NuBus 90 connector pinout

#Computer#Buses and Slots

Available on old Apple Macintosh computers. NuBus with clock rate 20 MHz.

UNKNOWN connector  at the card

Row A

PinNameDescription
1-12 V-12 VDC
2SB0 
3/SPV 
4/SP 
5/TM1 
6/AD1Address/Data 1
7/AD3Address/Data 3
8/AD5Address/Data 5
9/AD7Address/Data 7
10/AD9Address/Data 9
11/AD11Address/Data 11
12/AD13Address/Data 13
13/AD15Address/Data 15
14/AD17Address/Data 17
15/AD19Address/Data 19
16/AD21Address/Data 21
17/AD23Address/Data 23
18/AD25Address/Data 25
19/AD27Address/Data 27
20/AD29Address/Data 29
21/AD31Address/Data 31
22GNDGround
23GNDGround
24/ARB1 
25/ARB3 
26/ID1 
27/ID3 
28/ACK 
29+5 V+5 VDC
30/RQST 
31/NMRQ 
32+12 V+12 VDC

Row B

PinNameDescription
1-12 V-12 VDC
2GNDGround
3GNDGround
4+5 V+5 VDC
5+5 V+5 VDC
6+5 V+5 VDC
7+5 V+5 VDC
8/TM2 
9/CM0 
10/CM1 
11/CM2 
12GNDGround
13GNDGround
14GNDGround
15GNDGround
16GNDGround
17GNDGround
18GNDGround
19GNDGround
20GNDGround
21GNDGround
22GNDGround
23GNDGround
24/CLK2X 
25STDBYPWR 
26/CLK2XEN 
27/CBUSY 
28+5 V+5 VDC
29+5 V+5 VDC
30GNDGround
31GNDGround
32+12 V+12 VDC

Row C

PinNameDescription
1/RESETReset
2SB1 
3+5 V+5 VDC
4+5 V+5 VDC
5/TM0 
6/AD0Address/Data 0
7/AD2Address/Data 2
8/AD4Address/Data 4
9/AD6Address/Data 6
10/AD8Address/Data 8
11/AD10Address/Data 10
12/AD12Address/Data 12
13/AD14Address/Data 14
14/AD16Address/Data 16
15/AD18Address/Data 18
16/AD20Address/Data 20
17/AD22Address/Data 22
18/AD24Address/Data 24
19/AD26Address/Data 26
20/AD28Address/Data 28
21/AD30Address/Data 30
22GNDGround
23/PFW 
24/ARB0 
25/ARB2 
26/ID0 
27/ID2 
28/START 
29+5 V+5 VDC
30+5 V+5 VDC
31GNDGround
32/CLKClock

MultiMedia card connector pinout

NuBus connector pinout