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4-108 Registers
cannot be counted for this BMOV as it was actually part
of the byte count for the previous BMOV.
Register: 0xDB
Reserved
Registers:0xDC–0xDF
Cumulative SCSI Byte Count (CSBC)
Read/Write
CSBC Cumulative SCSI Byte Count [31:0]
This loadable register contains a cumulative count of the
actual number of bytes that have been transferred across
the SCSI bus during data phases, i.e. it will not count
bytes sent in command, status, message in or message
out phases. It will count bytes as long as the phase
mismatch enable (ENPMJ) bit in the Chip Control 0
(CCNTL0) register is set. Unlike the SCSI Byte Count
(SBC) this count will not be cleared on each BMOV
instruction but will continue to count across multiple
BMOV instructions. This register can be loaded with any
arbitrary start value.
Registers:0xE0–0xFF
Reserved
31 0
CSBC
00000000000000000000000000000000