how to kludge a 486 PC into thinking it has a video card?

From: Jim Leonard <>
Date: Mon Feb 21 10:33:00 2005

On Mon, Feb 21, 2005 at 04:05:19PM +0000, Jules Richardson wrote:
> I wondered if there was some standard for the BIOS detecting card types
> (write to this port, expect this value back kind of thing) that meant I
> might be able to bodge something with a few LS logic chips, but maybe
> not.

See my previous post re: "time is money" rule. I can't see the
value of spending hours (if not days) working up a one-shot custom
solution when a $1 ISA VGA card will do the trick. The power
consumption of the additional card is negligible. Modern video
cards draw a crapload of power (some require additional molex
connections!) but old ISA VGA cards don't draw enough to be
concerned about. Heat is also not an issue; the 486 and hard drives
will generate ten times more heat than an ISA VGA card.
Jim Leonard        Email:
Like PC games?  Help support the MobyGames database:
Or taste a slice of the demoscene at
Received on Mon Feb 21 2005 - 10:33:00 GMT

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:37:39 BST