IBM 51xx PC Family Computers

This web site is not intended as an introduction to the IBM 51xx PC family of computers.
Instead, this web site is intended to be a reference for computer-savvy people who are already familiar with the IBM 51xx PC family of computers.
This web site contains information that ranges from basic to very technical.

For queries or assistance, I suggest that you seek that at the Vintage Computer Forums.





Manuals
 
IBM 4860/5140/5150/5155/5160/5162/5170
IBM Options and Adapters
IBM Hardware Maintenance Service
IBM Hardware Maintenance Reference
IBM - Some documentation errors
 
Third Party
 
4860 =  PCjr
5140 =  PC Convertible
5150 =  PC
5151 =  Monochrome Display
5152 =  Graphics Printer
5153 =  Color Display                      ( display for CGA )
5154 =  Enhanced Color Display      ( display for EGA or CGA )
5155 =  Portable PC                        ( actually a portable XT )
5160 =  XT
5161 =  Expansion Unit
5162 =  XT Model 286         ( XT-286 ) ( an AT class system, not XT )
5170 =  AT
5175 =  Professional Graphics Display      ( display for PGA )
5181 =  PC Compact Printer                     ( intended for the IBM PCjr )
5182 =  PC Color Printer


IBM 4860

Documentation
IBM 5140

Documentation


IBM 5150  (IBM PC)  
   
Documentation Power Measurements
Motherboard Switch/Jumper Settings Minimum Diagnostic Configuration
Known Problems/Issues Test of SW1 and SW2 via BASIC
Motherboard Revisions Using an AT-Class Keyboard
BIOS Revisions VGA Cards
Some Expansion Cards and Options Disk Cover Plate
Memory Map of the 640 KB to 1 MB Area Substituting the U33 BIOS ROM
RAM Information 10/27/82 BIOS - Problem of less than 4 banks of RAM
Floppy Drive Support Early Versions
Hard Drive Support External 3.5" diskette drive
Motherboard Diagrams  
Cassette BASIC  
POST and Initialisation  
   


IBM 5151

Documentation
Video Cable
CRT Heater
IBM 5152

Documentation
Power Up
IBM 5153

Documentation
Known Problems/Issues
IBM 5154

Documentation
Known Problems/Issues


IBM 5155  (IBM Portable PC)  
   
Documentation Power Measurements
Motherboard Switch/Jumper Settings Minimum Diagnostic Configuration
Known Problems/Issues Test of SW1 via BASIC
Motherboard Revisions Expansion Slot 8
BIOS Revisions Photo of Inside
Some Expansion Cards and Options Connection of CRT Display Unit to Video Card
Memory Map of the 640 KB to 1 MB Area CRT Shield Removal
RAM Information Power Supply
Floppy Drive Support External 3.5" diskette drive
Hard Drive Support  
Motherboard Diagrams  
Cassette BASIC  
POST and Initialisation  
   


IBM 5160  (IBM XT)  
   
Documentation Power Measurements
Motherboard Switch/Jumper Settings Minimum Diagnostic Configuration
Known Problems/Issues Test of SW1 via BASIC
Motherboard Revisions Using an AT-Class Keyboard
BIOS Revisions VGA Cards
Some Expansion Cards and Options Expansion Slot 8
Memory Map of the 640 KB to 1 MB Area Significant Differences to the IBM 5150
RAM Information IBM/Xebec HDD Controllers Supplied
Floppy Drive Support Hard Drive Cabling
Hard Drive Support External 3.5" diskette drive
Motherboard Diagrams  
Cassette BASIC  
POST and Initialisation  
   


IBM 5161

Documentation
Cable
Photos
IBM 5162  (IBM XT Model 286)

Documentation Battery
Known Problems/Issues Photos
BIOS Revisions  
Motherboard Diagrams  


IBM 5170  (IBM AT)  
   
Documentation SETUP Procedure
Motherboard Switch/Jumper Settings Hard Drive Type Number
Known Problems/Issues Hard Drive Cabling
Motherboard Revisions POST - Codes
BIOS Revisions POST - Some On-Screen Errors
Some Expansion Cards and Options Battery
Memory Map of the 640 KB to 1 MB Area Failures of the CMI 6426 Hard Drive
RAM Information  
Floppy Drive Support  
Motherboard Diagrams  
Cassette BASIC  
   


IBM 5175

Documentation
IBM 5181

Documentation
IBM 5182

Documentation


ROMs  
   
Images of Various ROMs EPROM Programmers
Images of BIOS ROMs for IBM 5150/5155/5160/5162/5170 EPROM Programming Services
Images of BIOS ROMs for Certain XT Clones  
Images of BIOS ROMs for Certain AT Clones  
Supersoft/Landmark Diagnostic ROMs for IBM 5150/5155/5160/5170  
   


Miscellaneous  
   
DOS Programs Commonly Failing Electronic Components (in vintage computers)
RTC Programs Changes to the ST-506/ST-412 Interface
MDA / CGA / EGA Micro Solutions Backpack CD-ROM Drive
BIOS Video Modes Transferring Files From a Modern PC to an Old PC
POST Cards History of 5150/5155/5160/5170 Motherboard Failure at the VCF
Resources at Other Internet Sites Floppy Crossover Cable - Wiring
Serial ports Timeline
DOS Microsoft Mouse
   


Out of Scope  
   
XT-IDE Card  
ESD  
Laptops - External Power Supply - Unregulated versus Regulated