Fujitsu M2488 manual Format 2 and 3 Sense Information, Hardware Registers

Secondary Interrupt Status (or FFh if none stacked)

Secondary Command Step (or FFh if none stacked)

SPC Command Register

Status (FFh = SPC registers not captured due to SPC being busy)

Nexus Status

Primary Interrupt Status

Primary Command Step

Data/MC Byte (MSB)

Data/MC Byte

Data/MC Byte (LSB)

SCSI Control Signal Status

Transfer Mode

Transfer Period

Transfer Offset

Modified Byte

Self ID Setting

Response Mode Setting

Select/Reselect Mode Setting

Parity Error Detection Setting

Interrupt Enable Setting

Companion chip’s interrupt request mask

Fault Symptom Code

M2488 PRODUCT GUIDE MAINTENANCE AND SERVICING

8-3.2.4 Format 2 and 3 Sense Information, Hardware Registers

Format 2 and 3 provides a listing of controller hardware registers. Bytes 22 and 23 of Format 2 and Format 3 sense data, however, provide fault symptom codes.

Table 8-12. Format 02h Sense Information, SCSI Hardware Registers

BITS

BYTES 7 6 5 4 3 2 1 0

20-21

22-23

SPC Registers (reference the SPC User Manual for a detailed description of these registers)

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

April 1997 CG00000-011503 REV. A 8-13