ADI's mainboard TK8881 FA20

Scan from mainboard


3/4 BABY size 220x180 mm.

Jumpers locator


CONNECTORS

CN1 PARALLEL PORT
CN2 FDD CONNECTOR
CN3 2/4
CN4 1/3
CN5 PRIMARY IDE CONNECTOR
CN6 SECONDARY IDE CONNECTOR

J2 BATTERY CONNECTOR
     IF YOU ARE USING EXTERNAL BATTERY
     PIN1 +3.6V
     PIN4 GROUND

     IF YOU ARE USING INTERNAL Li-BATTERY
     1-2 NORMAL
     3-4 RTC CLEAN

J10 PMU SWITCH
J29 HDD LED
J30 TURBO SWITCH
J31 RESET SWITCH
J32 TURBO LED
J33 SPEAKER CONNECTOR
J34 KEY LOCK CONNECTOR


UMC 8880 486 PCI M/B JUMPER SETTING

J12

J13

J14

J15

J16

J17

J18

486DX/DX2

OPEN

1-2, 3-4

OPEN

3-4

1-2

OPEN

OPEN

486SX

OPEN

2-3

OPEN

OPEN

1-2

OPEN

OPEN

P24T

2-3, 4-5

1-2, 3-4

1-2

2-3

3-4, 5-6

1-2

2-3

CX486S

1-2, 3-4

2-3

2-3

OPEN

3-4

2-3

1-2

CX486DX/DX4

1-2, 3-4

1-2, 3-4

2-3

3-4

3-4

2-3

1-2

AMD486DXLT

OPEN

1-2, 3-4

3-4

1-2, 3-4

1-2

OPEN

OPEN

UMC466SX

OPEN

2-3

3-4

1-2, 3-4

1-2

OPEN

OPEN

UMC486DX

2-3, 4-5

1-2, 3-4

OPEN

3-4

3-4

OPEN

OPEN

SL SX

2-3, 4-5

2-3

OPEN

OPEN

3-4

OPEN

OPEN

AMD INTEL SL DX/DX2 /DX4

2-3, 4-5

1-2, 3-4

OPEN

3-4

3-4

OPEN

OPEN

P24D

2-3, 4-5

1-2, 3-4

OPEN

3-4

3-4

OPEN

OPEN

CX M1SC (586)

2-3, 4-5

1-2, 3-4

OPEN

3-4

3-4

OPEN

OPEN

AMD 586-133

2-3, 4-5

1-2, 3-4

OPEN

3-4

3-4

OPEN

OPEN


J20

J23

J24

J25

J26

J27

JUMPWIRE

486DX/DX2

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

486SX

OPEN

OPEN

OPEN

OPEN

OPEN

OPEN

24

1-2

1-2

OPEN

OPEN

OPEN

OPEN

CX486S

2-3

1-2

OPEN

OPEN

OPEN

OPEN

CX486DX/DX4

2-3

1-2

OPEN

OPEN

OPEN

OPEN

AMD486DXLT

OPEN

2-3

OPEN

OPEN

OPEN

OPEN

UMC486SX

OPEN

2-3

OPEN

OPEN

OPEN

OPEN

UMC486DX

1-2

1-2

OPEN

OPEN

OPEN

OPEN

SL SX

1-2

1-2

OPEN

OPEN

OPEN

OPEN

AMD INTEL SL DX/DX2 /DX4

1-2

1-2

OPEN

OPEN

OPEN

OPEN

P24D

1-2

1-2

1-2

1-2

1-2

OPEN

CX M1SC (586)

1-2

1-2

1-2

1-2

1-2

1-2

AMD 586-133

1-2

1-2

1-2

1-2

1-2

OPEN

J19-PIN1 & J14-PIN3 CLOSE



J19 CYRIX CPU CLOCK MODE

1X

1-2

2X

2-3

OTHER CPU

OPEN



J21 INTEL CPU CLOCK MODE

2.5X

1-2

2X

2-3

3X,OTHER CPU

OPEN



J22 INTEL P24D

WRITE THROUGH

1-2

WRITE BACK

2-3

OTHER CPU(DX4-100)

OPEN



J6,J7 CPU TYPE

J6

J7

CYRIX 586, AMD 586, INTEL

1-2

1-2

CYRIX

2-3

1-2

UMC

1-2

2-3



J1 CACHE SIZE

J1

U4 (TAG)

U5,U6, U7,U8 (DATA)

128KB

OPEN

32K*8

32K*8

256KB

1-2

32K*8

64K*8

512KB

1-2, 3-4

32K*8

128K*8



J28 CPU CLOCK

1-2

3-4

5-6

25MHz

ON

OFF

OFF

33MHz

ON

ON

ON

40MHz

ON

ON

OFF

50MHz

OFF

OFF

ON



J8, J9, J11 CPU VOLTAGE SELECTION

J8

J9

J11

3.3 V

2-3

2-3

1-2

3.45 V

2-3

2-3

3-4

3.6 V

2-3

2-3

5-6

4.0 V

2-3

2-3

7-8

5.0 V

1-2

1-2

1-2



J3, J4 PARALLEL PORT DMA CHANNEL SELECTION

J3

J4

DMA 1

1-2

1-2

DMA 3

2-3

2-3



J5 FLASH ROM VOLTAGE SELECTION

1-2

12V FLASH ROM

2-3

 5V FLASH ROM

OPEN

EPROM



AWARD BIOS ISA 486 (ZIP)