1 CH AND Cl
B~ANCHiNG
A.
CH and CL
=
0000 or 000 I
00
-
0 0
Signifies forced branching. If CH and CL are zeros, it forct,"'; a branch to the next micro-
word identified by 00. If CH and CL are 01, it forces a branch to the next microword iden-
tified by 01.
B. CH = 0011 through 0110 and CL = 0011 through 0111 and 1111
00
-
STI SV·I
01
4'--
10
....-
1 1
'---
This signifies conditional branching. If the Status In Line (STI) is up and the Service In
Line (SVI) is down, this condition forces a branch to the microword identified by 10.
IBM Confidential
17

C. CH
=
0111 through IIII and CL
=
1000 through 1110
00
-
SO G7
01
~
10
r-
1 1
-
This signifies branching on latches in registers. If the S register 0 bit and the G register 7 bit
are on, this condition forces a branch to the microword identified by 11.
D. CL
=
0010
703
805
-
CA08-W
This signifies a module change. This condition indicates that the address of the next micro-
word is in the 800 block.
18
IBM Confidential