At the time when I was working for a university during summer (3 times) when I was high school student, I had opportunity to work with zenith computers a LOT and actually repair them. 1998 thru 1991 or so.
The motherboard you got for 386dx is NOT from a Zenith. Zenith at this time is staunchly proprietary hardware design. Only thing is IBM compatible is bios and chips, rather like Compaq which is competing for same thing and also proprietary but both works perfectly with PC software. PS/2 is totally out of the topic here but it is perfect PC/XT/AT compatible with IBM as well. Zenith always say Zenith on the bios text POST start up.
Zenith used their home numbered parts in power supplies and Zenith was a electronics giant since late 1900's before and knew how to design also proprietary power supply as well but strangely weird, and they tend to use red and green LEDs by the power connector on motherboard as voltage status when on and power supply connectors are not standard either, case is totally non-standard apart from slots ISA typically. Floppy and hard drives are standard and ISA bus is standard. Zenith did use IDE like compaq was with PATA standard (16 bits).
https://www.google.com/search?client=firefox- … =vEfAHvPTzXBD-M:
https://www.google.com/search?client=firefox- … =vEfAHvPTzXBD-M:
https://www.google.com/search?client=firefox- … =6_nZ89tINezdrM:
https://www.google.com/search?client=firefox- … =6_nZ89tINezdrM:
Too bad, could not find photos of 386 boards looks like. Basically large very.
And cases is heavy.
Zenth did make their own design of luggables and carry-able DTR notebooks even few semi-notebook but internally were very cheaply made inside vs compaq's. Go figure!
Worked on Zenith 8088, 286 and occasionally 386 and many 386SX machines. I was given a new EazyPC (with a monitor bolted on using one board) , bios is not standard as it used a 186 CPU so it locks up on rare few software including one of DOS's utility. I was into 286 and 386 and uni computing dept only gave me EazyPC on hand but I should had taken asked 286 even 8088. But I gave it away short time later to someone who could use it when we moved and that was more than 2 decades ago.
Cheers, Pentiumspeed.
Great Northern aka Canada.