PK-88 OPERATING MANUAL
APPENDIX F
F - 2
PK-88 - 160
The default setting for bits 0-6 is noted below:
Bit 0 is set to 1, bit 1 is set to 0, bit 2 is set to 1, bit 3 is set to 0, bit 4 is set to 1, bit 5 is set to 0,
and bit 6 is set to 0. The following chart indicates the same information.
Bit Position
7 6 5 4 3 2 1 0
Setting
0 0 0 1 0 1 0 1
Looking at just the setting row in the chart, the binary number 00010101 becomes evident. The
binary number 00010101 equals the decimal number 21, and the hexadecimal equivalent is $0015
hence the reason the default setting for CUSTOM is $0015.
Let us say, for example, that you have decided that as a MARS operator you want to change bit 4
from the default of 1 to a setting of 0. The chart below reflects this change.
Bit Position
7 6 5 4 3 2 1 0
Setting
0 0 0 0 0 1 0 1
This results in a binary number of 00000101 which is a decimal number 5. The hex equivalent is
$0005, there fore, to change bit position 4 to a setting of zero, leaving the others unchanged, will
require a CUSTOM setting of $0005.
The CUSTOM command will accept arguments in decimal format. For example, the default is
$0015, however if you enter decimal 21, the PK-88 will accept this. The PK-88 will display on the
screen the hexadecimal equivalent.
Using Hex Notation
Observe some simple rules if you choose to reassign parameter values in hexadecimal numbers.
Begin the number with a '$'. The "digits" of a hex number represent multiples of powers of 16.
The values from 10 to 15 are represented by the letters A through F. The letters can be typed in
upper or lower case. For example:
Decimal Number
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 . . .
Hex Numbers
0 1 2 3 4 5 6 7 8 9 A B C D E F 10 . . .
$1B = (1 × 16) + (11 × 1) = 27 (decimal)
KISS
ON|OFF
Mnemonic:
KI
Default: OFF
Parameters:
ON
The PK-88 operates as a KISS TNC.
OFF
The PK-88 operates as a normal AX.25 Level 2 TNC.
Turning KISS ON now has a temporary effect on several other parameters. KISS ON temporarily
forces HPOLL OFF, PPERSIST ON, RAWHDLC ON and HOST ON. RAWHDLC ON temporarily forces
CONMODE TRANS, TRACE OFF, HID OFF and no BEACON. HOST ON temporarily forces 8BITCONV
ON, AWLEN 8, PARITY 0 and no software flow control.
This change makes going into the KISS much easier!
To exit KISS, you must type three
[^C]
, all within one second. Also, no data can be received by
the PK-88 during this operation or it will not work, and you will remain in KISS mode.
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