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PB 386 25 Rev. D Motherboard Layout

Sockets
Jumpers
Connectors
 

PB 386 25 Rev. D Sockets

U13

 DS1287 REAL TIME CLOCK BATTERY

U14

 8210

U25

8210

U62

 8250265

U63

 458195-001

U64

 8237A

U72

 80386 CPU

U74

 80387 MATH CO-PROCESSOR (OPTIONAL)

U98

 458196-001 BIOS

U100

 8237A

U138

 458197 BIOS
 

PB 386 25 Rev. D Jumpers

Note
Indicates default settings.
 

SIMM Speed

 E1-E2 100ns
E4-E5

SIMM Type

 E55-E56 Static-Column
E53-E54 Fast Paged
E55-E56
NONE RAS/CAS

SIMM Size

 E7-E8 256k SIMM
E10-E11
E8-E9 1MB SIMM
E11-E12

Total RAM

 NONE 1MB
E61-E63 2MB
E60-E62 4MB
E60-E62 8MB
E61-E63

ROM Size

 E57-E58 64k
E58-E59 128K

Keyboard Reset

 E34-E35 ENABLED
E35-E36 DISABLED

Math Coprocessor

 E28-E29 Installed
E29-E30 Not Installed

Monitor Type

 E41-E42 Color
E40-E41 Monochrome

Printer

 E16-E17 Leading Edge

Acknowledge

 E17-E18 Trailing Edge

Parallel Port

 E13-E14 LPT1 Enabled
E14-E15 LPT1 Disabled
E19-E20 LPT2 Enabled
E20-E21 LPT2 Disabled

UNIX Mode

 E37-E38 UNIX system
E38-E39 Non-UNIX

Serial Port

 E22-E23 COM1 Enabled

Selection

 E23-E24 COM1 Disabled
E25-E26 COM2 Enabled
E26-E27 COM2 Disabled
 

PB 386 25 Rev. D Connectors

Note
J10C is a 25-pin version of J10B serial 2. 
Either connector may be used, but not both.
 

J10A

25-Pin Parallel Port

  
Pin 1= Pin 1 on DB25 Pin 2= Pin 14 on DB25
Pin 3= Pin 2 on DB25 Pin 4= Pin 15 on DB25
Pin 5= Pin 3 on DB25 Pin 6= Pin 16 on DB25
Pin 7= Pin 4 on DB25 Pin 8= Pin 17 on DB25
Pin 9= Pin 5 on DB25 Pin 10= Pin 18 on DB25
Pin 11= Pin 6 on DB25 Pin 12= Pin 19 on DB25
Pin 13= Pin 7 on DB25 Pin NC= Pin 20 on DB25
Pin 15= Pin 8 on DB25 Pin 14= Pin 21 on DB25
Pin 17= Pin 9 on DB25 Pin 16= Pin 22 on DB25
Pin 19= Pin 10 on DB25 Pin 18= Pin 23 on DB25
Pin 21= Pin 11 on DB25 Pin 22= Pin 24 on DB25
Pin 23= Pin 12 on DB25 Pin 24= Pin 25 on DB25
Pin 25= Pin 13 on DB25 Pin 26= Pin NC on DB25

J10B

2 9-Pin Serial Ports
Serial 1 (COM1) Serial 2 (COM2)
Pin 1= Pin 1 on DB9 Pin 10= Pin 1 on DB9
Pin 2= Pin 6 on DB9 Pin 11= Pin 6 on DB9
Pin 3= Pin 2 on DB9 Pin 12= Pin 2 on DB9
Pin 4= Pin 7 on DB9 Pin 13= Pin 7 on DB9
Pin 5= Pin 3 on DB9 Pin 14= Pin 3 on DB9
Pin 6= Pin 8 on DB9 Pin 15= Pin 8 on DB9
Pin 7= Pin 4 on DB9 Pin 16= Pin 4 on DB9
Pin 8= Pin 9 on DB9 Pin 17= Pin 9 on DB9
Pin 9= Pin 5 on DB9 Pin 18= Pin 5 on DB9
Pin 23= Pin - on DB9 Pin 23= Pin - on DB9
Pin 24= Pin - on DB9 Pin 24= Pin - on DB9

J10C

25-Pin Serial Port (COM2)
Pin 1= Pin - on DB25 Pin 13= Pin 7 on DB25
Pin 3= Pin 2 on DB25 Pin 14= Pin 20 on DB25
Pin 5= Pin 3 on DB25 Pin 15= Pin - on DB25
Pin 7= Pin 4 on DB25 Pin 18= Pin 22 on DB25
Pin 9= Pin 5 on DB25 Pin 24= Pin 25 on DB25
Pin 11= Pin 6 on DB25

J9

Keyboard Connector

J17

Power Supply (PS1/2)

J18

Power Out

J16

Reset

J19

Speaker

J20

Keylock