3c503 etherus interruptus

Santiago Newbery newbery at stout.atd.ucar.edu
Sat Feb 9 10:11:48 AEST 1991

In article <1991Feb8.162601 at epic.bellcore.com>, karn at epic.bellcore.com
(Phil R. Karn) writes:
|>In article <1991Feb7.144231.1699 at ux1.cso.uiuc.edu>,
|>klefstad at ux1.cso.uiuc.edu (Sue Klefstad) writes:
|>|> The 3C503 defaults to interrupt 3.  If you're using a
|>|> in your config.sys, you'll need to specify interrupt 2 there:
|>|> DEVICE=ETH503.SYS /I:2
|>Be careful. Although it is not widely documented, VGA cards (and I
|>believe EGA) use IRQ2 to signal vertical retrace.
The above is true, however most current VGA cards (Orchid Pro Des II,
Video 7 VGA 1024i, etc.) come with IRQ 2 disabled by default.
As stated in their doc, it only needs to be enabled (via jumper/switch)
for *old* S/W that requires the vert. retrace interrupt.


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