Table 2.2 scsi parity control, Table 2.3 scsi parity errors and interrupts, Scsi parity control – LSI 53C810A User Manual
Page 27: Scsi parity errors and interrupts, Table 2.2, Table 2.3
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,
ASEP = Assert SCSI Even Parity (bit 2,
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,
.
PAR = Parity Error (bit 0,
SCSI Interrupt Enable Zero (SIEN0)
This table only applies when the Enable Parity Checking bit is set.