PCChips M520
Also known as: EURONE EM-5100V CONCORD OFFICE AUTOMATION INDUSTRIAL (HK),, LTD. COA-520
Form factor
Baby-AT (max 220 x 330mm)
PSU connector
AT-Style (P8-P9)
Chipset
Chipset parts
Intel 82437VX (TVX) Intel 82371SB (PIIX3) Intel 82438VX (TDX)
Dimensions
220 mm x 260 mm
CPU socket
Socket 7 (PGA321)
CPU platforms
Pentium (P54)Pentium MMX (P55)
Supported FSB speeds
50MHz, 60MHz, 66MHz, 75MHz, 83MHz, 100MHz
Cache
0 B, 256 KB , 512 KB
Supported RAM size
128 MB
Supported RAM types
72-pin FPM, 72-pin EDO, SDR UDIMM, 168-pin EDO UDIMM
I/O ports
1x 
Floppy interface
2x 
IDE interface
1x 
PS/2 keyboard
1x 
PS/2 mouse
1x 
Parallel
2x 
Serial
2x 
USB 1.x
Expansion slots
3x 
32-bit PCI
4x 
16-bit ISA

Known issues:

  • Insufficient Power Delivery.

    May spontaneously combust, blow up, or damage hardware due to electrical failure.

Notes

Known for having an illegal BIOS.

L bios can only be upgraded to L bios, S only to S bios. Failing to do so can result in non-bootable board.

Needs patched BIOS (either the patched last official BIOS or the Unicore BIOS) to use HDDs larger than 32 GB. Split Voltage CPU Support w/ VRM and BIOS update

Last updated 2022-10-11T11:48:24Z
drv Drivers: 1 entry
Language
Media type
OS Compatibility
Name
Version
English
1x Archive
win95 Windows 95 winnt3.5x Windows NT 3.5 winnt4 Windows NT 4.0 os2 3.x OS/2 Warp 3.0 ?
BIOS images: 20 files
Manuf.
POST String
Note
Core Ver.
BIOS Ver.
Award
12/07/98-i430VX-2A59GHTBC-00
Unicore BIOS
4.51PG
Award
10/18/96-i430VX-10031996C-00
First Legal BIOS
4.51PG
Award
10/18/96-i430VX-10031996C-00
First Legal BIOS
4.51PG
Award
10/15/97-i430VX-02271997C-00
Last Official BIOS for M520 (UMC S variant)
4.51PG
Award
10/15/97-i430VX-02271997C-00
128 GB Patched BIOS (UMC S variant)
4.51PG
Award
10/17/97-i430VX-02271997C-00
Last Official BIOS for M520 (UMC L variant)
4.51PG
Award
10/17/97-i430VX-02271997C-00
128 GB Patched BIOS (UMC L variant)
4.51PG
Award
09/15/97-i430VX-02271997C-00
4.51PG
Award
09/26/97-i430VX-02271997C-00
4.51PG
Award
12/07/98-i430VX-2A59GHTBC-00
Modded by Jan Steunebrink
4.51PG
Award
09/15/97-i430VX-02271997C-00
4.51PG
Award
09/26/97-i430VX-02271997C-00
4.51PG
Award
08/26/96-i430VX-2A59Ht5BC-00
Ilegal BIOS
4.51PG
Award
08/26/96-i430VX-2A59Ht5BC-00
Ilegal BIOS
4.51PG
Award
06/21/96-i430VX-2A59Ht5BC-00
Ilegal BIOS
4.51PG
Award
06/21/96-i430VX-2A59Ht5BC-00
Ilegal BIOS
4.51PG
Award
05/30/96-i430VX-2A59Gf5BC-00
Ilegal BIOS
4.51PG
Award
05/27/96-i430VX-2A59Ht5AC-00
Ilegal BIOS
4.51PG
Award
03/03/97-i430VX-02071997C-00
4.51PG
Award
02/19/97-i430VX-02151997C-00
4.51PG
doc Documentation: 1 entry
No CPUs listed.
No NPUs listed.

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