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PC SERVER 300 (TYPE 8640) ONO, 1NO, 1NJ, ONJ

IBM CORPORATION

PC SERVER 300 (TYPE 8640) ONO, 1NO, 1NJ, ONJ

Processor

80486SX/80486DX/80486DX2/80486DX4/P24T

Processor Speed

25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

128MB

Maximum Video Memory

None

Cache

128/256KB

BIOS

Unidentified

Dimensions

355mm x 304mm

I/O Options

32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2)

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

PS/2 mouse port

J2

IDE interface 1

J21

Speaker

J5

IDE interface 2

J22

Parallel port

J8

Power LED

W12

Floppy drive interface

J9

PCI IDE interface LED

W39

Serial port 2

J10

ISA IDE interface LED

W46

Serial port 1

J11

32-bit PCI slots

PC1 PC3

USER CONFIGURABLE SETTINGS

Function

Label

Position

Secondary cache write select write back

W1

Pins 2 & 3 closed

 

Secondary cache write select write through

W1

Pins 1 & 2 closed

Internal cache write select write through

W4

Open

 

Internal cache write select write back

W4

Closed

BIOS normal operation

W6

Pins 2 & 3 closed

 

BIOS recovery mode

W6

Pins 1 & 2 closed

Factory configured - do not alter

W8

Closed

PS/2 mouse enabled

W10

Closed

 

PS/2 mouse disabled

W10

Open

 

DPU generates parity

W17

Pins 1 & 2 closed

 

CPU generates parity

W17

Pins 2 & 3 closed

DPU parity error disabled

W18

Pins 2 & 3 closed

 

DPU parity error enabled

W18

Pins 1 & 2 closed

Cache enabled

W21

Open

 

Cache disabled

W21

Closed

PCI IDE IRQ14 enabled

W35

Closed

 

PCI IDE IRQ14 disabled

W35

Open

PCI IDE PCI INT A disabled

W37

Closed

 

PCI IDE PCI INT A enabled

W37

Open

PCI IRQ15 disabled

W38

Open

 

PCI IRQ15 enabled

W38

Closed

 

ISA IDE IRQ select IRQ14

W42

Pins 1 & 2 closed

 

ISA IDE IRQ select IRQ15

W42

Pins 2 & 3 closed

SIMM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

4MB

(1) 1M x 36

None

None

None

8MB

(1) 2M x 36

None

None

None

8MB

(1) 1M x 36

(1) 1M x 36

None

None

12MB

(1) 2M x 36

(1) 1M x 36

None

None

12MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

None

12MB

(1) 1M x 36

(1) 2M x 36

None

None

16MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

None

16MB

(1) 2M x 36

(1) 2M x 36

None

None

16MB

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

20MB

(1) 4M x 36

(1) 1M x 36

None

None

20MB

(1) 2M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

24MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

None

24MB

(1) 4M x 36

(1) 2M x 36

None

None

24MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

None

28MB

(1) 4M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

32MB

(1) 8M x 36

None

None

None

32MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

None

32MB

(1) 4M x 36

(1) 4M x 36

None

None

32MB

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

36MB

(1) 8M x 36

(1) 1M x 36

None

None

40MB

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

None

40MB

(1) 8M x 36

(1) 2M x 36

None

None

40MB

(1) 4M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

44MB

(1) 8M x 36

(1) 1M x 36

(1) 1M x 36

(1) 1M x 36

48MB

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

None

48MB

(1) 8M x 36

(1) 4M x 36

None

None

48MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

None

56MB

(1) 8M x 36

(1) 2M x 36

(1) 2M x 36

(1) 2M x 36

64MB

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

None

64MB

(1) 8M x 36

(1) 8M x 36

None

None

64MB

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

80MB

(1) 8M x 36

(1) 4M x 36

(1) 4M x 36

(1) 4M x 36

96MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

None

112MB

(1) 4M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

128MB

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

(1) 8M x 36

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

CACHE JUMPER CONFIGURATION

Size

W5

W22

W23

128KB

Open

Closed

Open

256KB

Closed

Open

Closed

TAG CONFIGURATION

Type

W24

W26

 

7-bit

Open

Closed

 

8-bit

Closed

Closed

9-bit

Closed

Open

 

Reserved

Open

Open

CPU SPEED SELECTION

Speed

W16

W20

25MHz

Open

Closed

33MHz

Closed

Open

50iMHz

Open

Closed

66iMHz

Closed

Open

75iMHz

Open

Closed

100iMHz

Closed

Open

CPU TYPE SELECTION

Type

W2

W3

80486SX

Pins 2 & 3 closed

Closed

80486DX

Pins 1 & 2, 3 & 4 closed

Closed

80486DX2

Pins 1 & 2, 3 & 4 closed

Closed

80486DX4

Pins 1 & 2, 3 & 4 closed

Closed

P24T

Pins 1 & 2, 3 & 4 closed

Open

CPU MULTIPLIER SELECTION

Multiplier

W33

80486DX4

Pins 1 & 2 closed

80486DX4 (2x)

Pins 2 & 3 closed

80486SX/DX/DX2/DX4 (3x)

Open

IDE DMA CHANNEL SELECTION

Channel

W43

PIO transfer

Open

 

6

Pins 1 & 2 closed

 

7

Pins 2 & 3 closed

PCI IRQ JUMPER SELECTION

Note: The jumper settings for J101 are unidentified.