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Parity Options 2-7
Table 2.2 SCSI Parity Control
EPC AESP Description
0 0 Does not check for parity errors. Parity is generated when sending
SCSI data. Asserts odd parity when sending SCSI data.
0 1 Does not check for parity errors. Parity is generated when sending
SCSI data. Asserts even parity when sending SCSI data.
1 0 Checks for odd parity on SCSI data received. Parity is generated
when sending SCSI data. Asserts odd parity when sending SCSI
data.
1 1 Checks for odd parity on SCSI data received. Parity is generated
when sending SCSI data. Asserts even parity when sending SCSI
data.
1. Key:
EPC = Enable Parity Checking (bit 3, SCSI Control Zero (SCNTL0)).
ASEP = Assert SCSI Even Parity (bit 2, SCSI Control One (SCNTL1)).
Table 2.3 SCSI Parity Errors and Interrupts
DPH PAR Description
0 0 Halts when a parity error occurs in the target or initiator mode and
does not generate an interrupt.
0 1 Halts when a parity error occurs in the target mode and generates
an interrupt in target or initiator mode.
1 0 Does not halt in target mode when a parity error occurs until the
end of the transfer. An interrupt is not generated.
1 1 Does not halt in target mode when a parity error occurs until the
end of the transfer. An interrupt is generated.
Key:
DHP = Disable Halt on SATN/ or Parity Error (bit 5, SCSI Control One (SCNTL1).
PAR = Parity Error (bit 0, SCSI Interrupt Enable Zero (SIEN0).
This table only applies when the Enable Parity Checking bit is set.