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EXCALIBUR VLB PENTIUM

AMERICAN MEGATRENDS, INC.

EXCALIBUR VLB PENTIUM

Processor

Pentium

Processor Speed

60MHz

Chip Set

OPTi PTMWBA-V

Max. Onboard DRAM

128MB

Cache

128/256/512KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit VESA local bus slots(2), floppy drive interface,

IDE interface, parallel port, PS/2 mouse port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

J1

Keylock

J40

External battery

J5

IDE interface LED

J41

Parallel port

J6

Turbo LED

J42

IDE interface

J7

Reset switch

J43

Serial port 1

J8

Turbo switch

J45

Serial port 2

J9

32-bit VESA local bus slot

S1

Floppy drive interface

J10

32-bit VESA local bus slot

S2

Speaker

J34

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

J11

Closed

Factory configured - do not alter

J12

Open

Factory configured - do not alter

J13

Open

Factory configured - do not alter

J16

Open

Parallel port set at IRQ7

J18

pins 1 & 2 closed

 

Parallel port set at IRQ5

J18

pins 2 & 3 closed

Serial port 1 set at IRQ4

J19

pins 1 & 2 closed

 

Serial port 1 set at IRQ3

J19

pins 2 & 3 closed

Serial port 2 set at IRQ3

J20

pins 1 & 2 closed

 

Serial port 2 set at IRQ4

J20

pins 2 & 3 closed

Enables IRQ12 from onboard mouse

J28

pins 1 & 2 closed

 

Enables IRQ12 from bus mouse

J28

pins 2 & 3 closed

CMOS memory normal operation

J29

pins 1 & 2 closed

 

CMOS memory clear (RAM drain)

J29

pins 2 & 3 closed

Factory configured do not alter

J38

pins 1, 2, 5, 6 closed

Factory configured do not alter

J39

Open

Factory configured - do not alter

J44

N/A

Factory configured - do not alter

J49

Open

Factory configured - do not alter

J50

Closed

Flash ROM programming disabled

J51

Open

 

Flash ROM programming enabled

J51

Closed

Factory configured - do not alter

SW1/1

Off

Monitor type select color

SW1/2

On

 

Monitor type select monochrome

SW1/2

Off

EXTENDED PARALLEL PORT DMA SELECT

DMA Channel

J17

J25

None (Factory setting)

Open

Open

DRQ0

pins 1 & 2 closed

pins 1 & 2 closed

DRQ1

pins 3 & 4 closed

pins 3 & 4 closed

DRQ3

pins 5 & 6 closed

pins 5 & 6 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

2MB

(1) 256K x 36

(1) 256K x 36

4MB

(1) 512K x 36

(1) 512K x 36

8MB

(1) 1MB x 36

(1) 1MB x 36

16MB

(1) 2MB x 36

(1) 2MB x 36

32MB

(1) 4MB x 36

(1) 4MB x 36

128MB

(1) 8MB x 36

(1) 8MB x 36

Note:The exact location of Bank 0 and Bank 1 are unknown.

CACHE MEMORY CONFIGURATION

Size

J30

J31

J52

J53

J54

128K

Open

Open

pins 1 & 2

pins 1 & 2

pins 1 & 2

256K

Open

Closed

pins 2 & 3

pins 2 & 3

pins 2 & 3

512K

Closed

Closed

pins 1 & 2

pins 1 & 2

pins 1 & 2

Note:Pins designated should be in the closed position.