IBM CORPORATION

PC 750 TYPE 6885, 6886

Processor Pentium
Processor Speed 75/90/100/120/133MHz
Chip Set Unidentified
Video Chip Set Unidentified
Maximum Onboard Memory 192MB
Maximum Video Memory Unidentified
Cache 256/1024KB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA port, riser slot, CD-ROM audio interface, audio line in connector, audio line out connector


 

CONNECTIONS
Purpose

Location

 Purpose

Location
Audio line out connector

CN1

 Floppy drive interface

CN8
Audio line in connector

CN2

 IDE interface

CN9
PS/2 mouse port

CN3

 IDE interface

CN10
Serial port

CN4

 CD-ROM audio interface

JP1
Serial port

CN5

 On/off switch connector

J37
Parallel port

CN6

 On/off switch power supply connector

J38
VGA port

CN7

 Riser slot

SL1


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

 Factory configured - do not alter

60/66

Unidentified

»

 Factory configured - do not alter

J1

Unidentified

»

 Factory configured - do not alter

J2

Unidentified

»

 Factory configured - do not alter

J3

Unidentified

»

 Factory configured - do not alter

J4

Unidentified

»

 Factory configured - do not alter

J5

Unidentified

»

 Factory configured - do not alter

J6

Unidentified

»

 Modem answers on ring

J15

Pins 2 & 3 closed
  Modem does not answer on ring

J15

Pins 1 & 2 closed

»

 PS/2 mouse enabled

J28

Pins 1 & 2 closed
  PS/2 mouse disabled

J28

Pins 2 & 3 closed

»

 Floppy drive write protect disabled

J29

Pins 1 & 2 closed
  Floppy drive write protect enabled

J29

Pins 2 & 3 closed

»

 Password normal operation

J40

Pins 1 & 2 closed
  Password clear

J40

Pins 2 & 3 closed


DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

8MB

(2) 1M x 36

None

None

16MB

(2) 1M x 36

(2) 1M x 36

None

16MB

(2) 2M x 36

None

None

24MB

(2) 1M x 36

(2) 1M x 36

(2) 1M x 36

24MB

(2) 2M x 36

(2) 1M x 36

None

32MB

(2) 2M x 36

(2) 2M x 36

None

32MB

(2) 4M x 36

None

None

40MB

(2) 2M x 36

(2) 2M x 36

(2) 1M x 36

40MB

(2) 4M x 36

(2) 1M x 36

None

48MB

(2) 2M x 36

(2) 2M x 36

(2) 2M x 36

48MB

(2) 4M x 36

(2) 2M x 36

None

64MB

(2) 4M x 36

(2) 4M x 36

None

64MB

(2) 8M x 36

None

None

72MB

(2) 4M x 36

(2) 4M x 36

(2) 1M x 36

72MB

(2) 8M x 36

(2) 1M x 36

None

80MB

(2) 4M x 36

(2) 4M x 36

(2) 2M x 36

80MB

(2) 8M x 36

(2) 2M x 36

None

96MB

(2) 4M x 36

(2) 4M x 36

(2) 4M x 36

96MB

(2) 8M x 36

(2) 4M x 36

None

128MB

(2) 8M x 36

(2) 8M x 36

None

136MB

(2) 8M x 36

(2) 8M x 36

(2) 1M x 36

144MB

(2) 8M x 36

(2) 8M x 36

(2) 2M x 36

160MB

(2) 8M x 36

(2) 8M x 36

(2) 4M x 36

192MB

(2) 8M x 36

(2) 8M x 36

(2) 8M x 36


CPU MULTIPLIER SELECTION

Multiplier

J19

1.5x

Closed

2x

Open


 

CONNECTIONS
Purpose

Location

 Purpose

Location
Micro Channel slot

SL1

 Shared PCI/Micro Channel slot

SL4
Micro Channel slot

SL2

 Shared PCI/Micro Channel slot

SL5
Micro Channel slot

SL3

    


USER CONFIGURABLE SETTINGS

Function

Label

Position

»

 Factory configured - do not alter

JP1

Unidentified