🚀 go-pugleaf

I have a PC card that requires the use of h/w int 2-5 (one of)
and reading/writing to several ports.  I want to port the DOS
app that uses it to Windows.  I don't have the DDK. 

I read an article in MSJ a while back about "embedded device
drivers" in windows apps.  But these drivers can only access
devices generating ints >= 30h. I'm thinking about the following
approach to get it to work...

        ----------------------------
Windows|   Windows App int. to DOS  |
        ----^-----------------------
           r/w      | int > 30h  ^
            |       V            | int > 30h
        ----V------------------------
DOS    | Data Buf | Dos device driver|
        ----^------------------------
            |       ^
         port i/o   | int 
            |       | 2-5
        ----V-----------------------
Device |          PC Card           |
        ----------------------------

Basically the card interrupts a DOS device driver or TSR (loaded at DOS
startup) which will call a s/w int that windows will grab.  Windows
will then read the appropriate data from the DOS data buffer area.

Is this workable?  If so, does anyone know of a skeleton that I can
use for this to save myself starting from scratch?   How can I get 
windows to find the location of the DOS data buffer area to read/write
to/from it?

Is there a better solution?

--
Thanks,
,----------------------,------------------------.---------------------,
| Karl Tracy Blomquist | E-MAIL: tracyb@bnr.ca  | Fax: 1-613-765-4018 |
| Consultant           |                        | Ph:  1-613-765-4886 |
`----------------------'------------------------'---------------------'
| Bell-Northern Research, P.O.Box 3511, Stn C, Ottawa, Ont., K1Y-4H7  |
`---------------------------------------------------------------------'