Varian Data 620/i System Reference Manual page 51

3-24
15 14 13 12 11 10 9 8 7 6 5 4 3 2 0
00 5
I
step
I
X B A
I
X B A
I
----~~
L....-_--I
l
Desti~ation
Register
Source Reg i ster
00 Transfer
01 Increment
10 Complement
11 Decrement
10
Execute Unconditional
11
Execute Condition on Overflow Set
Figure 3-7. Register Change Instruction
~
Increment A Register Timing:
17 16 15 14 13 12 11 10 9 8 7 6 5
4
3 2
,-T-!
00
5 111
L._~_
118-bit
I
option
~
Increment B Register
Timing:
17 16 15 14 13 12 11 10 987 6 5
4 3
2
1-'-
!
L_~_
00
5
122
118-bit
I
option
1 cycle
1 0
1 cycle
1 0