Specifications

yet
again, and
another empty
packet
would have
been sent. This happens because
pressing
(RETURN)
norrnally forces
a
packet
to be sent. However,
by inserting a
(CTRL-V)
before a
(RETURN),
you
disable
the function
of
(RETURN)
in the
Command mode and allow it to
be
used in
your
outgoing
text
to
act
as a
"real" (RETURN).
So, the PASS
character
"hides"
the next
character's function.
PASSAII
ONOFF
Mode:packet
OFF Your PK-96
will accept
packets
with valid CRCs orzly.
ON Your PK-96
will accept
packets
with valid
or invalid CRCs.
PASSALL
turns
off the
packet
error-detecting
control
and displays received
packets
with invalid
CRCs.
PASSALL
is normally turned
OFE to
ensure
that
data is eror-free by rejecting
packets
with invalid
CRC
fields. With PASSALL
ON,
packets
are displayed
despite CRC
enors.
MHEARD
logging is
disabled since the
call signs detected may be inconect.
Default; OFF
Host:PX
PErsist
n
Mode:
packet
"n"
0 to 255
specifies the threshold for
a random attempt to transmit.
PERSIST works
with PPERSIST
and SLOTTIME to achieve true P-persistent
CSMA
(Carrier-Sense
Multiple Access)
in
packet
operation.
Default:
63
Host: PE
PKIn)
Mode:
packet
A hex number
used to access the PK-96's memory
and VO locations.
PK
(Peek/Poke)
permits
access to memory locations. To
use the
PK
command:
.
Set the memory
address into the ADDRESS
command.
.
Use
the PK
command without
arguments to read that memory location.
.
Use
PK
with one argument
O-$FF to write to that memory location.
RAM
locations
are
$8000-$FFFF.
ROM begins
at
$0000.
This
command is
primarily
a
programmer's
aid
and is not needed
for normal PK-96
use.
Default: none
Host:
PK
PPersist
ONOFF
Mode:packet
ON The PK-96
uses
P-persistent
CSMA
(Canier
Sense Multiple Access).
OFF The PK-96
uses DWAIT for TAPR-type l-persistent
CSMA.
With PPERSIST
ON, the PK-96 uses the PERSIST
and
SLOTTIME
parameters
for P-persistent CSMA
instead of
the older DWAIT CSMA
procedure.
When your computer has
queued
data for transmission, the PK-96 monitors
the
DCD signal from its mo-
dem. When
the channel clears, the PK-96
generates
a
random
number between 0 and 255. If this
number
is
less-than
or
equal
to PERSIST, the PK-96
transmits all the frames
in
its
queue.
If the random
number is
greater
than
"P",
the PK-96 waits .01 x
SLOTTIME
(seconds)
and repeats the attempt.
Default:ON
Host:
PP