

* Problem : DE-600's drivers incompitable with COMPAQ contura aero 4/25.
            The error message is " IRQ unavailable, ...".

* Reason  : DE-600's IRQ line equal printer's status port ACK line.
            This line will latch INT when signal level from LOW to HIGH
            whenever IRQ ENABLE or DISABLE. So, The 8259 IRR will queue
            a INT and driver auto detect IRQ will fail.

* Solution : Issue EOI command before auto detect IRQ line.



; ODI for DOS/OS2 drivers v2.56/v2.51
DE600ODI SYS     21504 08-03-94   6:15p
DE600ODI COM     22377 08-03-94   3:48p

; NDIS for DOS/OS2 drivers v2.37
DE600    DOS     10816 08-03-94   6:02p
DE600    OS2     11493 08-03-94   6:06p
DE620IBM NIF       606 08-03-94   5:39p

; IPX SHEll drivers v2.55
IPXDE600 COM     26613 08-03-94   1:05p

; LANsmart driver v2.55
DE-600   DRV     12199 08-03-94   1:48p

; Packet drivers v3.39b
DE600PD  COM      8246 08-03-94   4:40p
DE600PD  SYS      8104 08-03-94   4:40p

