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IBM PS/2 - MCA-IDE (72-pin) Hard Disk Connector



IBM PS/2 - MCA-IDE (72-Pin) HDD Connector.

Pin Signal Name Pin Signal Name
A1 -CD Setup B1 Addr Bit 15
A2 Addr Bit 13 B2 Addr Bit 14
A3 Ground B3 Ground
A4 Addr Bit 11 B4 OSC (14.3MHz)
A5 Addr Bit 10 B5 Ground
A6 Addr Bit 9 B6 Addr Bit 12
A7 +5 Vdc B7 -CMD
A8 Addr Bit 8 A8 -CD SFDBK
A9 Addr Bit 7 B9 Ground
A10 Addr Bit 6 B10 Data Bit 1
A11 +5 Vdc B11 Data Bit 3
A12 Addr Bit 5 B12 Data Bit 4
A13 Addr Bit 4 B13 Ground
A14 Addr Bit 3 B14 CHRESET
A15 +5 Vdc B15 Data Bit 8
A16 Addr Bit 2 B16 Data Bit 9
A17 Addr Bit 1 B17 Ground
A18 Addr Bit 0 B18 Data Bit 12
A19 +12 Vdc B19 Data Bit 14
A20 -ADL B20 Data Bit 15
A21 -PREEMPT B21 Ground
A22 -Burst B22 Data Bit 0
A23 +5 Vdc B23 Data Bit 2
A24 ARB 0 B24 Data Bit 5
A25 ARB 1 B25 Ground
A26 ARB 2 B26 Data Bit 6
A27 +12 Vdc B27 Data Bit 7
A28 ARB 3 B28 Data Bit 10
A29 +ARB/-GRANT B29 Ground
A30 -TC B30 Data Bit 11
A31 +5 Vdc B31 Data Bit 13
A32 -S0 B32 -SBHE
A33 -S1 B33 Ground
A34 +M/-IO B34 -CD DS 16
A35 Ground B35 -IRQ 14
A36 CD CHRDY B36 Ground


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