ZENITH DATA SYSTEMS

EXPRESS 5800 EX1200

Device Type

Mainboard

Processor

Pentium II

Processor Speed

233/266/300MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

512MB

Maximum Video Memory

1MB

Cache

256/512KB (located on Pentium II CPU)

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

32-bit PCI slots (4), floppy drive interface, IDE interfaces (2), SCSI interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, ATX power connector, RAID slot

CONNECTIONS

Purpose

Location

Purpose

Location

ATX power connector

ATX

SCSI interface

CN3

IDE interface LED

C3

IDE interface 2

CN4

Speaker

C4

IDE interface 1

CN5

Soft off power supply

C6

Floppy drive interface

CN6

Dc power connector

C7

32-bit PCI slots

PC1 - PC4

Dump switch

CN1

RAID slot

SL1

Front panel connectors

CN2

VRM connector

VRM

Note: CN2 includes mouse, keyboard VGA, serial ports (2), & parallel port.


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

Factory configured - do not alter

C1

Unidentified

»

Factory configured - do not alter

C2

Unidentified

»

Factory configured - do not alter

C5

Unidentified

»

Factory configured - do not alter

C10

Unidentified

»

Factory configured - do not alter

C11

Unidentified

»

Factory configured - do not alter

J18

Pins 1 & 2 closed

»

Factory configured - do not alter

J20

Pins 2 & 3 closed

»

Factory configured - do not alter

J26

Pins 1 & 2 closed

»

Hard drive LED select separate hard drive activity signals

J27

Pins 1 & 2 closed

 

Hard drive LED select "OR" the 2 hard drive signals

J27

Pins 2 & 3 closed

»

Flash BIOS write protect disabled

J28

Pins 1 & 2 closed

 

Flash BIOS write protect enabled

J28

Pins 2 & 3 closed

»

Flash BIOS boot block disabled

J29

Pins 2 & 3 closed

 

Flash BIOSboot block enabled

J29

Pins 1 & 2 closed

»

Password enabled

J30

Pins 1 & 2 closed

 

Password disabled

J30

Pins 2 & 3 closed

»

CMOS memory normal operation

J38

Pins 1 & 2 closed

 

CMOS memory clear

J38

Pins 2 & 3 closed

»

Factory configured - do not alter

J39

Pins 1 & 2 closed

»

Factory configured - do not alter

J40

Pins 2 & 3 closed

»

Factory configured - do not alter

J42

Pins 2 & 3 closed

»

Factory configured - do not alter

J44

Pins 2 & 3 closed

»

Factory configured - do not alter

J45

Pins 1 & 2 closed

»

Factory configured - do not alter

J46

Pins 1 & 2 closed


DIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

32MB

(1) 4M x 64

None

None

None

32MB

(1) 2M x 64

(1) 2M x 64

None

None

32MB

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

40MB

(1) 4M x 64

(1) 1M x 64

None

None


DIMM CONFIGURATION (CON'T)

Size

Bank 0

Bank 1

Bank 2

Bank 3

48MB

(1) 4M x 64

(1) 2M x 64

None

None

48MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

None

64MB

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

64MB

(1) 8M x 64

None

None

None

64MB

(1) 4M x 64

(1) 4M x 64

None

None

72MB

(1) 8M x 64

(1) 1M x 64

None

None

80MB

(1) 8M x 64

(1) 2M x 64

None

None

96MB

(1) 8M x 64

(1) 4M x 64

None

None

96MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

None

128MB

(1) 16M x 64

None

None

None

128MB

(1) 8M x 64

(1) 8M x 64

None

None

128MB

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

(1) 4M x 64

136MB

(1) 16M x 64

(1) 1M x 64

None

None

144MB

(1) 16M x 64

(1) 2M x 64

None

None

176MB

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

(1) 2M x 64

192MB

(1) 16M x 64

(1) 8M x 64

None

None

192MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

None

256MB

(1) 32M x 64

None

None

None

256MB

(1) 16M x 64

(1) 16M x 64

None

None

256MB

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

272MB

(1) 16M x 64

(1) 16M x 64

(1) 1M x 64

(1) 1M x 64

280MB

(1) 32M x 64

(1) 1M x 64

(1) 1M x 64

(1) 1M x 64

288MB

(1) 16M x 64

(1) 16M x 64

(1) 2M x 64

(1) 2M x 64

320MB

(1) 16M x 64

(1) 16M x 64

(1) 4M x 64

(1) 4M x 64

384MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

None

448MB

(1) 32M x 64

(1) 8M x 64

(1) 8M x 64

(1) 8M x 64

512MB

(1) 32M x 64

(1) 32M x 64

None

None

512MB

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64

(1) 16M x 64


CACHE CONFIGURATION

Note: 256KB/512KB cache is located on the Pentium II CPU.


VIDEO MEMORY CONFIGURATION

Note: The location of the video memory is unidentified.


CPU SPEED SELECTION

CPU speed

Clock speed

Multiplier

J34

J35

J36

J37

233MHz

66MHz

3.5x

1 & 2

2 & 3

1 & 2

2 & 3

266MHz

66MHz

4x

2 & 3

2 & 3

2 & 3

1 & 2

300MHz

66MHz

4.5x

1 & 2

2 & 3

2 & 3

1 & 2

Note: Pins designated should be in the closed position.