IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)

Parameters, 6845 Initialization 2-41
Parameter Passing, ROM BIOS 3-2
Parity Flag, 8080 Flags B-1
Pause, BIOS Cassette Logic Special Handling 3-16
Pin Connectors
P2-6 Pin Berg Strip for Light Pen Connector 2-63
Pl-4 Pin Berg Strip for RF Modulator 2-63
9 Pin Connector, Color Direct Drive 2-61
9 Pin Connector, IBM Monochrome Display 2-44
25 Pin Connector, Parallel Printer Adapter Block Diagram 2-66
25 Pin'D' Shell Connector, Asynchronous Adapter Block
Diagram 2-124
15 Pin'D' Shell Connector, Game Controller Adapter (Analog
Input Connector Specifications) 2-122
25 Pin'D' Shell Connector, Parallel Printer Adapter 2-69
5 Pin Din Connector, Keyboard Interface Connector
Specifications 2-18
15 Pin Male 'D' Shell Connector, Joystick Schematic 2-121
Planar (See System Board 2-3; Intel 8088 2-3)
Power-on Self-Test
System Board 2-4
Keyboard 2-14
Power Supply 2-33
AC Output 2-34
DC Output 2-34
Important Operating Characteristics 2-36
Over Voltage/Current Protection 2-36
Signal Requirements 2-36
Input Requirements 2-34
Power Supply Connectors and Pin Assignments 2-35
Power Supply Location 2-34
Preface i
Print Screen, Special Handling 3-16
Printer, IBM 80 CPS Matrix 2-70
Printer Specifications 2-71
Programmable Peripheral Interface (PPI) 8255A-5 2-19
Programming Considerations
Asynchronous Communications Adapter
Asynchronous Communications Reset Functions 2-133
INS 8250 Accessable Registers 2-134
INS 8250 Line Control Register 2-134
INS 8250 Programmable Baud Rate Generator 2-135
Interrupt Identification Register 2-139
Interrupt Enable Register 2-141
Line Status Register 2-137
Modem Control Register 2-142
1-14