Re: Sandwich II SCSI dip settings

["David Wilson" <mcs6502@gmail.com>]

golfrock wrote:
> Does anyone know the meanings for the different settings on the dip
> switches on a Sandwich II fast SCSI card?  It has 1-4.  It works fine
> with 1001.  I just got a "new" one that was set to 1010 and the machine
> would not boot.  Changed to 1001 and all is well.  Just would like to
> have the specs.

Until I took a look at my card I had no idea what a Sandwich II was.

Switch 1 = DMA mode (DOWN = default) or pseudo-DMA (UP/OPEN)
Use pseudo-DMA in an Apple II with an accelerator that does not support
DMA (eg Zip Chip in a IIe).

Switches 2-3 = SCSI ID of the host adapter (DOWN DOWN DOWN = default
(7))

Interestingly my Reference manual does not give the order of these
three switches.
UP DOWN DOWN could equal 4 or it could mean 1.

What SCSI ID was the HDD you had attached when the system would not
boot?