Skip on ZERO Switch(5 usec.)
szs Addresses 10, 20, ... 70
If the selected Sense Switch is ZERO, the Program Counter is advanced one extra position and the next instruction in the sequence will be skipped. Address 10 senses the position of Sense Switch 1, Address 20 Switch 2, etc. Address 70 senses all the switches. If 70 is selected all 6 switches must be ZERO to cause the skip to occur.
Skip on ZERO Program Flag(5 usec.)
szf Addresses 0 to 7 inclusive
If the selected program flag is a ZERO, the Program Counter is advanced one extra position and the next instruction in the sequence will be skipped. Address 0 is no selection. Address 1 selects program flag one, etc. Address 7 selects all programs flags. All flags must be ZERO to cause the skip.
The instructions in the One Cycle Skip group may be combined to form the inclusive OR of the separate skips. Thus, if address 3000 is selected, the skip would occur if the overflow flip-flop equals ZERO or if the In-Out Register is positive. The combined instruction would still take 5 microseconds.
Operate Group(5 usec.)
opr Y Operation Code 76
This instruction group performs miscellaneous operations on various Central Processor Registers. The address portion of the instruction specifies the action to be performed.
Clear In-Out Register(5 usec.)
cli Address equal 4000
This instruction clears the In-Out Register.