💾 Archived View for mirrors.apple2.org.za › archive › apple2.caltech.edu › miscinfo › serialcable.tx… captured on 2023-01-29 at 04:11:45.
-=-=-=-=-=-=-
In <53454.539217028@kcbbs.gen.nz>
Corey_Murtagh@kcbbs.gen.nz (Corey Murtagh) writes:
>
>
> Does anyone out there in Net.Land have the pin connections to use for a
>CTS/RTS handshake compatible serial cable for the GS? I am currently using
>one that I hacked together based on the diagram in the Hardware Ref. for the
>GS, but some programs tend to barf quite badly on it, 'cause it doesn't
>support the hardware handshakes.
> Oh, yeah. please post here (to CSA2), as I think others may be interested.
>
In Greg Schaefer's ProTERM v3.0 manual, the suggested wiring for an Apple
IIgs/IIc+ modem cable is (and it works -- I got ranges of 2690-3264 cps
downloading textfiles from the Hayes BBS with an Intel 14.4ex):
Computer Port Modem Signal Name
(Male MINI DIN-8) (Male DB25)
3 2 TD (transmit data)
5 3 RD (receive data)
4 7 GND (signal ground)
Short 8 to 4 GND (signal ground)
2 5 CTS (clear to send)
1 4 RTS (ready to send)
Short 4 to 20 DTR (data terminal ready)
7 8 DCD (data carrier detect)
NOTE: This cable requires that "short circuits" be placed in the cable. This
consists of creating a "Y" connection between the three pins. On the MINI
DIN-8 end, pins 4 and 8 should be connected to each other as well as to pin
7 of the DB25. On the DB 25 end, pins 4 and 20 should be connected to each
other as well as to pin 1 of the MINI DIN-8.