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UC4913 (VER. 1.3)

ELITEGROUP COMPUTER SYSTEMS, INC.

UC4913 (VER. 1.3)

Processor

CX486M6/CX486M6-C6/AM486SX/80486SX/AM486DX/80486DX/ 80486DX2/P23T

Processor Speed

25/33/40/50(internal)/50/66(internal)MHz

Chip Set

UMC

Video Chip Set

None

Maximum Onboard Memory

64MB

Maximum Video Memory

None

Cache

64/128/256KB

BIOS

AMI

Dimensions

250mm x 220mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

J1

Reset switch

JP5

External battery

J2

Power LED & keylock

JP6

Turbo LED

JP3

32-bit VESA local bus slots

SL1 - SL3

Turbo switch

JP4

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Monitor type select color

JP11

Pins 2 & 3 closed

 

Monitor type select monochrome

JP11

Pins 1 & 2 closed

 

CPU type select PQFP CPU

JP12

Open

 

CPU type select PGA CPU

JP12

Closed

 

Any VESA card installed

JP18

Pins 1 & 2 closed

 

Weitek Power 9000 VESA card installed

JP18

Pins 2 & 3 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(4) 256K x 9

None

2MB

(4) 256K x 9

(4) 256K x 9

4MB

(4) 1M x 9

None

5MB

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

20MB

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

None

CACHE CONFIGURATION

Size

Bank 0

Bank 1

TAG

64KB

(4) 8K x 8

(4) 8K x 8

(1) 8K x 8

128KB

(4) 32K x 8

None

(1) 8K x 8

256KB

(4) 32K x 8

(4) 32K x 8

(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP13

JP15

JP16

JP17

64KB

Open

Open

Pins 1 & 2 closed

Open

128KB

Pins 2 & 3 closed

Open

Pins 2 & 3 closed

Closed

256KB

Pins 1 & 2 closed

Closed

Pins 1 & 2 closed

Closed

CPU SPEED SELECTION

Speed

JP9

JP10

JP23

25MHz

Closed

Closed

Pins 2 & 3 closed

33MHz

Open

Closed

Pins 2 & 3 closed

40MHz

Closed

Open

Pins 2 & 3 closed

50iMHz

Closed

Closed

Pins 2 & 3 closed

50MHz

Open

Open

Pins 1 & 2 closed

66iMHz

Open

Closed

Pins 2 & 3 closed

CPU TYPE SELECTION

Type

JP7

CX486M6

Pins 2 & 3 closed

CX486M6-C6 module

Pins 1 & 2, 3 & 4 closed

AM486SX

Pins 2 & 3 closed

80486SX

Pins 2 & 3 closed

AM486DX

Pins 1 & 2, 3 & 4 closed

80486DX

Pins 1 & 2, 3 & 4 closed

80486DX2

Pins 1 & 2, 3 & 4 closed

P23T

Pins 1 & 2, 3 & 4 closed

CPU TYPE SELECTION (CX486M6-C6 MODULE ONLY)

Setting

JP19

JP20

JP21

Module installed

Pins 2 & 3 closed

Pins 2 & 3 closed

Pins 1 & 2 closed

Module not installed

Pins 2 & 3 closed

Pins 1 & 2 closed

Pins 1 & 2 closed

VL BUS WAIT STATE SELECTION

Setting

JP1

0

Open

1

Closed

VL BUS SPEED SELECTION

Setting

JP2

<= 33MHz

Open

>33 MHz

Closed