PET index - pinouts
(C) 1998-2010 André Fachat
Here is a description of some pinouts of the PET connectors. Most (i.e. all so far!) are from the 8296 addendum in the petio text typed in by Olaf Seibert (Many thanks!):
I have also gotten hold of a copy of the 8296 addendum and added some scans of the original pages.
For the layouts please see keyboards.html
80xx separate keyboard 25 pin D-Sub connector
KEYBOARD
========
PLease note that the original documentation in the 8296 addendum
is incorrect. Here you can see the incorrect original documentation,
and here is the relevant part of the schematics.
+-----+--------+
| PIN | SIGNAL |
+-----+--------+
| 1 | DEC 0 |
| 2 | | 1 |
| 3 | | 2 |
| 4 | | 3 |
| 5 | | 4 |
| 6 | | 5 |
| 7 | | 6 |
| 8 | | 7 |
| 9 | | 8 |
| 10 | V 9 |
| 11 | N.C. |
| 12 | GND | 13 1
| 13 | N.C. | +---------------------------+
| 14 | KIN 0 | | o o o o o o o o o o o o o |
| 15 | | 1 | \ o o o o o o o o o o o o /
| 16 | | 2 | --------------------------
| 17 | | 3 | 25 14
| 18 | | 4 |
| 19 | | 5 |
| 20 | | 6 |
| 21 | V 7 |
| 22 | N.C. |
| 23 | N.C. |
| 24 | N.C. |
| 25 | N.C. |
+-----+--------+
I/O - IEEE488, Tape and Userport
As far as I know those connectors were the same for all the PETs, but you never know...
IEEE USER - PORT ==== =========== Arrangement of pins plug J1/J12 Arrangement of pins plug J2 +-----+-------------+-----+--------+ +-----+-------------+-----+--------+ | PIN | SIGNAL | PIN | SIGNAL | | PIN | SIGNAL | PIN | SIGNAL | +-----+-------------+-----+--------+ +-----+-------------+-----+--------+ | 1 | DIO 1 | A | DIO 5 | | 1 | GND | A | GND | | 2 | DIO 2 | B | DIO 6 | | 2 | VIDEO | B | CA1 | | 3 | DIO 3 | C | DIO 7 | | 3 | /SRQ IN | C | PA0 | | 4 | DIO 4 | D | DIO 8 | | 4 | /EOI | D | |1 | | 5 | EOI | E | REN | | 5 | DIAG | E | |2 | | 6 | DAV | F | GND | | 6 | #2CASSREAD | F | |3 | | 7 | NRFD | H | | | | 7 | CASSWRITE | H | |4 | | 8 | NDAC | J | | | | 8 | #1CASSREAD | J | |5 | | 9 | IFC | K | | | | 9 | VERT DRIVE | K | |6 | | 10 | SRQ | L | | | | 10 | HORZ DRIVE | L | V7 | | 11 | ATN | M | V | | 11 | GRAPHIC | M | CB2 | | 12 | CHASSIS GND | N | GND | | 12 | GND | N | GND | +-----+-------------+-----+--------+ +-----+-------------+-----+--------+ [ All IEEE signals are active low ] 1 2 3 4 5 6 7 8 9 10 11 12 +--o--o--o--o--o--o--o--o--o--o--o--o--+ | | J1 / J2 [PCB edge connector] +--o--o--o--o--o--o--o--o--o--o--o--o--+ A B C D E F H J K L M N 1 2 3 4 5 6 7 8 9 10 11 12 +------------------------------------+ | o o o o o o o o o o o o | | | J12 [upright pins on PCB] | o o o o o o o o o o o o | +------------------------------------+ A B C D E F H J K L M N
8296 Tape
The same for the Tape connectors - supposed to be the same for all models
CASSETTE 1 CASSETTE 2 ========== ========== Arrangement of pins plug J3 Arrangement of pins plug J6 +-----+-----+----------------------+ +-----+-----+----------------------+ | PIN | PIN | SIGNAL | | PIN | PIN | SIGNAL | +-----+-----+----------------------+ +-----+-----+----------------------+ | 1 | A | GND | | 1 | A | GND | | 2 | B | +5V | | 2 | B | +5V | | 3 | C | CASS MOTOR | | 3 | C | CASS MOTOR | | 4 | D | CASS READ #1| | 4 | D | CASS READ #2| | 5 | E | CASS WRITE | | 5 | E | CASS WRITE | | 6 | F | CASS SWITCH #1| | 6 | F | CASS SWITCH #2| +-----+-----+----------------------+ +-----+-----+----------------------+ 1 2 3 4 5 6 +--o--o--o--o--o--o--+ | | J3 / J6 [card edge connector] +--o--o--o--o--o--o--+ A B C D E F
8296 Memory expansion J4
MEMORY - EXPANSION ================== Arrangement of pins plug J4 +-----+-----------+-----+--------+ | PIN | SIGNAL | PIN | SIGNAL | J4 +-----+-----------+-----+--------+ | 1 | GND | 26 | GND | 25 o o 50 | 2 | BD0 | 27 | | | o o | 3 | 1 | 28 | | | o o | 4 | 2 | 29 | | | o o | 5 | 3 | 30 | | | o o | 6 | 4 | 31 | | | o o | 7 | 5 | 32 | | | o o | 8 | 6 | 33 | | | o o | 9 | 7 | 34 | | | o o | 10 | N.C. | 35 | | | o o | 11 | N.C. | 36 | | | o o | 12 | /RAMSEL 9 | 37 | | | o o | 13 | /RAMSEL A | 38 | | | o o | 14 | /RAMON | 39 | | | o o | 15 | /SELEXP | 40 | | | o o | 16 | N.C. | 41 | | | o o | 17 | /CS 9 | 42 | | | o o | 18 | /CS A | 43 | | | o o | 19 | /CS E | 44 | | | o o | 20 | /NOROM | 45 | | | o o | 21 | /PENSTRB | 46 | | | o o | 22 | /RESET | 47 | | | o o | 23 | READY | 48 | | | o o | 24 | /NMI | 49 | V | o o | 25 | GND | 50 | GND | 1 o o 26 +-----+-----------+-----+--------+
8296 Memory expansion J9
MEMORY - EXPANSION ================== Arrangement of pins plug J9 +-----+-----------+-----+--------+ | PIN | SIGNAL | PIN | SIGNAL | J9 +-----+-----------+-----+--------+ | 1 | GND | 26 | GND | 25 o o 50 | 2 | BA 0 | 27 | | | o o | 3 | 1 | 28 | | | o o | 4 | 2 | 29 | | | o o | 5 | 3 | 30 | | | o o | 6 | 4 | 31 | | | o o | 7 | 5 | 32 | | | o o | 8 | 6 | 33 | | | o o | 9 | 7 | 34 | | | o o | 10 | 8 | 35 | | | o o | 11 | 9 | 36 | | | o o | 12 | 10 | 37 | | | o o | 13 | 11 | 38 | | | o o | 14 | 12 | 39 | | | o o | 15 | 13 | 40 | | | o o | 16 | 14 | 41 | | | o o | 17 | 15 | 42 | | | o o | 18 | SYNC | 43 | | | o o | 19 | /IRQ | 44 | | | o o | 20 | DIAG | 45 | | | o o | 21 | PHI2 | 46 | | | o o | 22 | B R/W | 47 | | | o o | 23 | /B R/W | 48 | | | o o | 24 | N.C | 49 | V | o o | 25 | GND | 50 | GND | 1 o o 26 +-----+-----------+-----+--------+
8296 Power supplies/expansion J10 and J11
POWER EXP. AC POWER EXP. DC ============= ============= Arrangement of pins plugJ10 Arrangement of pins plugJ11 +-----+-----------+ +-----+-----------+ | PIN | SIGNAL | | PIN | SIGNAL | +-----+-----------+ +---+ +-----+-----------+ +---+ | 1 | AC 8V | 1| o | | 1 | +9V UNREG.| 1| o | | 2 | AC 8V | 2| o | | 2 | KEY | 2| | | 3 | GND | 3| o | | 3 | KEY | 3| | | 4 | KEY | 4| | | 4 | +9V UNREG.| 4| o | | 5 | GND | 5| o | | 5 | GND | 5| o | | 6 | AC 8V | 6| o | | 6 | +9V UNREG.| 6| o | | 7 | AC 8V | 7| o | | 7 | GND | 7| o | +-----+-----------+ +---+ +-----+-----------+ +---+
8296 Changes in arrangements of pins Memory expansion J4
This is the change from 8032 (old) to 8296 (new).
J 4 Memory expansion +-----------------------------------+ | Pin Signal | | old new | +-----------------+-----------------+ | 12 /SEL 4 | /RAM SEL 9 | | 13 /SEL 5 | /RAM SEL A | | 14 /SEL 6 | /RAM ON | | 15 /SEL 7 | /SEL EXP | | 16 /SEL 8 | N.C. | | ... | | | 19 /SEL B | /CS E | +-----------------+-----------------+
8296 Power supply J8 changes from 8032
J 8 Power supply +-----------------+-----------------+ | 8032 | 8096 | | | | | Pin Signal | Pin Signal | +-----------------+-----------------+ | 1 8V AC | 1 AC | | 2 +9V UNREG | 2 GND | | 3 GND | 3 AC | | 4 8V AC | | | 5 8V AC | | | 6 GND | | | 7 KEY | | | 8 14V AC | | | 9 14V AC | | +-----------------+-----------------+
8296 Power supply for hardware expansion J10 changes from 8032
J 10 Power supply for hardware expansion +-----------------------------------+ | Pin Signal | | old new | +-----------------+-----------------+ | 1 -9V UNREG | AC 1 | | 2 -9V UNREG | AC 1 | | 3 KEY | GND | | 4 +16V UNREG| KEY | | 5 +16V UNREG| GND | | 6 GND | AC 2 | | 7 GND | AC 2 | +-----------------+-----------------+
8296 keyboard connector on board J5
KEYBOARD ======== Arrangement of pins plug J5 +-----+--------+ | PIN | SIGNAL | J5 +-----+--------+ +---+ | A | KIN 0 | | o | A | B | | 1 | | o | B | C | | 2 | | o | C | D | | 3 | | o | D | E | | 4 | | o | E | F | | 5 | | o | F | H | | 6 | | o | H | J | V 7 | | o | J | 1 | DEC 0 | | o | 1 | 2 | | 1 | | o | 2 | 3 | | 2 | | o | 3 | 4 | | 3 | | o | 4 | 5 | | 4 | | o | 5 | 6 | | 5 | | o | 6 | 7 | | 6 | | o | 7 | 8 | | 7 | | o | 8 | 9 | | 8 | | o | 9 | 10 | V 9 | | o | 10 | 11 | KEY | | | 11 | 12 | GND | | o | 12 +-----+--------+ +---+
8296 Reset switch
RESET
=====
Arrangement of pins plug J14
+-----+--------+
| PIN | SIGNAL |
+-----+--------+ +---+
| 1 | RESET | 1| o |
| 2 | GND | 2| o |
+-----+--------+ +---+
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Last modified: 2021-12-29