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loopback hood
A special connector with signal lines configured to allow loopback testing of the
adapter card.
low-density connector
In reference to the SCSI bus, a Xl-conductor connector consisting of two rows of
ribbon contacts spaced 2.16 mm (O.OsS in) apart. See also, high-density connector.
parallel port
The Z-pin connector on the SCSI/parallel adapter card for S-bit parallel data
communications with an output only device, such as a printer.
PA-RISC
Hewlett-Packard’s Precision Architecture Reduced Instruction Set Computing
computer systems.
A method to check that data was accurately transmitted and received. Usually, the
tranmission logic sums the transmitted data unit and, based on the summation,
appends a parity bit. The receiver logic sums the received data unit and, based on its
summation, compares the parity bit. The adapter card’s SCSI port can have its
parity-checking ability enabled or disabled.
Precision Bus
See HP-PB.
SCSI
Small Computer System Interface, often pronounced “skuq”. Refers to both SCSI-1
and SCSI-2.
SCSI-1
Complies with the SCSI specification X3.131 - 1986.
4 Glossary