26 Apr
2001
26 Apr
'01
11:58 a.m.
----- Original Message -----
From: ard(a)p850ug1.demon.co.uk (Tony Duell)
Date: Wednesday, April 25, 2001 3:57 am
Subject: Re: Hmm...what the heck kind of cable is this????
There is no such thing as a simple cable to interconnect the two.
For many years I used a standard null modem cable to connect my PC's
with my A1000 to transfer software between them, can't get much simpler
than that.
Lance
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27 Apr
27 Apr
2:09 a.m.
[RS232 - Commodore Serial cables]
I don't dispute that you can interconnect a Commodore RS232 port (as
found on the Amigas, and the P500) with a PC serial RS232 port using a
null modem cable. In fact I'd be very suprised if this was not the case.
The original suggestion, though was that there was a cable to link
Commodore serial peripherals (as used with the C64, C128, Vic20, etc) to
an RS232 port. Since these interfaces are very different, in voltage
levels, in the bit-level protocol, and in the higher level protocol, I
think it's impossble to use a simple cable to link such devices to a
generic RS232 port.
For serial interfaces check out:
http://www.cmdweb.com/cbm
And check out the "Turbo232 High-Speed Modem Interface". With a SuperCPU you
can go to 115200 bps.
also available:
http://come.to/ide64
This is an IDE interface for the C-64, which has a dual port RS-232 interface.
They are also working on a MP3 Player for IDE64!!
Cheers,
Bryan
There is
no such thing as a simple cable to interconnect the two.
For many years I used a standard null modem cable to connect my PC's
with my A1000 to transfer software between them, can't get much simpler
than that. 
5:22 a.m.
The original
suggestion, though was that there was a cable to link
Commodore serial peripherals (as used with the C64, C128, Vic20, etc) to
an RS232 port. Since these interfaces are very different, in voltage
levels, in the bit-level protocol, and in the higher level protocol, I
think it's impossble to use a simple cable to link such devices to a
generic RS232 port.
For serial interfaces check out:
http://www.cmdweb.com/cbm
And check out the "Turbo232 High-Speed Modem Interface". With a SuperCPU you
can go to 115200 bps.
5:59 a.m.
For serial
interfaces check out:
http://www.cmdweb.com/cbm
And check out the "Turbo232 High-Speed Modem Interface". With a SuperCPU you
can go to 115200 bps.
But, but BUT! that's a cartridge and doesn't do anything with the serial IEC
interface. However, it is an excellent device. Even a plain-jane C64 can
manage a 56k modem at full speed with one.
6:35 a.m.
But, but BUT!
that's a cartridge and doesn't do anything with the serial IEC
interface. However, it is an excellent device. Even a plain-jane C64 can
manage a 56k modem at full speed with one.
Really!?! I was always told (or read) that a 64 needed a SuperCPU to get
over 38400 bps. 
29 Apr
29 Apr
4:24 p.m.
--- Bryan Pope <bpope(a)wordstock.com> wrote:
also available:
http://come.to/ide64
This is an IDE interface for the C-64, which has a dual port RS-232
interface.
I have an older model of this... no "short bus" for add-on peripherals,
but it does do the IDE part fine. I have a 1.3" HP Kittyhawk drive on
mine. Kind of a C-64 hard card.
Fun little project these guys have.
-ethan
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26 Apr
26 Apr
1:33 p.m.
On Fri, 27 Apr 2001, blacklord wrote:
For many years I used a standard null modem cable to
connect my PC's
with my A1000 to transfer software between them, can't get much simpler
than that.
As someone on this list reminded me years ago: there's really no such
thing as a null-modem cable, but there is such a thing as a cable with
pins 2 and 3 crossed, etc. :-)
--
Copyright (C) 2001 R. D. Davis The difference between humans & other animals:
All Rights Reserved an unnatural belief that we're above Nature &
rdd(a)perqlogic.com 410-744-4900 her other creatures, using dogma to justify such
http://www.perqlogic.com/rdd beliefs and to justify much human cruelty.
27 Apr
27 Apr
1:51 a.m.
--- "R. D. Davis" <rdd(a)smart.net> wrote:
As someone on this list reminded me years ago:
there's really no such
thing as a null-modem cable, but there is such a thing as a cable with
pins 2 and 3 crossed, etc. :-)
Would a cable with active electronics in the middle that provided clocking
for synchronous devices count as a "null modem"? Technically speaking, I
guess you could call it an integrated modem eliminator, but for a while
Software Results sold this device with two 40-pin ribbon cables, that
could be used to connect a pair of DPV-11s or two COMBOARDs or anything
that used one of DEC's pinouts for a sync serial connection. It had some
line buffers and a COM 8116(?) baud rate generator chip. One of these days,
I want to make a board with this same chip for my PDP-8/L and PDP-8/i to
clock the serial connection at something other than 110 bps (I was thinking
of 150 in/9600 out and run it with a VT52 or VT220 since they both support
split baud rates and have 20mA inputs).
-ethan
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