Re: D9060 with OpenCBM

From: didier derny <>
Date: Sun, 20 Aug 2017 22:17:44 +0200
Message-ID: <>
one of the Problem of connecting SASI to SCSI is termpower...

termpower PIN on a SCSI is connected to +5v  (some controller have a fuse)

the same PIN on SASI it's not connected or connected to GND so 
connecting SASI to SCSI often produce a short circuit

the termpower has to be disabled on the controller, or the cable modified

On 20/08/2017 21:53, Ethan Dicks wrote:
> On Sun, Aug 20, 2017 at 8:17 AM, smf <> wrote:
>> On 20/08/2017 09:59, didier derny wrote:
>>> this board: may
>>> work too
> Reading up on it, the SCSI2SD appears to now support internally
> mapping ID 0 LUN 1 as ID 1, so that part might be OK.
>> However like all good standards people ignore the details of the
>> specification & implement their device to work with other peoples
>> implementations.
> One thing that's different about the D9060/D9090 vs "modern" machines,
> is block size.  256 bytes per block, not 512.  Any new SCSI/SASI
> device would have to support, at least in some fashion, the low-level
> formatting routines (or at least respond in such a way that the ROM
> header command would still work.  There's no need to really low-level
> format, of course, so it's likely that just a "N0:DISKNAME" and not a
> "N0:DISKNAME,ID" would work.  The block size still has to work, of
> course and few modern devices deal with physical blocks under 512
> bytes.  That might take some additional mods to SCSI2SD beyond the LUN
> mapper fix.
> -ethan
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Received on 2017-08-20 21:00:04

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