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A-2 Register Summary
Table A.2 lists the LSI53C810A SCSI registers by register name.
Table A.2 SCSI Registers
Register Name Address Read/Write Page
Adder Sum Output (ADDER) 0x3C–0x3F (0xBC–0xBF) Read Only 5-47
Chip Test Five (CTEST5) 0x22 (0xA2) Read/Write 5-36
Chip Test Four (CTEST4) 0x21 (0xA1) Read/Write 5-34
Chip Test One (CTEST1) 0x19 (0x99) Read Only 5-30
Chip Test Six (CTEST6) 0x23 (0xA3) Read/Write 5-37
Chip Test Three (CTEST3) 0x1B (0x9B) Read/Write 5-32
Chip Test Two (CTEST2) 0x1A (0x9A) Read Only 5-30
Chip Test Zero (CTEST0) 0x18 (0x98) Read/Write 5-29
Data Structure Address (DSA) 0x10–0x13 (0x90–0x93) Read/Write 5-26
DMA Byte Counter (DBC) 0x24–0x26 (0xA4–0xA6) Read/Write 5-38
DMA Command (DCMD) 0x27 (0xA7) Read/Write 5-39
DMA Control (DCNTL) 0x3B (0xBB) Read/Write 5-45
DMA FIFO (DFIFO) 0x20 (0xA0) Read/Write 5-33
DMA Interrupt Enable (DIEN) 0x39 (0xB9) Read/Write 5-44
DMA Mode (DMODE) 0x38 (0xB8) Read/Write 5-41
DMA Next Address (DNAD) 0x28–0x2B (0xA8–0xAB) Read/Write 5-39
DMA SCRIPTS Pointer (DSP) 0x2C–0x2F (0xAC–0xAF) Read/Write 5-39
DMA SCRIPTS Pointer Save (DSPS) 0x30–0x33 (0xB0–0xB3) Read/Write 5-40
DMA Status (DSTAT) 0x0C (0x8C) Read Only 5-20
General Purpose (GPREG) 0x07 (0x87) Read/Write 5-16
General Purpose Pin Control (GPCNTL) 0x47 (0xC7) Read/Write 5-56
Interrupt Status (ISTAT) 0x14 (0x94) Read/Write 5-26
Memory Access Control (MACNTL) 0x46 (0xC6) Read/Write 5-55
Response ID (RESPID) 0x4A (0xCA) Read/Write 5-59