NonStop S-Series Server Description Manual (G06.27+)

TNS Instruction Set Definition
HP NonStop S-Series Server Description Manual—520331-004
C-5
Symbol Definitions
Indivisible On 'turn off all external interrupts'. Exceptions
for page fault, overflow, IFAIL will still be
processed.
INQ[0:1,0:15].
<0:15>=
interprocessor bus in queues
INTA.<0:15> = interrupt register A
INTB.<0:15> = interrupt register B
IOC = sysstack[ %2000:%3777 ]
IOSPAD = IOC scratchpad registers (IOC cache)
IOSPADXLAT = translate and move the IOC entries
IPDS interrupt environment’s process data space
K
K simulated carry flag
L
Lx.<0:31> local stack pointer, location of the current TNS
stack marker.
LS ENV.<4>
M
MASK.<0:15> = interrupt mask register
mem[sas,la]= xmem[ sas+la ]
movestep= if I.<9> then -1 else 1
MYEXTCPU= sysstack[ %154 ]:
<8:11> - Cluster number
<12:15>- Processor number
N
N = simulated Negative condition code, and/or
ENV.<11>
norm(x)= while x.<0> <> 0 do {x:=x'<<'1; exp:=exp-1}
O
OUTQ[0:15].<0:15>= interprocessor bus out queue
overflow= V:=1;
if "divide by zero" then Z:=1
else if exp.<0>=1 then N:=1
else Z:=N:=0
P
P.<0:15>= Simulated TNS program counter,
word location of current instruction + 1
Px.<0:31>= Simulated TNS program counter,
byte location of current instruction + 2
PDS process data space
PHYSEG = physical page to (abs segment, or lock count)
table
Table C-1. Definitions of Symbols (page 5 of 9)
Notation Description