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TURBOEXPRESS 486VL

GENOA SYSTEMS CORPORATION

TURBOEXPRESS 486VL

Processor

80486SX/80487SX/80486DX/ODP486SX/80486DX2/80486DX3/

Pentium Overdrive

Processor Speed

20/25/33/40/50(internal)/50/66(internal)/99(internal)MHz

Chip Set

SIS

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots (3)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

JP1

Turbo switch

JP19

Speaker

JP15

32-bit VESA Local bus slot

S1

Power LED & keylock

JP16

32-bit VESA Local bus slot

S2

Reset switch

JP17

32-bit VESA Local bus slot

S3

Turbo LED

JP18

 

 

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

JP2

N/A

Factory configured - do not alter

JP3

N/A

Factory configured - do not alter

JP21

N/A

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

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

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) 16K x 8/(1) 32K x 8

CACHE JUMPER CONFIGURATION

Size

JP11

JP12

64KB

Open

Open

128KB

pins 1 & 2 closed

Closed

256KB

pins 2 & 3 closed

Closed

CPU TYPE CONFIGURATION

Type

JP7

JP8

80486SX

pins 2 & 3 closed

Open

80487SX

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

80486DX

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

ODP486SX (168 pin)

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

ODP486SX (169 pin)

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

ODP486SX2

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

80486DX2

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

80486DX3

pins 1 & 2 and 3 & 4 closed

pins 1 & 2 closed

Pentium Overdrive

pins 1 & 2 and 3 & 4 closed

pins 2 & 3 closed

CPU SPEED CONFIGURATION

Speed

JP4

JP5

JP6

20MHz

Closed

Closed

Open

25MHz

Closed

Open

Closed

33MHz

Open

Closed

Closed

40MHz

Closed

Open

Open

50i MHz

Closed

Open

Closed

50MHz

Open

Closed

Open

66i MHz

Open

Closed

Closed

99i MHz

Open

Closed

Closed

VESA WAIT STATE/BUS SPEED CONFIGURATION

CPU Speed

Wait states

JP13

JP14

£ 33MHz

0 wait states

Open

Open

> 33MHz

1 wait state

Closed

Closed