Older versions not compatible
3C529 / 3C529-TP
V3.3 EtherDisk for ELMC/TP (8193-04)
EtherDisk, 3C523 family w/latest patches, V3.4.
not Compatible with 486+
The "old" 3C523 have a copyright date of 1987 on them
and will only work properly in a 286 or 386. From my expiriences, it will
only let the first 8MB RAM be usable no matter how much RAM you have installed.
The newer revision will have a 1990 or 1991 date on it.
Fact is: some series of the older Ethernet/MC have a microcode
incompatible with 486-processors. (Bus signalling most likely - haven't
tested that in depth)
Symptom: they worked fine as long as they were used in
Mod. 70/80 - but when the customer swapped them to the new bought 76/77
they went belly up and did not even pass the DOS-based diags test.
These are older ones produced before 1990 - but ironically
not all old cards are automatically affected. There was a diagnostic program
available from 3COM (I think it came with the revised E/MC) which checks
the microcode level and warns for possible incompatibilities. In addition
some of the setup / diags and driver software had a problem with later
OS-versions (did not run properly under PC-DOS 4.x and above due to "version
Component Differences, Old vs. New
>Is that a 3C523? ISTR that those (or most of them, anyway) wouldn't
work properly in anything than a 386.
The original 3C-523 has a limitiation - the later ones (3C-523B) hasn't.
Roughly the two can be differed by looking on the board:
Round "transformer", many "through-hole" chips and "classical"
resistors, long DIL "i" (Intel) 82586 MCU, "(C) 1987 3Com" at frontside
Square "3Com" transformer, mainly SMD chips with square QFP
"i" Intel 82586 MCU, "(C) 1991 3Com" along the bottom/front.
The old one will most likely not run with anything bigger than a 386DX
- the new one hasn't got this problem. Works with 486 and Pentium. Both
cards have the same card-ID and use the same ADF, so you cannot tell which
is which by the ID only.
- 3Com EtherLink/MC 32 Ethernet Adapter
Etherdisk for Etherlink MC/32
|1B CSROM.EVN 5613-33
2B CSROM.ODD 5613-34
5D 3Com 6399-01
6B 25.0000 MHz Osc
|11C 3Com 6400-03
13D 3Com 6401-04
14D 3Com 6428-01
NE1 Neon Lamp
E-disk version 3.4, includes NT driver
3C501 or 3C527 (self extracting)
WHY can't people use the standard "U" designation for ICs?
3C529 / 3C529-TP Etherlink
3C529 EtherLink III MCA
V4.3 EtherDisk for 3C579 /3C529 Etherlink III NIC
ODI-32 driver for EtherLink III 3C5x9 adapters
Unsupported Unixware drivers for the 3C5X9 Ad
EtherLink III 3C5x9 family NetWare 2.x server drivers, and IPX.COM workstation
shell driver, with LANPATCH utility.
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