Pinouts >  RS-232 and other serial ports and interfaces  >  obsolete computers pinouts
24 pin DZM 12 DREH connector layout
24 pin DZM 12 DREH connector
at the computer
Available on the Commodore C64/C128. Software emulated. The signals does not have true RS232 levels. It's TTL level, and RXD/TXD is inverted. It's just the normal User port, used as a RS232 port.
Pin Name RS232 Description
A GND GND Protective Ground
B+C FLAG2+PB0 RxD Receive Data (Must be applied to both pins!)
D PB1 RTS Ready To Send
E PB2 DTR Data Terminal Ready
F PB3 RI Ring Indicator
H PB4 DCD Data Carrier Detect
K PB6 CTS Clear To Send
L PB7 DSR Data Set Ready
M PA2 TxD Transmit Data
N GND GND Signal Ground
 
Pinout status: +0 -0
There are no any reports for this pinout! You may rate this document by clicking the button below.

Is this pinout
NO DIY devices
Source(s) of this and additional information: Usenet posting in comp.sys.cbm, Help on modem - c64 by Lasher Glenn, Commodore 64 Programmer´s Reference Guide, from Hardware Book, Arwin Vosselman, Mark Sokos
Copyright © 2000-2024 by pinouts.ru team, except user uploaded images.
No portion of this webpage may be reproduced in any form without visible link to pinouts.ru .
Efforts have been made to ensure this page is correct, but it is the responsibility of the user to verify the data is correct for their application.
Change privacy settings