40-P301-001223-00101111-072594-UMC498-H

1223 = BIOSTAR Microtech International Corp

- 2-72 pin SIMM slots (1-64meg FPM DRAM)

- 2-32bit VESA Local Bus slots

- 5-16bit ISA slots

Biostar Microtech (Taiwan [B0 / 1223]) http://www.biostar.com.tw
Biostar (USA) http://www.biostar-usa.com
Bioteq (Netherlands) http://www.bioteq.com

MB-14xxUIV

40-P101-001223-00101111-072594-UMC498-H
40-P301-001223-00101111-072594-UMC498-H

UM8498 UM8496F

xx is MHz 3VLB 7ISA 4SIMM 2SIMM72

MB-1425/33/40/50UIV Motherboard

- also known as MB-1425/1433/1440/1450 UIV

- AMI BIOS ID string 40-P101-001223-00101111-072594-UMC498-H

- AMI BIOS ID string 40-P301-001223-00101111-072594-UMC498-H

- 2-72 pin SIMM slots (1-64meg FPM DRAM)

- 4-30 pin SIMM slots or 8-30 pin SIMM slots

- 3-32bit VESA Local Bus slots

- 7-16bit ISA slots

- 64k-256k CACHE support in 8-28pin sockets + 1 TAG RAM socket

- AMI 1994 Bios

- UMC UM8494/8496 Chipset (thanks Roger)

- Supports 3.45v/5volt CPU's

- 237pin ZIF CPU socket which supports these processors:

INTEL 80486SX,80486DX/DX2/DX4,P24D, Pentium Overdrive

CYRIX CX486S(M6),CX486DX(M7)

AMD AM486DX,AM486DXL,AM486DX2-66/80

- Supports speeds of 25/33/40/50/66/75/100(internal)MHz.

- Manufactured by: BIOSTAR Microtech International Corp <http://www.bioteq.com/manuals/>

CACHE

UM61256FK-15 9519T R31330 / 9520O R32718

32K*8 cache sync SRAM(?).

UM61256FK-15 CYP 174 DIP 28 PIN 256K SRAM 15ns LP UM61256 61256

W24257AK-15 94421

Partname: W24257AK-15

Description: 16K * 8 high speed, low power CMOS static RAM

Manufacturer: Winbond Electronics

Package: P-DIP28

Pins: 28

Oper. temp.: 0 to 70

Intel DX4

icomp index=435

A80486DX4-100

C5450944

&E 3VOLT SK051

Intel (m) (c) 89'93

QUANTUM TRB850A 810MB 96K cache

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