IBM 3745 Service Functions page 281

IPR isolated pacing response (SNA) LLB local loopback
0
IR interrupt request LLiR low-level interrupt request
IRR interrupt request removed LL2 link level 2 test
ISDN integrated service digital network LNVT line vector table
ISL inbound serial link LOR load with offset register (instruction)
ITB
intermediate text block (BSC) LPDA Link Problem Determination Aid
ITER lac bus terminator LR load register (instruction)
IVT isolation verification tests LRC longitudinal redundancy check
K 1024 (bytes or words) LRI load register immediate (instruction)
KBD
keyboard
local storage
kbps kilobits per second
LRU least-recently used
kg kilogram
LS local storage
kHz kilohertz
LSAR local storage address register
/--
ko
not ok
LSI large scale integration
L
load (instruction)
LSR local storage register (CSP)
LA 1) load address (instruction)
LSS low-speed scanner
2) line adapter LSSD level-sensitive scan design
LAB line adapter board LT local test
LAN local area network LU logical unit
LAP line adapter processor m meter
LAR lagging address register mA milliampere
LCB line control block (storage) MAC MOSS adapter card
LCD line control definer (storage) MAP maintenance analysis-procedure
LCOR load character with offset register Mb megabyte; 1 048 576 bytes
(instruction)
MCA MOSS console adapter card
LCR load character register (instruction)
MCPC machine check/program check
LCS line communication status (storage)
MCC MOSS control card
LDF line description file
MCF microcode fix
---
,/
LED light-emitting diode I
MCT machine configuration table
\~
LERR line error register/driver check
MOOR MOSS data gperand register
LH load halfword (instruction)
MDR miscellaneous data record
LHOR load halfword with offset register
MERR MUX error
(instruction)
LHR load halfword register (instruction)
MES miscellaneous equipment specification
LIB line interface buffer
MFM modified frequency modulation
L1B1
L1C board typ'e 1 for L1Cs 1, 3, and 4
MHz megahertz
LlC line interface coupler card
MICB MOSS interface control block
LlC1 line interface coupler type 1 (card)
MIM
Maintenance Information Manual
L1C3
line interface. coupler type 3 (card)
min minute
LlC4 line interface coupler type 4 (card)
MIO MOSS input/output
LID line interface display
MIOC MOSS I/O control bus
(~"
L1U line interface coupler unit
MIOH MOSS input/output halfword
LlU1 L1C unit 1 for LIes type 1, 3, and 4
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3745 Service Functions
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