I just hooked up my Mac IIsi to a relatively old (1 year?) Asante EN/SC
adapter. The 10Base-T connection works like a charm. I installed the
newest drivers from Asante's ftp server.

The problem begins when I attach one more device to the SCSI chain -
specifically a 50MB drive. I power up the drive, then the Mac. The Mac
tests memory, etc. Just before the "happy Mac face" normally shows up, the
power light on the EN/SC goes out, and the boot process stops. So I can use
the network, or the external drive, but not both at once. This makes the
Asante box pretty much unusable.

It doesn't look like a purely electrical SCSI problem, because if I turn
on the drive just a second or so too late, so that it doesn't get noticed
during the initial SCSI polling, the Mac boots normally and the adapter
works, even though the hard disk is powered on and connected. The Mac has
*never* once failed to boot from its internal drive up to now (and I've had
it for over a year).

Here is what I tried: changing the SCSI ID's of the EN/SC and the disk --
several permutations; changing the order of devices, i.e. the EN/SC at the
head or tail of the chain; overterminating with an external terminator
(both devices have internal ones); underterminating, i.e. removing internal
resistors from the hard disk; trying another EN/SC box; trying another
identical drive; trying several different SCSI cables.

Has anybody seen this? More importantly, does anyone have a solution?
Thanks a lot.    E.
