MANUAIS DE MOTHERBOARDS BIOTEQ

MB-14XXUIV

25/33/40/50/66/75/100MHz 80486 VLB Turbo Mainboard

Features

CPU

25/33/40/5OMHz system and VESA Local Bus speed.
I-Iardware and Software speed switchable function supported.
Bus I/O clock 8 MHz for maximum compatibility with add on cards.
Shadow RAM
- A memory controller that provides shadow RAM and supports 8-bit ROM BIOS.
DRAM memory
- Support (1) 1 bank 30-pin 256KB/1/4/16 MB SIMM Module sockets.
(2) 2 banks 72-pin 1/2/4/8/16/32MB SIMM Module socket.
- Support DRAM memory up to 64MB on board.
- DRAM 'Iype: page mode, 80ns required.
Cache memory
- Flexible Cache RAM size 64KB/128KB/256KB.
Bus slots
- Seven 16-bit ISA Bus slots and three VESA I.ocal Bus slots.
- Dimension 22cmX25cm(WxL)
Software
- AWARD or AMI Legal BIOS
- Offers the highest performance for MS/DOS, OS/2,Windows, Windows NT Novell, etc.

JUMPER SETTINGS
CPU CLOCK:
25 MHZ (DX2-50MHZ/DX4-75MHZ) JP4 OPEN | JP5 OPEN | JP6 CLOSED
33 MHZ (DX2-66MHZ.DX4-100MHZ) JP4 CLOSED | JP5 CLOSED | JP6 CLOSED
40 MHZ (DX2-80MHZ) JP4 OPEN | JP5 CLOSED | JP6 CLOSED
50 MHZ (DX-50MHZ) JP4 CLOSED | JP5 OPEN | JP6 OPEN

CPU VOLTAGE SELECT:
3.3-3.6 VOLT JP14 1-2 CLOSED | JP27 1-2 CLOSED | JP16 1-2 CLOSED | JP38 1-2 CLOSED | JP39 OPEN
CYRIX 4 VOLT JP14 1-2 CLOSED | JP27 1-2 CLOSED | JP16 1-2 CLOSED | JP38 2-3 CLOSED | JP39 CLOSED
5 VOLT JP14 2-3 CLOSED | JP27 2-3 CLOSED | JP16 2-3 CLOSED | JP38 1-2 CLOSED | JP39 OPEN
NOTE: JP38 AND JP39 ONLY IN VER 6. AND AFTERWARDS SUPPORT CYRIX 4V CPU

CPU TYPE SELECT:
PCB VERSION 1 JP 20 NO | JP 23 NO | JP40 NO
PCB VERSION 2 JP 20 NO | JP 23 NO | JP40 NO
PCB VERSION 3 JP 20 NO | JP23 YES | JP40 NO (SUPPORT AMD 3V CPU (A804086DX2))
PCB VERSION 5 JP 20 YES (1x2PIN) | JP23 NO | JP40 NO (SUPPORT AMD 3V CPU (A80486DX2))
PCB VERSION 6 JP 20 YES (1x2PIN) | JP23 NO | JP40 NO (SUPPORT AMD 3V CPU (A80486DX2) & CYRIX 4V CPU))
PCB VERSION 7 JP 20 YES (1x3PIN) | JP23 NO | JP40 YES (SUPPORT AMD 3V CPU (A80486DX2) & CYRIX 4V CPU & AMD ENHANCED (PLUS) CPU))

 

CPU TYPE

486 SX

486 DX

486DX-SL/DX4

P24D

P24T

JP11

OPEN

OPEN

1-2 CLOSED

1-2 CLOSED
4-5 CLOSED

1-2 CLOSED

JP12

2-3 CLOSED

2-3 CLOSED

1-2 CLOSED

1-2 CLOSED
4-5 CLOSED

1-2 CLOSED

JP13

2-3 CLOSED

1-2-3-4 CLOSED

1-2-3-4 CLOSED

1-2-3-4 CLOSED

1-2-3-4 CLOSED

JP17

2-3 CLOSED

1-2 CLOSED

1-2 CLOSED

1-2 CLOSED

2-3 CLOSED

JP18

OPEN

OPEN

5-6 CLOSED

3-4 5-6 CLOSED

5-6 CLOSED

JP19

OPEN

OPEN

1-2 3-4 CLOSED

1-2 3-4 CLOSED

1-2 3-4 CLOSED

JP35

CLOSED

CLOSED

OPEN

OPEN

OPEN

CPU TYPE

M6

M7

AMD 486DXL

UMC 486

 

JP11

1-2 3-4 CLOSED (5-6 FOR DOUBLE CLOCK)

1-2 3-4 CLOSED (5-6 FOR DOUBLE CLOCK)

2-3 CLOSED

2-3 CLOSED

 

JP12

1-2 3-4 5-6 CLOSED

1-2 3-4 5-6 CLOSED

2-3 CLOSED

2-3 CLOSED

 

JP13

2-3 CLOSED

1-2 3-4 CLOSED

1-2 3-4 CLOSED

2-3 CLOSED

 

JP17

OPEN

1-2 CLOSED

1-2 3-4 CLOSED

3-4 CLOSED

 

JP18

2-3 4-5 CLOSED

2-3 4-5 CLOSED

1-2 CLOSED

1-2 CLOSED

 

JP19

2-3 4-5 CLOSED

2-3 CLOSED

OPEN

OPEN

 

JP35

OPEN

OPEN

CLOSED

CLOSED

 

FOR VERSION 7: AMD ENHANCED (PLUS):
JP11 1-2 CLOSED 3-6 OPEN | JP12 1-2 CLOSED 4-5 CLOSED | JP13 1-2 3-4 CLOSED
JP17 1-2 CLOSED 3-4 OPEN | JP18 3-4 5-6 CLOSED | JP19 1-2 3-4 CLOSED | JP20 1-2-3 OPEN
JP40 CLOSED
NOTES
1. JP23 can be found "only" in PCB Ver: 3.
For Ver: 3 (JP23:DX/DX4=open, DX2=closed).
2. JP2O can be found in PCB Ver. 5 & afterwards.
For Ver: 5/6 (JP2O: DX/DX4=open, DX2=closed).
For Ver: 7 (JP2O: DX/DX4=open, DX2=2-3 closed).
JP4O can be found in PCB Ver: 7 & afterwards.