RCA 70/46 - Page 66

No
Set Condition Code to 3
ond Terminote Test Device
Instruction
Next Instruction
2
3
4
5
6
Start
Is Privileged Mode
Bit Set to Zero?
Yes
Is Specified Selector
Channel on System?
Yes
Is Specified Channel:
1. Busy Selector Channel
2. Selector with Interrupt
Pending
Multiplexor in Burst
Reset the Channel Status
Byte and the Standard
Devi ce Byte to Zero
Send Device Address to
All Trunks on
Specified Channel
No Is the Specified
.------------1 Device Control Electronics
Set Condition Code to 3
ond Terminate Test Device
Instruction
Next Instruction
7
8
9
Operable?
Receive Standard Device
Byte from Devi ce and
Set Condition Code
Is the Condition Code
Set to 1?
No
Terminate Test
Device Instruction
Next Instruction
Yes
Yes
Figure 1. Functional Logic of Test Device Instruction
57
Input / Output Operation
Set Condition Code to 2
and Terminate Test
Device Instruction
Next Instruction
Store Standard Device
Byte in S~ratch Pad
Memory
Terminate Test
Device Instr uction
Next Instruction