The Program Counter is reset to address Z. The next instruction that will be executed will be taken from memory register Z. The original contents of the Program Counter are lost.
Jump and Save Program Counter(5 usec.)
jsp x Y Operation Code 62
The contents of the Program Counter are transferred to the Index Adder. When the transfer takes place, the Program Counter holds the address of the instruction following the jsp. The Program Counter is then reset to address Z. The next instruction that will be executed will be taken from memory register Z.
Skip if Accumulator and Z differ(10 usec.)
sad x Y Operation Code 50
The C(Z) are compared with the C(AC). If the two numbers are different, the Program Counter is indexed one extra position and the next instruction in the sequence is skipped. The C(AC) and the C(Z) are unaffected by this operation.
Skip if Accumulator and Z are the same(10 usec.)
sas x Y Operation Code 52
The C(Z) are compared with C(AC). If the two numbers are identical, the Program Counter is indexed one extra position and the next instruction in the sequence is skipped. The C(AC) and C(Z) are unaffected by this operation.
Non-Indexable Memory Instructions
These instructions have the same word format as the indexable instructions. Since they operate on the index register location, x, they cannot be indexed.
Skip on Negative index(10 usec.)
snx x Y Operation Code 46