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S486VL EDITION 1.1

MAGUS DATA TECHNOLOGY, INC.

S486VL EDITION 1.1

Processor

80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive

Processor Speed

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

Chip Set

VLSI

Max. Onboard DRAM

128MB

Cache

None

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Turbo switch

J1

Speaker

J4

Turbo LED

J2

Power LED & keylock

J5

Reset switch

J3

32-bit VESA local bus slots

SL1 & SL2

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Power good signal detect from power supply

JP1

pins 1 & 2 closed

 

Power good signal detect from board

JP1

pins 2 & 3 closed

Monitor type select CGA/EGA/VGA

JP2

pins 1 & 2 closed

 

Monitor type select MDA/EGA/VGA

JP2

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) 1M x 9

(4) 256K x 9

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

17MB

(4) 4M x 9

(4) 256K x 9

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

64MB

(4) 16M x 9

NONE

65MB

(4) 16M x 9

(4) 256K x 9

68MB

(4) 16M x 9

(4) 1M x 9

80MB

(4) 16M x 9

(4) 4M x 9

128MB

(4) 16M x 9

(4) 16M x 9

CPU TYPE CONFIGURATION

Type

JP4

JP5

JP6

80486SX

pins 2 & 3 closed

pins 2 & 3 closed

pins 2 & 3 closed

80487SX

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

80486DX2

pins 2 & 3 closed

pins 1 & 2 closed

pins 1 & 2 closed

Pentium Overdrive

pins 1 & 2 closed

pins 1 & 2 closed

pins 1 & 2 closed

CPU SPEED CONFIGURATION

Speed

JP3

25MHz

pins 1 & 2 closed

33MHz

pins 2 & 3 closed

50iMHz

pins 1 & 2 closed

66iMHz

pins 2 & 3 closed

MISCELLANEOUS TECHNICAL NOTE

Note:This board will handle a 80486DX4 with an adapter supplied from Magus. The settings for this adapter are unidentified by the manufacturer.