Hello, i am from belgium.
New here,In advance sorry for my bad english. I don't want use traductor. I thanks you for read my post.

I look for information, manual on my machines.

Configuration elonex pc-433(working)
Repair :
Soldering 1 capacitor 10uf 16v on daughter card extenstion 16bits 5slots and add sound card success

bios mr bios
486sx 33mhz (i have tested dx2 66mhz it's ok but it is on other machine.)
simm 30pin 640kb uprgraded to 8x1mb (i will upgrade to 8x4mb but i dont now if i can! And dont have module memory on my hand)
trident 8900c 512kb and 512kb more (commanded for 5euro, i wait package).
als 100 with ide pin connected to 1 cd-rom drive (sound work good but low volume??? )
1 floppy 3.5
dos 6.22/win3.11 on 200mb hdd and when i receive my new/old hdd. win95
the bios is hightly configurable. very difficult for me, need manual for mr bios. Positifs thing this bios support 32gb ide hdd or more i dont have tested all. My other dx2 66mhz is hdd limited to 2gb(ms-4138 if somebody have bios for support more than 2gb 😀 )

second pc : (working)
ms - 4138
ami bios
Dx2 66 mhz
simm 72pin 4x4mb
trident 9440 1mb vesa 32bits upradable to 2mb very long card
yamaha opl3 based sound card med 3700 picked on my amd k6-2 socket super 7 i wait ess 1688
i wait bios 3.7v lithium battery 5euro on ebay
dos 6.22/win3.11 to one 1gb hdd from laptop.

third pc(not working)
ibm system 30 286
256kb video card
no sound card
hdd work
3.5floppy dont know working state
problem with rtc module dallas 1287 i have try to rework module and now the pc sound buzz and do nothing more. use this link http://mcamafia.de/mcapage0/dsrework.htm
commanded on ebay i dont now if rework after that 10euro
Resume of my demand.
- manual elonex pc-433/ms-4138
- info on mrbios configuration
- ms-4138 bios uprgade for hdd if exist.
-experience return on rtc 1287 module