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User Port (CBM 8296)

Connector J2. Hey, the outside is labelled anyway :-)

Connection scheme

     1   2   3   4   5   6   7   8   9   10  11  12
 +--===+===-===-===-===-===-===-===-===-===+===-===--+
 |     |                                   |         |
 +--===+===-===-===-===-===-===-===-===-===+===-===--+
     A   B   C   D   E   F   H   J   K   L   M   N

Signal description

  Pin | Signal      | Notes
  ----+-------------+----------------------------------------------------
    1 | GND         |
    2 | VIDEO       |
    3 | /SRQ IN     |
    4 | /EOI        |
    5 | DIAG        | If pulled to LOW during reset, jump to ROM monitor
    6 | #2CASSREAD  |
    7 | CASSWRITE   |
    8 | #1CASSREAD  |
    9 | VERT DRIVE  |
   10 | HORZ DRIVE  |
   11 | GRAPHIC     |
   12 | GND         |
    A | GND         |
    B | CA1         |
    C | PA0         |
    D | PA1         |
    E | PA2         |
    F | PA3         |
    H | PA4         |
    J | PA5         |
    K | PA6         |
    L | PA7         |
    M | CB2         |
    N | GND         |

Note: All pictures show the plug side.

[1] CBM 8296, Nachtrag zum 8096 Handbuch, p.8

Updated: January 9th, 1998
Created: January 9th, 1998
Status : Verified that pulling DIAG to LOW jumps to ROM monitor
Site copyright © 1997 by Marc-Jano Knopp
This document is part of MJK's Commodore 64 & LCD Page
Brought back to life by Peter Schepers, Dec 10, 2005 because I really liked this site!