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- AX.25 Version 2
- Multi-channel
- TNC FIRMWARE
- (version 2.1)
-
- Copyright 1987, Ronald E. Raikes (WA8DED)
-
- This firmware is identical to the TNC-2 version, with the
- exception of an added 'B' command to display and change the HDLC
- and RS-232 baud rates. The default HDLC baud rate is 1200, while
- the default RS-232 baud rate is 9600. The 'B' command expects a
- parameter consisting of one or two digits: the first represents
- the HDLC baud rate and the second (if present) respresents the
- RS-232 baud rate. The digits used to represent baud rates are:
-
- DIGIT BAUD RATE
- ----- ---------
- 0 no change
- 1 300
- 2 1200
- 3 9600
-
- After changing the baud rate parameter with the 'B' command, the
- new baud rate(s) will become effective on the next power up. The
- 'B' command is actually present in the TNC-2 version, but has no
- effect on tnc operation.
-
- Two versions of firmware are supplied for the PK-87: one
- configured for use with 16K of RAM, the other configured for use
- with 32K of RAM. The 16K version assumes a standard cpu clock
- speed of 2.4576 Mhz, while the 32K version assumes a cpu clock
- speed of 4.9152 Mhz.
-