Re: [hatari-devel] SCSI controller (was: Hatari 1.6 for Mac OS X)

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I just had a quick look at the datasheet of the ncr 5380 (
It seems to be quite different from the 53C90 unit, which belongs to the next generation of SCSI controllers. They won't be compatible, but maybe at least some of the code could be re-used. It would require to take a closer look at the datasheets. For now i would be happy to understand at least how the 53C90 really works ;-)
I am trying to use QEMU's emulation (hw/esp.c) + datasheet as a template to write my code.

Best regards,


They are not compatible, but maybe 

Am 08.01.2012 um 18:23 schrieb Thomas Huth:

> Am Sun, 8 Jan 2012 11:13:00 +0100
> schrieb Andreas Grabher <andreas.grabher@xxxxxxxxxxxx>:
>> At the moment i am working on SCSI (emulating NCR53C90), which also
>> requires DMA emulation.
> That's interesting ... As far as I know, the Atari TT and Falcon used a
> NCR 5380 SCSI controller chip (which we do not support in Hatari yet).
> I wonder whether the 5380 and 5390 are compatible ... do you have any
> information about this?
> Thomas

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