question - how to test DMA on peecees right way?

From: Doug Yowza <yowza_at_yowza.com>
Date: Tue May 12 19:02:00 1998

[why does this thread exist?]

On Tue, 12 May 1998, Tony Duell wrote:

> The problem is that the i80286 can go from real mode to protected mode,
> but not back again. At least not without a hardware reset.
>
> Now, the keyboard controller output port bit 0 will, if pulsed low, reset
> the microprocessor.

Wasn't there another trick? Tripple-fault will also cause a hardware
reset on most mobo's, and it's probably faster than diddling the keyboard
controller.

-- Doug
Received on Tue May 12 1998 - 19:02:00 BST