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MNEMONIC
OPERAND
WORD TIMES
Plus FF
DESCRIPTION
position 2 goes to the Zero Flip-Flop and bit
position 18 goes to the Plus Flip-Flop. Bits
8, 9, and 10 go to Control Bit FF# 1, 2 and
Parity FF, respectively.
Parity FF
STF
HLT
Contents
of
Memory
M
I
I I xxxxxxxl
2
1
BUFFER SELECTOR INSTRUCTIONS
10
Control Bit FF #2
Control Bit FF #1
Zero FF
I
!Even FF
lxxxxxl I I
9
8
2
1
STORE SPECIAL FLIP-FLOPS.
The con-
ditions of the Plus, Zero, Even, Control Bit
1, Control Bit 2, and Parity Flip-Flops are
stored in M in positions 18, 2, 1, 8, 9, and
10, respectively. (Same as LDF.)
CONDITIONAL HALT.
The DATANET-30
will halt if this instruction is executed when
the INHIBIT HALT switch on the MAINTE-
NANCE panel is in DISABLE position.
There are six (6) Buffer Selector instructions. The Register Transfer FROM R, and the Register
Transfer TO T have already been covered.
LDT
M
DEF
I
NES
I
2
1
1
LOAD T.
The contents of Mare sent to the
Transmit Data Drivers and from there to
whichever channel has been preselected by
the contents of the C Counter. The contents
of M are unchanged.
DRIVE EXTERNAL FUNCTION.
A signal
will
be
sent to those External Function
Drivers which correspond to ones in I. The
signal(s} will actually get to only the Buffer
Unit which has been preselected by the C
Counter. The meaning of each driver varies
with the particular input/ output device.
AND EXTERNAL STATUS LINES TO Z. A
logical "AND" is performed with I (1-10}
and the External Status Lines.
The only
results are the new states of the Plus, Zero,
and Even Flip-Flops.
[ID£1f/A\~~1J~ ~@------------
-79-
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