Bernoulli Box controller?

[Chuck Guzis]

On 15 Aug 2008 at 17:13, Dave McGuire wrote:

>    Remember, there were quite a few years between the 10/20MB  
> Bernoullis and the 90MB units. I've seen gazillions of those ISA  
> controller cards at surplus yards years ago, but I don't know where  
> one would find them now.  There wasn't much logic on them; maybe  
> 10-12 TTL chips.

If, as one of the posters has suggested, the controller card for the 
20MB BBox is the PC-2/50:

http://stason.org/TULARC/pc/hard-disk-floppy-controllers/I-L/IOMEGA-
CORPORATION-None-PC2-50-PC2B-50.html

then the same 8 bit ISA card shipped with the 90MB units.  Mine has 
the same layout as described above, with mostly jellybean TTL logic 
and a 2Kx8 Sony SRAM and a boot UV EPROM.  A total of 5 PALs on the 
card labeled 129703, 134880, 129501, 129400 and 128602.

Manufacturing date is 12/12/91.  I recall being mildly surprised at 
the retro-ness of the card; not just the 8 bit part, but the use of 
SSI LSTTL logic when the rest of the world was using LSI CMOS.

Cheers,
Chuck