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ALPHASTATION 500

DIGITAL EQUIPMENT CORPORATION

ALPHASTATION 500

Processor

Alpha

Processor Speed

266/300/333MHz

Chip Set

DEC

Video Chip Set

None

Maximum Onboard Memory

512MB

Maximum Video Memory

None

Cache

2MB

BIOS

Unidentified

Dimensions

330mm x 218mm

I/O Options

Floppy drive interface, SCSI interface, external SCSI connector, parallel port, PS/2 mouse port, serial ports (2), riser slot, audio card connector, media adapter unit connector, SROM port

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Chassis fan power

J1

Floppy drive interface

J38

Cache fan connector

J3

PS/2 mouse port

J39

Diagnostic port

J4

Serial port 1

J40

Front panel connector

J5

Serial port 2

J40A

SROM port

J24

Parallel port

J41

Media adapter unit connector

J32

External SCSI connector

J42

Audio card connector

J36

Riser slot

SL1

SCSI interface

J37

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

J2

Unidentified

Front panel button set as reset switch

J6

Pins 1 & 2 closed

 

Front panel button set as halt switch

J6

Pins 2 & 3 closed

Secure console disabled

J9

Pins 2 & 3 closed

 

Secure console enabled

J9

Pins 1 & 2 closed

Primary console enabled

J10

Pins 2 & 3 closed

 

Alternate console enabled

J10

Pins 1 & 2 closed

Factory configured - do not alter

J15

Unidentified

Factory configured - do not alter

J16

Unidentified

Flash BIOS write protect disabled

J18

Pins 2 & 3 closed

 

Flash BIOS write protect enabled

J18

Pins 1 & 2 closed

Factory configured - do not alter

J20

Unidentified

Factory configured - do not alter

J33

Unidentified

Factory configured - do not alter

J35

Unidentified

DIMM CONFIGURATION

Size

Bank 0

Bank 1

32MB

(4) 1M x 64

None

64MB

(4) 2M x 64

None

128MB

(4) 4M x 64

None

256MB

(4) 8M x 64

None

64MB

(4) 1M x 64

(4) 1M x 64

96MB

(4) 2M x 64

(4) 1M x 64

160MB

(4) 4M x 64

(4) 1M x 64

288MB

(4) 8M x 64

(4) 1M x 64

128MB

(4) 2M x 64

(4) 2M x 64

192MB

(4) 4M x 64

(4) 2M x 64

320MB

(4) 8M x 64

(4) 2M x 64

256MB

(4) 4M x 64

(4) 4M x 64

384MB

(4) 8M x 64

(4) 4M x 64

512MB

(4) 8M x 64

(4) 8M x 64

CACHE CONFIGURATION

Note: 2MB cache is factory installed and is not configurable.

SROM SELECTION

Setting

J11

J12

J13

J14

J17

J19

Power up

Closed

Open

Open

Open

Open

Open

Mini console

Open

Closed

Open

Open

Open

Open

Floppy loader

Open

Open

Closed

Open

Open

Open

Mem test

Open

Open

Open

Closed

Open

Open

MCHK mini console

Open

Open

Open

Open

Closed

Open

No init mini console

Open

Open

Open

Open

Open

Closed