Help in modifying an IBM 0-12meg board for COM3

[Dean Carpenter]

I have an IBM AT running SCO Xenix 2.2.1 with 3 IBM 0-12meg boards in it.
Each board has a serial and parallel port on, each of which can be configured
for 1 or 2.  IE: com1: or com2:

Unfortunately this means that one boards' IO capability is being wasted.
Does anyone know how to modify a board to allow the comm port to respond
to a different interrupt and base address ?

	port	irq	addr
	com1:	4	0x3f8
	com2:	3	0x2f8
	com3:	2	0x3e8

Basically, I want a com3: on the currently unused board.  Hopefully this
would only require some minor surgury, cutting and pasting a couple of
traces.  Hopefully.  Can anyone help ?
-- 
Dean Carpenter				
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