Digital Equipment DECmpp 12000/Sx 100, Руководство по обслуживанию оборудования

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2.3 Indicators
Table 2–5 PVME Indicator Descriptions
Signal Abbreviation Description
Vcc VCC ON: +5 V power supply is ON
AS1_ AS1 ON: VMEbus AS (address strobe) is true
vmeDS VDS ON: VMEbus DS (data strobe) is true
DTACK_ DAK ON: IOCTLR generated DTACK is true
bIACK ACK ON: VMEbus IACK (interrupt acknowledge) is true
IACKCYC CYC ON: IOCTLR is responding to an IACK VMEbus cycle
vmeIACKIN_ VAKI ON: VMEbus interrupt acknowledge daisy chain-in is true
vmeIACKOUT_ VAKO ON: VMEbus interrupt acknowledge daisy chain-out is true
vmeLBGIN_ LBGI ON: Local VMEbus grant daisy chain-in is true
dmaLBBGOUT_ LBGO ON: Local VMEbus grant daisy chain-out is true
vmeRBGIN_ RBGI ON: Remote VMEbus grant daisy chain-in is true
dmaRBGOUT_ RBGO ON: Remote VMEbus grant daisy chain-out is true
dmaMASTER DMST ON: IOCTLR is dma bus master
dmaBR_ DBR ON: IOCTLR is asserting request for VMEbus
dmaBBSY_ DBSY ON: IOCTLR is asserting VMEbus Busy
vmeDTACK_ DDAK ON: VMEbus DTACK is true
chDXFR_ DXFR N/A — May be ON or OFF (value is X)
1
chSTALL_ STAL N/A — May be ON or OFF (value is X)
chERR ERR N/A — May be ON or OFF (value is X)
queueEMPTY_ QMTY N/A — May be ON or OFF (value is X)
queueFROZ QFRZ N/A — May be ON or OFF (value is X)
babWAIT_ BWAT ON: IORAM is holding off access; address has crossed page boundary
babWRT_ BWRT ON: IORAM is performing a write cycle
refGNT_ BREF ON: IORAM is performing a refresh cycle
vmeGRANT_ VGNT ON: VME Interface has been granted IORAM access
chGRANT_ CGNT N/A — May be ON or OFF (value is X)
rioGRANT_ RGNT ON: RIO Interface has been granted IORAM access
babSLOWDEV_ BSLW ON: Slow VME device has accessed IORAM
1
N/A = not applicable to PVME
2–14 DPU Controls and Indicators