Control Data Cyber 170 State Hardware Reference Manual page 165

PP lnput/Output Instructions
PP Input/Output Instructions
The PP input/output instructions (table 4 - 2 2 ) direct activity
on
the I/o
channels. They select an external device and transfer data to or from that
device. The instructions also determine whether a channel or external device
is available and ready to transfer data. The preparatory steps ensure that the
channels carry out an orderly data transfer. Each external device has a set of
external function codes that the PP uses to establish operation modes, and to
start and stop data transfer. The devices can also detect. certaid errors that
are indicated to the controlling PP.
Table 4 - 2 2 . PP Input/Output Instructions
Opcode Format Instruction Mnemonic
- -
Test and set channel c flag
Clear channel c flag
Input to A from channel
d
Input A words to m from channel d
Output from A on channel d
Output (A) words from m on channel
Activate channel d
Deactivate c h a ~ e l d
Function A on channel d
Function m on channel d
SCF m,&OB+c
CCF c
IAN d
IAM m,d
OAN d
d
OAM m,d
ACN d
DCN
d
FAN
d
FNC m,d