78Chapter 4: Meridian Link/CCR hardware

P2 adapter board

The P2 adapter board (shown in Figure 24) mounts directly behind the SBC card slot, and connects to the SBC card through the J2 connector on the VME bus backplane. The adapter board provides the following:

¥a 50-pin connector for SCSI cable connection to the disk/tape unit

¥a 64-pin connector, which interfaces I/O port and printer port signals to the MVME712 transition card through a 64-conductor ribbon cable

Figure 24

P2 adapter board

2

 

 

 

 

J2

 

 

64

1

 

 

 

 

 

 

63

 

 

 

 

 

 

 

F1

2

 

 

 

J1

 

 

C4

1

 

 

 

 

 

 

 

 

 

 

 

 

 

1

R1

 

 

R2

 

R3

 

 

 

C1

 

1

C2

1

C3

 

 

 

 

 

 

 

 

CR1

 

 

 

 

 

 

 

 

 

1

3

1

3

1

J5

8

 

 

 

J3

 

J4

 

 

 

C1

 

 

 

 

 

 

 

C32

B1

 

 

 

 

 

 

 

B32

A1

 

 

 

 

 

 

 

A32

 

 

 

 

 

P2

 

 

 

553-3202-210 Standard October 1998

Page 96
Image 96
Meridian America Link/Customer Controlled Routing manual P2 adapter board