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ALPHAPC64

DIGITAL EQUIPMENT CORPORATION

ALPHAPC64

Processor

Alpha

Processor Speed

200/233/275MHz

Chip Set

DEC

Video Chip Set

None

Maximum Onboard Memory

512MB

Maximum Video Memory

None

Cache

512/1024/2048/4096/8192KB

BIOS

Unidentified

Dimensions

330mm x 221mm

I/O Options

32-bit PCI slots (4), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), cache slots (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Chassis fan power

J1

IDE interface

J26

Chassis fan power

J14

Serial port 2

J30

Reset switch

J3/pins 28 & 30

Serial port 1

J32

IDE interface LED

J3/pins 29 & 31

PS/2 mouse port

J34

Power LED & keylock

J3/pins 32,34,36,38,40

32-bit PCI slots

PC1 PC4

Speaker

J3/pins 33, 35, 37, 39

Cache slot

SL1

Floppy drive interface

J24

Cache slot

SL2

Parallel port

J25

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

SROM test connector

J2

N/A

Flash BIOS update disabled

J16

Pins 2 & 3 closed

 

Flash BIOS update enabled

J16

Pins 1 & 2 closed

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

16MB

(2) 512K x 36

(2) 512K x 36

(2) 512K x 36

(2) 512K x 36

16MB

(2) 1M x 36

(2) 1M x 36

None

None

24MB

(2) 1M x 36

(2) 1M x 36

(2) 1M x 36

None

32MB

(2) 1M x 36

(2) 1M x 36

(2) 1M x 36

(2) 1M x 36

32MB

(2) 4M x 36

None

None

None

64MB

(2) 4M x 36

(2) 4M x 36

None

None

64MB

(2) 8M x 36

None

None

None

96MB

(2) 4M x 36

(2) 4M x 36

(2) 4M x 36

None

128MB

(2) 4M x 36

(2) 4M x 36

(2) 4M x 36

(2) 4M x 36

128MB

(2) 8M x 36

(2) 8M x 36

None

None

128MB

(2) 16M x 36

None

None

None

192MB

(2) 8M x 36

(2) 8M x 36

(2) 8M x 36

None

256MB

(2) 8M x 36

(2) 8M x 36

(2) 8M x 36

(2) 8M x 36

256MB

(2) 16M x 36

(2) 16M x 36

None

None

384MB

(2) 16M x 36

(2) 16M x 36

(2) 16M x 36

None

512MB

(2) 16M x 36

(2) 16M x 36

(2) 16M x 36

(2) 16M x 36

CACHE CONFIGURATION

Size

SL1

SL2

512KB

256KB

256KB

2MB

1MB

1MB

8MB

4MB

4MB

Note: The sizes of the cache modules are unidentified.

CACHE JUMPER CONFIGURATION

Size

J3/pins 11 & 12

J3/pins 13 & 14

J3/pins 15 & 16

None

Closed

Closed

Closed

512KB

Open

Closed

Closed

1MB

Closed

Open

Closed

2MB

Open

Open

Closed

4MB

Closed

Closed

Open

8MB

Open

Closed

Open

CACHE ADDRESS CONFIGURATION

Size

J15/pins 1 & 2

J3/pins 3 & 4

J3/pins5 & 6

J3/pins7 & 8

512KB

Open

Open

Open

Open

1MB

Closed

Open

Open

Open

2MB

Closed

Closed

Open

Open

4MB

Closed

Closed

Closed

Open

8MB

Closed

Closed

Closed

Closed

CACHE SPEED CONFIGURATION

Speed

J3/pins 17 & 18

J3/pins 19 & 20

J3/pins 21 & 22

6ns

Open

Closed

Closed

8ns

Closed

Open

Closed

10ns

Open

Open

Closed

12ns

Closed

Closed

Open

15ns

Open

Closed

Open

CPU DIVISOR SELECTION

Divisor

J3/pins 1 & 2

J3/pins 3 & 4

J3/pins 5 & 6

J3/pins 7 & 8

2

Closed

Closed

Closed

Closed

3

Closed

Closed

Closed

Open

4

Closed

Closed

Open

Closed

5

Closed

Closed

Open

Open

6 (200MHz)

Closed

Open

Closed

Closed

7 (233MHz)

Closed

Open

Closed

Open

8

Closed

Open

Open

Closed

9 (275MHz)

Closed

Open

Open

Open

10

Open

Closed

Closed

Closed

11

Open

Closed

Closed

Open

12

Open

Closed

Open

Closed

13

Open

Closed

Open

Open

14

Open

Open

Closed

Closed

15

Open

Open

Closed

Open

16

Open

Open

Open

Closed

17

Open

Open

Open

Open