🚀 go-pugleaf

	- hi; in article, <1323758532snz@nospam.demon.co.uk>,
	        pete@nospam.demon.co.uk commented:
>	    colin@cj4386.demon.co.uk "colin may" writes:
[>	some of this pete's first reply, not differentiated by colin]
>>	    colin@cj4386.demon.co.uk "colin may" writes:
>> 
>> > I am trying to change the base address of the com ports in KA9Q and
>> > its variants. The problem is I need four characters for the hex address, 
>> there
>> > is only space for three. Is there anything I can do? Any help would be
>> > appreciated.
>
>[I replied]
>> Not sure I understand the problem -- are you referring to the DIS
>> front end to set this?  It seems that you might have a somewhat
>> strange setup to require a 4-digit base address; the entry in my
>> autoexec.net is:
>> 
>>   attach asy 0x3f8 4 ppp sl0 4096 576 115200
>> 
>> Can you edit this file and manually enter the address you need?  It's
>> a while since I had to configure anything in this area but have a
>> vague recollection that the base addresses are
>> 
>>   0x3f8 - com1
>>   0x2f8 - com2
>>   0x3e8 - com3
>>   0x2e8 - com4
>> 
>> What COM port are you trying to configure?
>> Pete
>> ------------------
>> High Pete
>> 
>> I am trying to send the output to a com port card with address 0xac00.
 I have
>> put it in the autoexec.net file. When I run up the program it takes out
 one of
>> the zeros at the end.
>
>0xac00 is certainly a non-standard address.  Having taken a very brief 
>glance at the KA9Q (GremNOS) source I didn't spot any obvious reason 
>for this truncation -- if that is what it is.  Whereabouts are you 
>seeing 0xac0 reported?
>
>The only thing I spotted that *might* be causing the problem is that 
>the code tries (rightly or wrongly) to parse this value into an 'int', 
>i.e. a signed 16 bit quantity, and 0xac00 would be negative.  Whether 
>this would have a dtrimental effect I don't know.
>
>Maybe someone else can help, but I'll try to take a deeper look this 
>evening.

	- out of the depths of my ignorance on the subject, may i
	ask what may be a very stupid question:

	- might it not be possible to change the 0xac00 address of
	the com port card to one falling within the range that the
	software seems to expect ?

	(the only other possible "gotcha!"s i've come across wrt the
	line probably won't apply here - the figure after the com N
	address is the irq, which can clash with that assigned to
	something else [a]; and the penultimate figure specifies the
	packet size, which at one time in the mists of history we on
	dial-up, i dimly remember, were advised to twiddle with - but
	i don't see how this latter could possibly affect the address.)

	- love, ppint.

	[a] - and not always to an obvious "thing", neither

	[drop the "v", and change the "f" to a "g", to email or cc.]
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- keith f. lynch on rec.arts.sf.fandom 20/3/2010 (3/20/2010 for merkins)