GE DATANET-30 Programming Reference Manual page 25

CBl CB2
CB3 (Parity)
Buffer Selector
Receive Data Lines 19 20 21
Instructions
BCO Y09
Resets only Y06
NIS
NIS 8 NIS
9
NIS 0
DIF DIF 8 DIF 9 DIF 0
LDF Z08 Z09 ZlO
STF
Z08 Z09
ZlO
The paper tape reader also uses the control bits in a special way when reading paper tape
under program control.
The transmit data lines use the control bits as follows.
18
1
Transmit Data Lines
Parity Network
When transferring data to a word buffer or a CIU, where a parity bit is needed, put a word in
the B-register, set bits 19 and 20 as required (DIF instructions) and when a Register Transfer
instruction is executed, the proper parity will go to line 21.
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