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Signal
NIDO
NIDOO
NIDOI
NID02
NID03
NID04
NID05
NID06
NID07
NID08
NID09
NIDOlO
NIDOll
NID012
NID013
NID014
NID015
NIDOP
NIFC
NIOSS
NMI
NMID
NMYPA
NPAO
NPAI
NPA2
NPDO
NPDOP
NPFW
NPI
NPKPWR
NPOLL
NPSTLED
NPV
NSELFT
NSTLED
NSTS
NSYSPU
NWAIT
POLL
PPON
PST
PWMEN
READ
Motherboard Signal Definitions (Continued)
Definition
110 cage door open (negative true). OR'd with NPDO.
I/O bus input/output data bit 0 (negative true).
110 bus input/output data bit 1 (negative true).
110 bus input/output data bit 2 (negative true).
110 bus input/output data bit 3 (negative true).
110 bus input/output data bit 4 (negative true).
110 bus mput/output data bit 5 (negative true).
I/O bus input/output data bit 6 (negative true).
1i0 bus input/output data bit 7 (negative true).
110 bus input/output data bit 8 (negative true).
110 bus input/output data bit 9 (negative true).
110 hus input/output nata hit
10
(negative true)
110 bus input/output data bit 11 (negative true).
110 bus input/output data bit 12 (negative true).
1/0 bus input/output data bit 13 (negative true).
I/O bus input/output data bit 14 (negative true).
I/O bus input/output data bit 15 (negative true).
110 cage door open (negative true.
110 bus interface clear (negative true).
110 bus data transfer strobe (negative true).
Non-maskable interrupt.
Non-maskable interrupt.
9030/40 Diagrams
9-19
HP-CIO card recognized its address has been asserted (negative true).
110 bus peripheral address bit 0 (negative true).
I/O bus peripheral address bit 1 (negative true).
I/O bus peripheral address bit 2 (negative true).
Panel door open (negative true). OR'd with NIDO.
Panel door open (negative true). Signals SCM board.
Power fail warning (negative true).
Not pop in (negative true). Resets the stack.
Shut down command indicator due to peak power (negative true).
110 bus interface poll (negative true).
Power supply overtemperature (negative true).
Not power valid; all outputs in spec (negative true).
Leading edge causes power supply to send stack into self-test via NSYSPU and NPI
(negative true). Originates on SCM board.
Stack overtemperature (negative true).
110 bus status (negative true).
Not system pop unsynchronized (negative true). Used with NPI to cause stack to
perform a self-test.
110 bus lengthen lOSS (negative true).
110 bus interface poll.
Primary power on; all outputs in spec.
Power supply temperature indicator; connected to FANCTL.
Pulse width modulator enable.
110 bus data direction (positive true; high indicates data to lOP).
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