[TRLog] Parallel port keying

Clive Whelan clive_whelan@btinternet.com
Fri, 10 Mar 2000 20:39:41 GMT

Hi list

TR works fine for me using LPT1 to key Radio 1 and LPT3 to key 
Radio 2.

This weekend I wanted to use SuperDuper to run BERU which is 
supported by that prog. ( RSGB contests its raison d'etre)

However it would not key from LPT1 and LPT3 is not supported.
Paul/EI5DI opines that this is because my LPT ports are using 
non standard addresses as below,

LPT1  03BC  No IRQ   Radio 1 key port
LPT2  0378  IRQ7     Printer port
LPT3  0278  No IRQ   Radio 2 key port

whereas SD only supports addresses 0278 and 0378.

The puzzle therefore is why TR manages to use LPT1 with this non 
standard address ( 03BC).

Can anyone explain this to me. Is this another piece of magic in 



Clive Whelan
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