Re: How to debug inside the BIOS and/or interrupt?

On Jul 5, 7:15 am, NoS...@[EMAIL PROTECTED]
 (Bob Masta) wrote:
> SB data is normally transferred via
> DMA (except for a crappy old 8-bit mode), and the interrupt is
> just to tell you that the DMA block is done.

This just dawned on me:  My SB uses DMA 1... and I think the hard disk
controller does too.  So the SB IRQ interrupting a disk transfer
already in progress is probably what is locking the machine up (DMA is
probably getting dorked with mid-transfer).

You wrote DAQARTA, which took data in from a SB and wrote it to
disk... how did you get around this problem?  Does your program try to
use both devices and/or DMA channels simultaneously?