Specifications

B–5
Abbreviations, Acronyms, and Signal Mnemonics
NMFPE Multi Function Peripheral (68901) Device Enable. . . . . . . . . . .
NOHSTWR No Host Writes Allowed. . . . . . . .
NOVRAM Nonvolatile Random–Access Memory. . . . . . . . .
NPAPO Paper Out Switch. . . . . . . . . . . .
NPAPOSW Paper Out Switch. . . . . . . . .
NPCLOCK Serial Shift Clock for Front Panel. . . . . . . . .
NPE No Paper Empty. . . . . . . . . . . . . .
NPLAO Platen Open Switch. . . . . . . . . . .
NPLOAD Load Switch Data into Shift Register. . . . . . . . . .
NPLAOSW Platen Open Switch. . . . . . . .
NPULEN Paper Puller Enable. . . . . . . . . .
NRAM RAM Bank Device Select. . . . . . . . . . . .
NRESET Reset. . . . . . . . . .
NRIBEN Ribbon Tense. . . . . . . . . .
NRIBFLT Ribbon Fault. . . . . . . . . .
NRIBM Ribbon Move. . . . . . . . . . .
NRIBMOV Ribbon Move. . . . . . . .
NRST Reset. . . . . . . . . . . . .
NRUN1,2 Enable Paper Feed 1, 2. . . . . . . . . .
NSTAT Releases NUD, HRS, DCMOD from Reset State. . . . . . . . . . . .
NSWITCH Switch Depressed. . . . . . . . .
NTOF Top of Form. . . . . . . . . . . . .
NTXSTB DMA Transmit Data Strobe. . . . . . . . . .
NUD Upper Hammer Drive. . . . . . . . . . . . . .
NUDTOSPD Shuttle Up to Speed. . . . . . .
NVRAM Nonvolatile Random–Access Memory. . . . . . . . . .
OD Over Drive. . . . . . . . . . . . . . .
OE Output Enable. . . . . . . . . . . . . . .
OVEREN Overrun Detect Enable. . . . . . . . . .
P1–P8 Data 1 to 8. . . . . . . . . . . . .
PAL Programmable Array Logic. . . . . . . . . . . . . .
PAPIN Paper Instruction Detected (Parallel). . . . . . . . . . . .
PAREN Parity Check Detect Enable. . . . . . . . . . . .
PARER Parity Error Detected (Parallel). . . . . . . . . . . .
PARXFER Parallel DMA Data Transfer. . . . . . . . .