HP 3000 III Series Manual page 212

System Microcode
Table 5-7. Special Field Code Definitions (Continued)
No cperation
The Special field code pop moves
the stack elements up one location
such that the second element of the
stack (S minus one) becomes the top
element (8), etc. The previous top
of stack element is lost. When ex-
ecuted, this is accomplished by de-
crementing the SR Register and in-
crementing the Namer Register.
Refer to para 5-4.
01000
10111
01111
pop 10111
Nap
LBF
(Low Bi t to
Flag 2)
INSR
(Increment SR)
I----------~------·l--
I --_._-_.__.__._-----------------,,
I I
Fie ld
I I
I
Label and Name
I
Code
1
Description
I
1 . -_. - I__
~_-_.
l__. . . . . .
._~
__- I
I
The Special field code INSR incre-
I
ments the content of the SR Regist-I
er by a count of one. I
I
The Special field code LBF trans-
I
fers the content of U-Bus bit 15 tol
the Flag 2 F F •
I
,
I
~
paPA 10110
(Pop se t ting CCA)
The Special field code paPA func-
tions the same as Special field
code pop with the addition that the
condition code is set to CCL (01)
if the T-Bus word is less than ze-
ro, to CCE (10) if the T-Bus word
is equal to zero, or to CCG (00) if
the T-Bus word is greater than zero
SCRY
(Set Carry Bi t)
SDFG
(Set Dispatcher
Flag)
SFI
(Set Flag 1)
SF2
(Set Flag 2)
SF3
(Set Flag 3)
10100
00101
10011
10000
00011
The Special field code SCRY sets
Carry in the Status Register.
The Special field code SDFG se ts
Dispa tcher Flag (bi t 12 of Inter-
rupt Sta t u s Re g i s te r CP Xl) •
The Special field code SFI sets CPU
Flag 1 FF.
The Special field code SF2 sets CPU
Flag 2 FF.
The Special field code SF3 sets CPU
Flag 3 FF.
-
-----_._~----_._.
-----'
----._---_._--_._---_
....
---_.
__
.
__
..
_--_._--
5-32