Subject: Cabletron EA412/EA419
To: None <port-mac68k@NetBSD.ORG>
From: Matthias Pfaller <leo@dachau.marco.de>
List: port-mac68k
Date: 02/26/1997 15:20:34
I have a cabletron EA419 (SCSI -> TP Ethernet) that I would like to
convert to a EA412 (SCSI -> TP/BNC Ethernet). So I'm trying to put some
missing parts on the pcb. I'm pretty sure that I need a Fil-Mag 108 SM
for T1 and a NS8392 for U1. I don't know what to do with U2 and C14.

On the backside of the PCB there are a some unpopulated parts as
well. I'm quite sure that R4 (and the two Rs beside R4) and R5
should be 0.5k or 1.5k. R2 is 1k/1%.

I suspect I don't have to populate C18, R9, R10, R8, C17 and R7.

I'm not sure what to do with the R beside R5 (probably R6), C13, C19
and C33.

Is there anyone out there with an EA412 willing to open his box to check
what I would need to do?

BTW, an EA41x is (at the moment) the only way to connect a pc532 to the
ethernet. So in case anyone in the NetBSD/mac68k camp has an EA41x he no
longer needs, I'm quite sure there would be a NetBSD/pc532 user who
could make good use of it.

Thank's - Matthias
-- 
leo@dachau.marco.de			in real life: Matthias Pfaller
marco GmbH, 85221 Dachau, Germany	tel: +49 8131 516142