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Amiga Technical References

Zorro II and III Pinouts

Zorro is the expansion bus standard for the Amiga 500, 1000, 2000, 3000(T), and 4000(T). These pin outs cover Zorro II (Amiga 2000) and Zorro III (Amiga 3000 and up)

This information came from the back of the Amiga 3000T manual.

    
                                           Zorro III        Zorro III
Pin  Physical Name     Zorro II Name       Address Phase    Data Phase
---  ----------------- ------------------- ---------------- -----------------
  1  Ground            Ground              Ground           Ground
  2  Ground            Ground              Ground           Ground
  3  Ground            Ground              Ground           Ground
  4  Ground            Ground              Ground           Ground
  5  +5VDC             +5VDC               +5VDC            +5VDC
  6  +5VDC             +5VDC               +5VDC            +5VDC
  7  OWN ___           OWN ___             OWN ___          OWN ___
  8  -5VDC             -5VDC               -5VDC            -5VDC
  9  SLAVEn ______     SLAVEn ______       SLAVEn ______    SLAVEn ______
 10  +12VDC            +12VDC              +12VDC           +12VDC
 11  CFGOUTn ______    CFGOUTn ______      CFGOUTn ______   CFGOUTn ______
 12  CFGINn _____      CFGINn _____        CFGINn _____     CFGINn _____
 13  Ground            Ground              Ground           Ground
 14  C3 __             C3 Clock ______     C3 Clock ______  C3 Clock ______
 15  CDAC              CDAC Clock          CDAC Clock       CDAC Clock
 16  C1 __             C1 Clock ______     C1 Clock ______  C1 Clock ______
 17  CINH ____         OVR ___             CINH ____        CINH ____
 18  MTCR              XRDY ____           MTCR ____        MTCR ____
 19  INT2 ____         INT2 ____           INT2 ____        INT2 ____
 20  -12VDC            -12VDC              -12VDC           -12VDC
 21  A5                A5                  A5               A5
 22  INT6 ____         INT6 ____           INT6 ____        INT6 ____
 23  A6                A6                  A6               A6
 24  A4                A4                  A4               A4
 25  Ground            Ground              Ground           Ground
 26  A3                A3                  A3               A3
 27  A2                A2                  A2               A2
 28  A7                A7                  A7               A7
 29  LOCK ____         A1                  LOCK ____        LOCK ____
 30  AD8               A8                  A8               D0
 31  FC0               FC0                 FC0              FC0
 32  AD9               A9                  A9               D1
 33  FC1               FC1                 FC1              FC1
 34  AD10              AD10                AD10             AD2
 35  FC2               FC2                 FC2              FC2
 36  AD11              A11                 A11              D3
 37  Ground            Ground              Ground           Ground
 38  AD12              A12                 A12              D4
 39  AD13              A13                 A13              D5
 40  INT7 ___          (EINT7) ____        INT7 ___         INT7 ___
 41  AD14              A14                 A14              D6
 42  IN5 ____          (EINT5) ____        INT5 ____        INT5 ____
 43  AD15              A15                 A15              D7
 44  INT4 ____         (EINT4) ____        INT4 ____        INT4 ____
 45  AD16              A16                 A16              D8
 46  BERR ____         BERR ____           BERR ____        BERR ____
 47  AD17              A17                 A17              D9
 48  MTACK _____       (VPA)               MTACK _____      MTACK _____
 49  Ground            Ground              Ground           Ground
 50  E Clock           E Clock             E Clock          E Clock
 51  DS0 ___           (VMA) ___           DS0 ___          DS0 ___
 52  AD18              A18                 A18              D10
 53  RESET _____       RST ___             RESET _____      RESET _____
 54  AD19              A19                 A19              D11
 55  HLT ___           HLT ___             HLT ___          HLT ___
 56  AD20              A20                 A20              D12
 57  AD22              A22                 A22              D14
 58  AD21              A21                 A21              D13
 59  AD23              A23                 A23              D15
 60  BRn ___           BRn ___             BRn ___          BRn ___
 61  Ground            Ground              Ground           Ground
 62  BGACK ____        BGACK ____          BGACK ____       BGACK ____
 63  AD31              D15                 A31              D31
 64  BGN ___           BGN ___             BGN ___          BGN ___
 65  AD30              D14                 A30              D30
 66  DTACK _____       DTACK _____         DTACK _____      DTACK _____
 67  AD29              D13                 A29              D29
 68  READ              READ                READ             READ
 69  AD28              D12                 A28              D28
 70  DS2               LDS                 DS2              DS2
 71  AD27              D11                 A27              D27
 72  DS3               UDS                 DS3              DS3
 73  Ground            Ground              Ground           Ground
 74  CCS ___           AS __               CCS ___          CCS ___
 75  SD0               D0                  N/A              D16
 76  AD26              D10                 A26              D26
 77  SD1               D1                  N/A              D18
 78  AD25              D9                  A25              D25
 79  SD2               D2                  N/A              D18
 80  AD24              D8                  A24              D24
 81  SD3               D3                  N/A              D19
 82  SD7               D7                  N/A              D23
 83  SD4               D4                  N/A              D20
 84  SD6               D8                  N/A              D22
 85  Ground            Ground              Ground           Ground
 86  SD5               D5                  N/A              D21
 87  Ground            Ground              Ground           Ground
 88  Ground            Ground              Ground           Ground
 89  Ground            Ground              Ground           Ground
 90  Ground            Ground              Ground           Ground
 91  SenseZ3           Ground              SenseZ3          SenseZ3
 92  7M                E7M                 7M               7M
 93  DOE               DOE                 DOE              DOE
 94  IORST _____       BURST ______        IORST _____      IORST _____
 95  BCLR _____        GBG ___             BCLR ____        BCLR ____
 96  INT1 ____         (EINT1) _____       INT1 ____        INT1 ____
 97  FCS ___           Not Used            FCS ___          FCS ___
 98  DSI ___           Not Used            DSI ___          DSI ___
 99  Ground            Ground              Ground           Ground
100  Ground            Ground              Ground           Ground
    
   
The _______'s mean it's active when low. N/A means not available in this phase.

Copyright 2000 Amiga Auckland Inc. All rights reserved.
Revised: August 13, 2005.