AMD AMD5K86 - BE7-BE0 (Byte Enables)

AMD~
1 8524B/O-Marl 996 AMD5~6 Processor Technical Reference Manual
5.2.7 APCHK (Address Parity Check)
Summary
Driven
Details
Signal Descriptions
output
The processor asserts APCHK if an even-parity error occurs on
A31-A5 during an inquire cycle.
The processor drives APCHK for one clock, two clocks after
system logic asserts EADS with an inquire address.
APCHK is driven under the same conditions in which EADS is
sampled: See the description of EADS on page 5-59.
System logic can use APCHK to initiate a remedy for the error.
Typical PC systems assert an interrupt such as NMI if a parity
error is detected.
See the description of parity error determination for the AP
input on page 5-32. Systems that do not implement address par-
ity checking should ignore APCHK.
5-JJ