Specifications

B–1
Abbreviations, Acronyms, and Signal Mnemonics
B Abbreviations, Acronyms, and Signal
Mnemonics
Signal mnemonics with initial letter “N” are negative true, all others are
positive true.
ACRONYM/ DEFINITION
MNEMONIC
+5VHL Isolated +5V from –12V. . . . . . . . . . . .
ACK Acknowledge. . . . . . . . . . . . . .
AIRFLT Cooling Fan Fault. . . . . . . . . . .
ASIC Application–Specific Integrated Circuit. . . . . . . . . . . . .
Assy Assembly. . . . . . . . . . . . . .
BA0–15 Buffered Address 0 to 15. . . . . . . . . . .
BD0–7 Buffered Data 0 to 7. . . . . . . . . . . .
BFC0–2 Function Code 0–2. . . . . . . . . . .
BHSC Buffered Hammer Shift Clock. . . . . . . . . . . . .
BIORQ Input Output Cycle. . . . . . . . . . . .
BLR Blower. . . . . . . . . . . . . .
Btn Button. . . . . . . . . . . . . . .
BUSRQ DMA Bus Request. . . . . . . . . . .
BUSY Busy. . . . . . . . . . . . .
BUZZ Buzzer On. . . . . . . . . . . . .
BR/NW Buffered Read/Not Write. . . . . . . . . . .
CAS Column Address Strobe. . . . . . . . . . . . . .
CDEN Control Code Detect Enable. . . . . . . . . . . .
CDIR1,2 Ribbon Color Direction Sense. . . . . . . . . . .
CLK Clock. . . . . . . . . . . . . .
CNTLCD Control Code Detected (Parallel). . . . . . . . . .