lotus



previous page: 80486ISA Motherboard Settings and Configuration
  
page up: Motherboards Jumper Settings: A-Z: F
  
next page: 80486L-ISA Motherboard Settings and Configuration

80486L-EISA Motherboard Settings and Configuration






FREE COMPUTER TECHNOLOGY, INC.

80486L-EISA

Processor

80486SX/80487SX/80486DX/80486DX2

Processor Speed

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

Chip Set

SIS

Max. Onboard DRAM

128MB

SRAM Cache

64/128/256/512KB

BIOS

Phoenix

Dimensions

330mm x 218mm

I/O Options

32-bit L-ISA local bus card slot

NPU Options

None

C ONNECTIONS

Purpose

Location

Purpose

Location

Turbo LED

H1

Speaker

H4

Reset switch

H2

Power LED & keylock

H5

Turbo switch

H3

32-bit L-ISA local bus card

S1

CPU TYPE CONFIGURATION

U24

U35

JP4

JP5

JP11

JP12

80486DX2

80486SX/DX

pins 1 & 2

pins 1 & 2 and 3 & 4

open

closed

80487SX

80486SX/DX

pins 2 & 3

pins 1 & 2 and 3 & 4

open

closed

80486SX

80486SX/DX

open

pins 2 & 3

open

closed

NONE

80486SX/DX

pins 1 & 2

pins 1 & 2 and 3 & 4

closed

open

Note:Pins designated should be in the closed position.

U35 is a surface mount CPU that may or may not have been installed at the factory.

U24 is a socketed CPU that has been installed at the factory, or can be installed by the user.

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

64MB

(4) 16M x 9

NONE

128MB

(4) 16M x 9

(4) 16M x 9

SRAM JUMPER CONFIGURATION

Size

JP1

JP2

JP3

64KB

open

open

open

128KB

open

closed

pins 1 & 2 closed

256KB

open

closed

pins 2 & 3 closed

512KB

closed

closed

pins 1 & 2 closed

SRAM CONFIGURATION

Size

Cache SRAM

Location

TAG

64KB

(8) 8K x 8

Banks 0 & 1

(1) 8K x 8

128KB

(4) 32K x 8

Bank 0

(1) 8K x 8

256KB

(8) 32K x 8

Banks 0 & 1

(1) 32K x 8

512KB

(4) 128K x 8

Bank 0

(1) 32K x 8








TOP
previous page: 80486ISA Motherboard Settings and Configuration
  
page up: Motherboards Jumper Settings: A-Z: F
  
next page: 80486L-ISA Motherboard Settings and Configuration