User`s manual

Bit(s)
00
01
02
03
04
05-07
Table 3-13
Control Byte Bit Assignments
Transmitter Control Byte
Unused (to effect symmetry)
Send Data Link Escape Next:
When set to one, causes the DVII to fetch the
Data Link Escape
(OLE) character from
secondary register
1010 for the selected line
and transmit it before transmitting the charac-
ter being processed.
Send
BCC:
When set to one, causes DVII to transmit the
block
check character(s) for the selected line
following transmission
of the character being
processed.
Include Character in
BeC:
When set to one, causes the character being
processed
to be included in the block check
character being accumulated for the selected
line. When set
to zero, inhibits inclusion.
Unused
(to effect symmetry)
Next Mode:
Specifies the mode for the next character
to
be transmitted on the selected line. Bit 05 is
the least significant bit.
3-40
Function
Receiver Control Byte
Interrupt PDP-II Program:
When set
to one, causes the DVII to request a
PDP-II program interrupt. The DVII sets the
received character being processed in the
Receiver
Interrupt Character Register and
awaits a reset
of SCR 08 by the PDP-II pro-
gram.
Unused
(to effect symmetry)
Expect BCC:
When set to one, causes DVII to set up for
receiving
and processing the next received
character as the block check character.
Include Character in
BeC:
When set to one, causes the character being
processed
to be included in the block check
character being accumulated for the selected
line. When set
to zero, inhibits inclusion.
Discard
IStore Character:
When set
to zero, causes the character being
processed
to be stored at the receiver current
address in core memory for the selected line.
When set
to one, inhibits character storage.
Next Mode:
Specifies the mode for the next character
to
be received on the selected line. Bit 05 is the
least significant bit.