IBM 5150 - Page 10

Programming Considerations ....................... 2-55
Color/Graphics Monitor Adapter Direct Drive, and
Color/Graphics Monitor Adapter Auxiliary
Programming The 6845 Controller
................ 2-55
6845 Register Description
....................... 2-56
Programming the Mode Control and Status Register
... 2-57
Color Select Register
........................... 2-57
Mode Select Register
........................... 2-58
Mode Register Summary
........................ 2-58
Status Register
................................. 2-59
Sequence of Events
............................. 2-59
Memory Requirements
.......................... 2-60
Interrupt Level
................................. 2-60
I/O Address and Bit Map ....................... 2-61
Composite Interface Pin Assignment
............... 2-62
Video Connectors
............................... 2-63
Parallel Printer
Adapter .......................... 2-65
Parallel Printer Adapter Interface Connector
Connector Pin Assignment and Descriptions
of
Parallel Printer Block Diagram
..................... 2-66
Programming Considerations
....................... 2-67
Specifications
................................... 2-69
IBM 80 CPS Matrix Printer
....................... 2-70
Printer Specifications
.............................. 2-71
Setting The
DIP Switches ......................... 2-72
Functions and Conditions
of DIP Switch 1 ........ 2-72
Functions and Conditions
of DIP Switch 2 ........ 2-73
Parallel Interface Description
...................... 2-73
Interface Signals
.............................. 2-74
Parallel Interface Timing Diagram
................ 2-77
ASCII Coding Table .............................. 2-78
ASCII Control Codes ............................. 2-79
5
1/4" Diskette Drive Adapter .................... 2-89
5
1/4" Diskette Drive Adapter Block Diagram ....... 2-90
Functional Description
............................ 2-91
Digital Output Register
.......................... 2-91
Floppy Disk Controller.
......................... 2-91
Programming Considerations
....................... 2-94
Symbol Descriptions
............................ 2-94
Command Summary
............................ 2-96
Command Status Registers
...................... 2-100
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