RE: Needep-Switch Functionality on High Speed SCSI Card

[bpvh@shell1.msn.fullfeed.com (Bradley VonHaden)]

edelman@rice-chex.ai.mit.edu (Joe Edelman) wrote:

>I just bought an Apple high-speed SCSI card, without the
>manual and I'm having a bit of difficulty getting it to work
>with my system.
>
>There are 4 dip-switches on the card, can anyone tell me what
>they do?

On the Apple HS SCSI card there are four switches, which are used as
follows:

      1 - DMA Enable (ON/closed = DMA done, OFF/open = DMA not done)
      2 - SCSI ID bit 0
      3 - SCSI ID bit 1
      4 - SCSI ID bit 2

ID Zero would be switches 2,3,4 off (open), ID 7 would be 2,3,4 on
(closed). ID 1 would be 2 on, three and four off, etc. (standard
binary) ID two would be switchs 2,4 off, 3 on.

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