Re: Apple SCSI Card

[David Wilson <mcs6502@gmail.com>]

On Mar 3, 6:09 am, schmidtd <schmi...@my-deja.com> wrote:
> On Mar 2, 11:51 am, Rich <Rich11...@gmail.com> wrote:> The question is, does anybody know how to set the jumpers for the card
> > SCSI ID?  It's working fine right now, but I'd like to know how to set
> > them.  I've searched the web and the usual A2 resources, but only can
> > find manuals for the High Speed SCSI card.
>
> Hmmm.  Maybe your list of usual suspects needs to be updated?  1000BiT
> has the manual here:http://1000bit.net/support/manuali/download.asp?id=638
> I leafed through the manual and found a reference to the card
> "priority," which is the jumper block numbered from 9 through 16; 9 is
> the highest priority.  They never admit to a mapping between priority
> and ID number, exactly; but it seems like this:
> ID/Jumper
> 7/9
> 6/10
> 5/11
> 4/12
> 3/13
> 2/14
> 1/15
> 0/16

That mapping appears to be the opposite of what Apple documents.

The following information is found in the "Apple II SCSI Card
Technical Reference Manual" (APDA #A2G0029) on page 3:

"The Apple II SCSI Card's SCSI ID number is set by positioning a
jumper on a strip of pins. With the jumper positioned across pins 1
and 16, the SCSI card's ID number is set to 7. With the jumper across
pins 8 and 9, the SCSI card's ID number is set to 0. For most
applications, the SCSI card should be set to ID number 7 (jumper
across pins 1 and 16)."

The pin numbers for IDs 1..6 are left as an exercise for the
reader :-).