RCA 70/700 Series Reference Manual page 127

Table 3-b Operational Word 2 (OW-2)
Bit Function
o
(block
parity)
1
(character
count)
2
(next char.
is block
parity)
3
(skip CCW
in chain)
5,4
(Set/reset
bit LSW F
14)
OW-2
1
Note:
o
1
o
1
o
1
o
00
01
10
11
Note:
------------------------------
Reset the block parity accumulator (LSW D bits
0-8) •
OW~2
bit 0 and OW-l bit 14 must not both be set
equal to 1.
No action.
Reset the character counter (LSW D bits 9-16).
(Reserved for test routines) •
No action.
When permitted by action control, set the "next
character is block parity" indicator (LSW B
bit 13). When transmitting, the CCM will send
its accumulated block parity count to the
terminal (the remote device).. When receiving the
CCM will expect the terminal to send block parity
and will then compare the next character on the
line with the accumulated block parity count.
No action.
When permitted by action control, set the status
modifier bit (LSW E 4).
The next standard device byte (SDB) sent by the
CCM for the line (upon termination of the
cHrrent CCW) will have its status modifier bit
2 set to 1. If the CCW's are command chained,
the processor skips the next CCW and executes
the one after that.
No action.
When permitted by action control, bits 5,4 set
or reset LSW F bit 14 which can affect operational
word access for a maximum of 16 operational word
pairs determined when the CCM is assembled at the
factory. (See figure 1-2.)
No action.
Set LSW F bit 14 to 1.
Reset LSW F bit 14 to
o.
subject to action
control bits
OW-l 2,1,0.
Do not use this bit setting!
LSVv F 14 is not reset upon command ini tiation.
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