Micronics 80486DX-25/33 EISA (09-00090-xx)
Chipset
CPU sockets
FSB speeds
25MHz33MHz
Form factor
AT (max 305 x 330 mm)
Dimensions
350mm x 304mm
I/O ports
1x
AT Keyboard
Expansion slots
8x
32-bit EISA
Also known as:
- Micronics 09-00090-64
Known issues:
- DALLAS RTC coin cell empty
The motherboard's Real-Time Clock (RTC) chip contains a coin cell that may have drained, causing the loss of CMOS settings. This can result in an inability to save settings, causing system instability or failure to boot. To fix this, the RTC chip can be replaced with an equivalent or repaired by cutting into it and soldering on a new external coin cell holder. Replacement guides are available at https://github.com/necroware/nwX287 or https://github.com/necroware/nw12887, depending on the actual chip used.
Notes:
BIOS shadowing needs to be disabled for any memory configuration using 4MB SIMM modules
Last updated 2022-11-19T21:45:32Z
Score is 8.5/10
Chipset
Chipset parts
No drivers available
1 board document available
Language
Release date
File
Last edit
5 chip documents available
Chip
Language
Release date
File
Last edit
Chip
Language
English
Release date
File
Last edit
Chip
Language
English
Release date
File
Last edit
Chip
Language
English
Release date
File
Last edit
Chip
Language
English
Release date
File
Last edit
Chip
Language
English
Release date
File
Last edit
Disclaimer
The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.