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GEN bit in the SCSI Interrupt Status One (SIST1) register
is set. Refer to the table under SCSI Timer Zero
(STIME0), bits [3:0], for the available time-out periods.
Note: To reset a timer before it expires and obtain repeatable
delays, the time value must be written to zero first, and then
written back to the desired value. This is also required
when changing from one time value to another. See
Chapter 2, “Functional Description,” for an explanation of
how interrupts are generated when the timers expire.
Register: 0x4A (0xCA)
Response ID (RESPID)
Read/Write
RESPID Response ID [7:0]
This register contains the IDs that the chip responds to
on the SCSI bus. Each bit represents one possible ID
with the most significant bit representing ID 7 and the
least significant bit representing ID 0. The SCSI Chip ID
(SCID) register still contains the chip ID used during
arbitration. The chip can respond to more than one ID
because more than one bit can be set in the Response
ID (RESPID) register. However, the chip can arbitrate
with only one ID value in the SCSI Chip ID (SCID)
register.
7 0
ID
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