and all you need to make it work is the software (which may be tricky, but as it uses no silicon, software is free, isn't it?). Does anyone out there in net-land know where to get a driver for the R:Verter? Is is Public Domain? -John Sangster jhs@mitre-bedford.arpa
Re: RS-232 port mod
Author: Eric Sharakan
Date: Fri, 17 Oct 1986 21:51
Date: Fri, 17 Oct 1986 21:51
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A.I.D. (makers of the r:verter) used to have a BBS where any owners of
R:verters can login using the serial number of their device. The BBS
contained all versions of their handlers, as well as some other neat
things. I don't know if it is still operational, you should call them
to find out. (They are located in Fla.)
I have yet to see any of their handlers in the public domain.
--
Eric Sharakan, Thinking Machines Corporation, Cambridge, Ma., 02142
ARPA: SHARAKAN@THINK.COM
UUCP: ...!{ihnp4,seismo,...}!think!sharakan
Re: RS-232 port mod
Author: Richard Andrews
Date: Thu, 23 Oct 1986 07:30
Date: Thu, 23 Oct 1986 07:30
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In article <6507@think.COM> sharakan@godot.think.com.UUCP (Eric Sharakan) writes: >A.I.D. (makers of the r:verter) used to have a BBS where any owners of >R:verters can login using the serial number of their device. The BBS >contained all versions of their handlers, as well as some other neat >things. I don't know if it is still operational, you should call them >to find out. (They are located in Fla.) > >I have yet to see any of their handlers in the public domain. >-- The R-VERTER and any of the software is NOT in the public domain. R-Verter is a copyrighted program of Advanced Interface Devices, Inc. Rich Andrews ...ihnp4!chinet!cabbie
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