🚀 go-pugleaf

I have the latest dosemu running in Mandrake7.2.   I would like to get the
serial ports com1 and com2 working.  I have edited dosemu.conf to assign
com1 and com2 and have the irq running (I think)

dosemu.conf edits:

$_irqpassing = "3 4"          for IRQs 3 and 4

$_com1 = "/dev/cua0"       for com port 1
$_com2 = "/dev/cua1"       for com port 2

If I use a dos port testing program PORTS.EXE it returns info that com1 and
com2 are assigned and have the correct addresses and irqs. (No LED activity
on port tester when this is run)

But when I run any dos program (under dosemu) that uses or tests com1 and
com2 I get nothing. ie.  I have a com port tester (with leds) that shows com
port activity.. Nothing shows..

The same ports on this computer work fine in msdos.

I also get port (led) activity during linux booting when it tests for the
ports.. So I know linux sees the ports.

I assume I do not have something configured correctly in dosemu.  Can anyone
help?

Thanks
Sawadee