Распиновка разъема C64 RS232 User Port Connector

Распиновка, расположение выводов и внешний вид платы расширения:

C64 RS232 User Port

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.

 (at the computer)

UNKNOWN CONNECTOR at the computer.

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

Contributor:

Joakim Цgren,
Arwin Vosselman,
Mark Sokos

Source:

Usenet posting in comp.sys.cbm — Help on modem -> c64 by Lasher Glenn


Commodore 64 Programmer’s Reference Guide

Copyright © The Hardware Book Team 1996-2004.
May be copied and redistributed, partially or in whole, as appropriate.

Document last modified: 2002-01-10

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