revised 970105

Jumper settings for GFC FAXMODEM modems

[..] jumper closed
 ..  open

The only proven jumper setting we are sure of for this modem
is for COM2 IRQ3 which is:

COM2:
WAIT1  ..
WAIT0 [..] <--we have no clue what this does
 IRQ2  ..
 IRQ3 [..] <--we are guessing this determines IRQ
 2or4 [..]
 1or3  ..
 2or4 [..]
 1or3  ..
 3or4  ..
 1or2 [..]

Here are jumper settings for other hypothesized settings:

COM1:
 2or4  ..
 1or3 [..]
 2or4  ..
 1or3 [..]
 3or4  ..
 1or2 [..]

COM3:
 2or4  ..
 1or3 [..]
 2or4  ..
 1or3 [..]
 3or4 [..]
 1or2  ..

COM4:
 2or4 [..]
 1or3  ..
 2or4 [..]
 1or3  ..
 3or4 [..]
 1or2  ..

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