Printronix P9012 Maintenance Manual page 241

LATPOL
LRIBMTR+,–
MANLOAD
MA0–8
MCUCNT
MCUREC
MPU . . . . . . . . . . . . . .
MPU+,1
NACK
NBAS
NBG . . . . . . . . . . . . . .
NBGACK
NBLDS
NBR . . . . . . . . . . . . . .
NBUDS
NBUFCLR
NBRDBWR
NBRKRTRP
NCASOL
NCASOU
NCIACK
NCNTCLR
NCTC0–2
NCTRO
NDAV
NDCURD
NDCUWR
NDMACS
NDSTBOUT
NDTEXD
NEMDIS
NENABLE
NEEPROM
NEPROM0
NEPROM1
NEPROM2
Mnemonics
. . . . . . . . . . Latch Strobe Polarity
. . . . . . Left Ribbon Motor + & –
. . . . . . . . Manual Hammer Load
. . . . . . . . . . . . Memory Address 0 to 8
. . . . . . . . . MCU Dot Count Clear
. . . . . . . . . MCU Received DCU Data
Magnetic Pick Up
. . . . . . . . . . . Differential Magnetic Pick Up + & –
. . . . . . . . . . . . Acknowledge
. . . . . . . . . . . . . Address Strobe
Bus Grant
. . . . . . . . . Bus Grant Acknowledge
. . . . . . . . . . . Lower Data Strobe
Bus Request
. . . . . . . . . . . Upper Data Strobe
. . . . . . . . . Buffer Clear
. . . . . . . . Read or Write
. . . . . . . Breaker Trip
. . . . . . . . . . Column Address Strobe Lower
. . . . . . . . . . Column Address Strobe Upper
. . . . . . . . . . Interrupt Acknowledge
. . . . . . . . . Dot Count Clear
. . . . . . . . . . Counter/Timer Chip 0–2 Select
. . . . . . . . . . . Dot Count Read
. . . . . . . . . . . . Data Available
. . . . . . . . . MCU Read DCU Data
. . . . . . . . . MCU Write DCU Data
. . . . . . . . . DMA Chip Select (68B44)
. . . . . . . Data Strobe Out
. . . . . . . . . . Data Transfer Extend
. . . . . . . . . . Memory Disable (Vcc
. . . . . . . . . Enable Front Panel
. . . . . . . . EEPROM Device Select
. . . . . . . . . EPROM 0 Device Select
. . . . . . . . . EPROM 1 Device Select
. . . . . . . . . EPROM 2 Device Select
3.4V)
C–3