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Table 8–2 (Cont.) SCSI Controller CSRs
Label R/W Description Offset
DCD R/W DMA Command 27
DNAD R/W DMA Next Add for Data 28-2B
DSP R/W DMA SCRIPTS Pointer 2C-2F
30-33
ScratchA R/W General Purpose Scratch Pad 34-37
DMODE R/W DMA Mode 38
DIEN R/W DMA Interrupt Enable 39
DWT R/W DMA Watchdog Timer 3A
DCNTL R/W DMA Control 3B
ADDER R Sum o/p of internal adder 3C-3F
SIEN0 R/W SCSI Interrupt Enable 0 40
SIEN1 R/W SCSI Interrupt Enable 1 41
SIST0 R SCSI Interrupt Status 0 42
SIST1 R SCSI Interrupt Status 1 43
SLPAR R/W SCSI Longitudinal Parity 44
SWIDE R SCSI Wide Residue Data 45
46-47
STIME0 R/W SCSI Timer 0 48
STIME1 R/W SCSI Timer 1 49
STEST0 R SCSI Test 0 4C
STEST1 R SCSI Test 1 4D
STEST2 R/W SCSI Test 2 4E
STEST3 R/W SCSI Test 3 4F
SIDL R SCSI Input Data Latch 50-51
SODL R/W SCSI Output Data Latch 54-55
SBDL R SCSI Bus Data Lines 58-59
ScratchB R/W General Purpose Scratch Pad 5C-5F
8–10 PCI bus