DIGITAL EQUIPMENT CORPORATION

ALPHASERVER 300

Device Type

Mainboard

Processor

Alpha

Processor Speed

266MHz

Chip Set

Unidentified

Maximum Onboard Memory

512MB

Cache

2MB

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

Floppy drive interface, SCSI interfaces (2), parallel port, PS/2 mouse port, serial ports (2), riser slot

CONNECTIONS

Purpose

Location

Purpose

Location

Service LED

CN1

Serial port

CN6

Service LED

CN2

PS/2 mouse port

CN7

SCSI interface

CN3

SCSI interface

CN8

Parallel port

CN4

Floppy drive interface

CN9

Serial port

CN5

Riser slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Console select main console

J1

Pins 2 & 3 closed

 

Console select mini console

J1

Pins 1 & 2 closed

»

Boot up from flash BIOS

J2

Pins 2 & 3 closed

 

Boot up from floppy

J2

Pins 1 & 2 closed

»

Reset switch select reset

J3

Pins 1 & 2 closed

 

Reset switch select halt interrupt request

J3

Pins 2 & 3 closed

»

Flash BIOS write protect disabled

J4

Pins 1 & 2 closed

 

Flash BIOS write protect enabled

J4

Pins 2 & 3 closed

»

Factory configured - do not alter

J21

Open

»

External SCSI cable sensing enabled

J27

Open

External SCSI cable sensing disabled

J27

Closed

SIMM CONFIGURATION

Size

Bank 0

Bank 1

16MB

(4) 1M x 36

None

32MB

(4) 1M x 36

(4) 1M x 36

32MB

(4) 2M x 36

None

48MB

(4) 2M x 36

(4) 1M x 36

64MB

(4) 2M x 36

(4) 2M x 36

64MB

(4) 4M x 36

None

80MB

(4) 4M x 36

(4) 1M x 36

96MB

(4) 4M x 36

(4) 2M x 36

128MB

(4) 4M x 36

(4) 4M x 36

128MB

(4) 8M x 36

None

160MB

(4) 8M x 36

(4) 2M x 36

192MB

(4) 8M x 36

(4) 4M x 36

256MB

(4) 8M x 36

(4) 8M x 36

256MB

(4) 16M x 36

None

272MB

(4) 16M x 36

(4) 1M x 36

288MB

(4) 16M x 36

(4) 2M x 36

320MB

(4) 16M x 36

(4) 4M x 36

384MB

(4) 16M x 36

(4) 8M x 36

512MB

(4) 16M x 36

(4) 16M x 36

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

CPU SPEED SELECTION

Speed

J7

J32

266Hz

Pins 1 & 2 closed

Pins 1 & 2 closed

I/O CHIP SELECTION

Type

J25

J26

»

87332

Closed

Closed

 

87312

Open

Open