IBM 5150 Hardware Reference Manual page 11

Progranuning Summary ............................ 2-103
5 1/4" Diskette Drive Adapter Internal Interface
5 1/4" Diskette Drive Adapter External Interface
DPC Registers ................................. 2-103
Drive Constants ................................ 2-104
Comments ..................................... 2-104
System I/O Channel Interface ...................... 2-104
Drive A and B Interface ........................... 2-106
Adapter Outputs ............................... 2-106
Adapter Inputs ................................. 2-107
Specifications ................................... 2-108
Specifications ................................... 2-109
5 1/4" Diskette Drive ............................. 2-110
Diskettes ........................................ 2-111
Mechanical and Electrical Specifications ............ 2-112
Memory Expansion Options ...................... 2-113
Operating Characteristics .......................... 2-113
Memory Module Description ....................... 2-114
Memory Module Pin Configuration ................. 2-114
Switch Configurable Start Address .................. 2-115
Game Control Adapter ........................... 2-117
Game Control Adapter Block Diagram .............. 2-117
Functional Description ............................ 2-118
Address Decode ................................ 2-118
Data Buss Buffer/Driver ........................ 2-118
Trigger Buttons ................................. 2-118
Joystick
Po~tions
.............................. 2-118
I/O Channel Description .......................... 2-119
Interface Description .............................. 2-119
Joystick Schematic ................................ 2-121
Game Control Adapter (Analog Input) Connector
Specifications ................................... 2-122
Asynchronous Communications Adapter .......... 2-123
Asynchronous Communications Adapter Block
Diagram ....................................... 2-124
Modes of Operation ............................... 2-125
I/O Decode for Communications Adapter ......... 2-125
Interrupts ...................................... 2-126
Interface Description .............................. 2-126
Current Loop Interface .......................... 2-127
Voltage Interchange Information .................. 2-128
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