I'm currently running NetBSD 1.2_BETA on an ASUS 486DX4/100, with
onboard NCR 53C810, and everything has been working perfectly.  However,
after visiting a computer show today, I'm really tempted to change
motherboards...  =)  The Pentium motherboards I'm interested in (I
honestly wish I could remember the manufacturer, it looked like an ASUS
clone) all have onboard Adaptec SCSI-II controllers.  One I believe was
an AHA-2940AU, the controller chip was marked "AIC-78600".  Another was
marked "AIC-78500", and a third (that I did not note the number on) was
the same as the first, except it had both 50-pin and 68-pin (Wide SCSI)
headers, so I'd imagine it's the wide equivalent to the 78500 chip.  Can
anybody tell me how well these chips are supported under NetBSD?  Will I
regret upgrading (due to loss of support, stability, etc)??  Will the
Adaptec be faster than the NCR?  Anybody know the difference between the
78600 and 78500?

    Also, given this configuration, what do you think would be the most
likely bottleneck in the system:
ASUS PCI-I486/SP3G motherboard, 486DX4/100, 16MB RAM, NCR 53C810 with
Conner 1.06GB SCSI-II HD (64MB swap), S3 Trio64V+ (2MB PCI) video card.

    Would I do best to upgrade the processor (to a Pentium, 90-120 MHz)
or the RAM (to 32, maybe 48MB)?

    I'd appreciate any suggestions anybody might have, so long as
they're before 4am GMT tomorrow (Sunday, when I return to the show)... 
=)  Thanks in advance!

                                                          Will Ferry

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