TITLE
    PC 5.25" Drive & Macintosh II PC Drive Card: Pinouts and Cabling
Article ID:
Author:
Created:
Modified: 		2060

1/22/88
6/17/92
TOPIC

DISCUSSION



    TOPIC -----------------------------------------------------------

    What are the pinouts for the Macintosh II PC Drive Card and PC 5.25" Drive?

    DISCUSSION ------------------------------------------------------

    Here is the pinout for the DB37 connector on the Macintosh II PC Drive
    card. Note that pins not listed are not used.

    DB37 Signal Name
    _____________________________
    1 ---------- +12 Volts
    2 ---------- Ground
    4 ---------- + 5 Volts
    5 ---------- Ground
    6 ---------- INDEX
    7 ---------- Motor Enable
    8 ---------- Drive Select 1
    9 ---------- Motor enable
    11 --------- Direction
    12 --------- STEP
    13 --------- Write Data
    14 --------- Write Enable
    15 --------- Track 00
    16 --------- Write Protect
    17 --------- Read Data
    18 --------- Side 1
    19 --------- Diskette Change
    20 --------- Ground
    25 --------- Ground


    This is the pinout for the cable, part number 590-0368, used on the PC 5.25
    inch drive. The cable uses a 34 pin connector and smaller 4 pin connector for
    the DC power on the inside of the PC 5.25 inch drive and a DB37 connector that
    attaches to the card in Macintosh II. Note that pins not listed are not used.

    DB37 | Signal Name | 34 pin edge connector | DC Connector
    _________________________________________________________________
    1 ---------- +12 Volts ------------------------------ 1
    2 ---------- Ground --------------------------------- 2
    3 ---------- Low Density ---------- 2
    4 ---------- +5 Volts ------------------------------- 4
    5 ---------- Ground --------------------------------- 3
    6 ---------- Index ---------------- 8
    7 ---------- Motor Enable A ------- 16
    9 ---------- Drive Select A ------- 10
    11 --------- Direction ------------ 18
    12 --------- Step ----------------- 20
    13 --------- Write Data ----------- 22
    14 --------- Write Enable --------- 24
    15 --------- Track 00 ------------- 26
    16 --------- Write Protect -------- 28
    17 --------- Read Data ------------ 30
    18 --------- Side 1 --------------- 32
    19 --------- Disk Change ---------- 34
    20 --------- Ground --------------- 1
    25 --------- Ground --------------- 5
    27 --------- FNPRES --------------- 7



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