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ALPHASERVER 300

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