Peritek VCD-V, Руководство пользователя

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Peritek
Installing Your Peritek Graphics Board 2-29
2.5.4 8-bit SCSI Port (VCT-V and VCU-V)
For its optional SCSI port, Peritek follows the "standard" 8-bit SCSI
pinout on the VMEbus P2 connector popularized by Motorola. P2 is a 96
pin header (3 rows x 32 pins), with the B, or center row reserved for use
by the VMEbus address and data buses. Rows A and C are user assignable.
The SCSI port shares some of the same pins with the HSP (see Section
2.5.3, above). Therfore, you can't have both options on the same board.
The following table lists the P2 pin assignments and the corresponding
cable connections for the SCSI option. Remember that only the SCSI or
the HSP can be used on a particular board.
Table 2-17 VCU-V and VCT-V SCSI Connections to VMEbus P2
P2 connector Standard SCSI Connector
Pin Signal Name Pin Signal Name
A1 Data Bit 0, Low Active 2 Data Bit 0, Low Active
A2 Data Bit 1, Low Active 4 Data Bit 1, Low Active
A3 Data Bit 2, Low Active 6 Data Bit 2, Low Active
A4 Data Bit 3, Low Active 8 Data Bit 3, Low Active
A5 Data Bit 4, Low Active 10 Data Bit 4, Low Active
A6 Data Bit 5, Low Active 12 Data Bit 5, Low Active
A7 Data Bit 6, Low Active 14 Data Bit 6, Low Active
A8 Data Bit 7, Low Active 16 Data Bit 7, Low Active
A9 Data Bit Parity, Low Active 18 Data Bit Parity, Low Active
20 Spare
22 Spare
24 Spare
26 Spare
28 Spare
30 Spare
A10 Attention, Low Active 32 Attention, Low Active
Spare, Low Active 34 Spare, Low Active
A11 Busy, Low Active 36 Busy, Low Active
A12 Acknowledge, Low Active 38 Acknowledge, Low Active
A13 Reset, Low Active 40 Reset, Low Active
A14 Message, Low Active 42 Message, Low Active
A15 Select, Low Active 44 Select, Low Active
A16 Command, Low Active 46 Command, Low Active
A17 Request, Low Active 48 Request, Low Active
A18 Input, Low Active 50 Input, Low Active
1-49 ODD-numbered pins are Ground
Build the cable so that only the signal lines are connected. The grounds
can be connected just on the peripheral end.