PK-232 MBX Operating Manual - N3UJJ

PK-232 OPERATING MANUAL
COMMAND SUMMARY
PASSAll ON/OFF
Mode: Packet
Parameters:
Default: OFF
Host: PK
ON
OFF
-Your PK-232 will accept packets with valid or invalid CRCS.
-Your PK-232 will accept packets with valid CRCs only.
PASSALL turns off the PK-232's packet error-detecting mechanism and displays
received packets with invalid CRCS. PASSALL is normally turned OFF (default);
which ensures that packet data la error-free by rejecting packets with invalid
CRC fields. When PASSALL is ON, packets are displayed, despite CRC errors. The
MHEARD logging is disabled since the call signs detected may be incorrect.
PErsist “n" Default: 63
Mode: Packet
Host: PE
Parameters:
“n" — 0 to 255 specifies the threshold for a random attempt to transmit.
The PERSIST parameter works with the PPERSIST and SLOTTIME parameter to achieve
true p-persistent CSMA (Carrier-Sense Multiple Access) in Packet operation.
PK [“n”]
Mode: All
Parameters:
Default: none
Host: PK
"n" - a hex number used to access the PK-232's memory and I/O
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.
PK-232 RAM locations are $8000-$FFFF. ROM begins at $0000. This command is used
primarily as a programmer's aid and is not needed for normal PK-232 use.
PPersist ON/OFF
Mode: Packet
Parameters:
Default: ON
Host: pp
ON The PK-232 uses p-persistent CSRA (Carrier Sense Multiple Access).
OFF The PX-232 uses DWAIT for TAPR-type 1-persistent CSMA.
When PPERSIST is ON (default), the PK-232 uses the PERSIST and SLOTTIME
parameters for p-persistent CSMA instead of the older DWAIT CSMA procedure.
4/91 A-63
From The N3UJJ.COM Document Library