Technote HW 10 | January 1986 |
Below are pinout descriptions for some Macintosh Plus ports and cables that are different than the Macintosh 128K and 512K. Note that any unconnected pins are omitted.
Figure 1: Macintosh Plus Serial Connectors (Mini DIN-8)
Figure 2: Macintosh Plus SCSI Connector (DB-25)
Pin Name Description/Notes
1 REQ-
2 MSG-
3 I/O-
4 RST-
5 ACK-
6 BSY-
7 Ground
8 DB0-
9 Ground
10 DB3-
11 DB5-
12 DB6-
13 DB7-
14 Ground
15 C/D-
16 Ground
17 ATN-
18 Ground
19 SEL-
20 DBP-
21 DB1-
22 DB2-
23 DB4-
24 Ground
25 TPWR Not connected
Figure 3: Apple System Peripheral-8 Cable (connects Macintosh Plus to ImageWriter II and Apple Personal Modem )
(Product part number: M0187)
(Cable assembly part number: 590-0340-A (stamped on cable itself).
( DIN-8 ) ( DIN-8 )
1 2
2 1
3 5
4 4
5 3
6 8
7 7
8 6
Macintosh Plus Adapter Cable
(connects Macintosh Plus DIN-8 to existing Macintosh DB-9 cables)
(Apple part number: M0189)
(Cable assembly part number: 590-0341-A (stamped on cable itself).
Further Reference: