Re: Commodore 65 and DIN8 cable

From: Ethan Dicks <*ethan.dicks_at_gmail.com*> Date: Fri, 29 Jan 2016 16:08:15 -0500 Message-ID: <CAALmim=FWL=aDeaaPVtnoVoTE1KtSNDD2kj0C7W4RvancRyC7Q@mail.gmail.com> · ethan.dicks_at_gmail.com

On Fri, Jan 29, 2016 at 3:36 PM, Spiro Trikaliotis
<ml-cbmhackers@trikaliotis.net> wrote:
> I remember two resistor packs on my SCSI drives, but I always thought
> this was because there were more signal lines than they could be handled
> by one resistor pack.
>
> Can anyone confirm that SCSI used two resistor packs, one to ground and
> one to Vcc, with different resistants?

I remember 3 SIPs in my drives and since I don't have any at hand to
test this is from memory, but they were special resistors with a Vcc
and GND on each end and the middle pins were pulled up with 220 ohms
and pulled down with 330 ohms in each SIP, not one SIP for pullup and
one SIP for pulldown.

I still have a baggie of them since they are specifically for SCSI termination.

-ethan

       Message was sent through the cbm-hackers mailing list