GPIB ASIC Reference Manual Errata
4
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write the status byte (STB) to the SPMR with the appropriate
value for RQS.
If STBO IE = 0, to request service, issue the reqt auxiliary
command. Then, write the status byte (STB) to the SPMR. When
you write to the SPMR, write 0 to bit 6 (the rsv bit). The TNT4882
asserts and unasserts the rsv signal according to the set rsv state
machine that is described in the IEEE 488.2 standard.
After the CIC serial polls the TNT4882, you must issue the reqt
auxiliary command and write to the SPMR again to request
service. If you want to stop requesting service before a serial poll
occurs, issue the reqf auxiliary command.
•
Page 4-14, in the
Responding to Serial Polls
section, second
paragraph, next-to-last sentence, replace the existing text,
to the SPMR (write 0 to bit 6)
with this new text,
to the SPMR with the appropriate value for RQS
