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

DIN (Connectors) 2-5
DIP (Dual In-Line Package) 2-28
Diskettes 2-111
Diskette Drive (5 1/4") 2-110
Diskette Drive (5 1/4") Adapter
Adapter Inputs 2-106
Adapter Outputs 2-107
Block Diagram 2-90
Command Status Registers 2-100
Command Summary 2-96
Comments (Programming) 2-104
Digital Output Register 2-91
Drive A and B Interface 2-106
Drive Constants 2-104
DPC Registers 2-103
External Interface Specifications 2-109
Floppy Disk Controller 2-91
Functional Description 2-91
Internal Interface Specifications 2-108
Logic Diagrams D-35
Programming Considerations 2-94
Programming Summary 2-103
System I/O Channel Interface 2-104
Display (See IBM Monochrome Display) 2-43
Display Buffer 2-48
DISTR, DISTR (Data Input Strobe) 2-129
Divisor Latch 2-136
DMA (Direct Memory Access) 2-4
Dos Special Functions 3-19
DOSTR, DOSTR (Data Output Strobe) 2-129
Drive Constants 2-104
Drive Disable 2-132
DRQ1 - DRQ3 (DMA Request 1 to 3) 2-12
DSR (Data Set Ready) 2-131
DTR (Data Terminal Ready) 2-132
Dual In-Line Package Switches (DIP) 2-28
E
Edge Connector 2-108
Encoding 3-11
Error Recovery 3-10
ESC (Escape) 2-82
ESC A (Escape A) 2-83
ESC B (Escape B) 2-84
1-6