🚀 go-pugleaf

I've upgraded a ZDS 286 machine (Z248/12) to a Z386/25 using the Heath
upgrade kit.  Now I have the urge to add one and maybe even two more
parallel ports so that this machine can "serve" three printers on a LANtastic
network (it's back in a "printer" room, and seldom has any users).

In digging out spare I/O cards and fooling around, I learned a bit about the
standard IO card in this machine, but not enough.  Even when I believe I have
the second card set to LPT2 and the original card set to LPT1, I get a write
fault on LPT2.  These spare cards always seems to have extra serial ports 
around to confuse things, but I'm fairly certain I've disabled them (the
original two are all I need).  Are there are further tricks I need to know
to get this machine to support multiple parallel ports?  Yes, I've even
set LPT2 to use IRQ=5 and still had trouble.

In working out how to disable those extra serial ports, I found out that
the manual I got describing the jumper settings for the Z I/O card may
have errors in it.  When I set the jumpers so that (according to the book)
serial port 1 is COM1 and serial port 2 is COM2, I get conflicts with the
two serial devices I have (mouse and label printer).  When I return the
jumpers to the state they were in when I received the upgrade kit (which
the books claims sets both ports to COM1), I can use each device without
trouble.  So, maybe the book is just kidding me about the parallel port
jumper settings?  :)  Any advice/war stories appreciated!

"Moby" Dick O'Connor                         djo7613@u.washington.edu 
Washington Department of Fisheries           *I brake for salmonids* 
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"Moby" Dick O'Connor                         djo7613@u.washington.edu 
Washington Department of Fisheries           *I brake for salmonids*