Introduction - Zenith Z-100 Reference Manual

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Contents
Fundion Code 15 - Return Current Video State
Function Code 100 - Select Scroging Mode
Custom Character Creation
Early Video Cards
Character Font Selection
Light Pen Polarity
Monitor Synchronization
Chapter 8

Introduction .

Configuration .
Serial Port Configuration.
Parallel Port Configuration .
Serial/Parallel Input/Output Tables .
Parallel Format
Serial Format
Interrupts .
Parallel Port
Serial Port
F unction Code 0 - Initialize the Serial I/O Port.. . . . . . . . .
F unction Code I - Send Character to the Serial Port .. . .
Function Code 2 - Receive Character from the Serial Port
F unction Code 3 - Read Communications Status ..... . . . .
Chapter 9
Introduction .
Configuration
Winchester (Hard Disk) Controller
Floppy Disk Drive Controller .
Mitsubishi Floppy Disk Drive .
Shugart Floppy Disk Drive
I nput/Output Ports ... . . . . . . . . . . . . . . . . . . . . . . . . . .
Interrupt Vector
Programming Interface Information
Drive Identification Codes .
Drive Function Calls
Function Code 0 - Reset Disk System
Function Code 1 - Read Disk Status
Function Code 5 - Format Track
Function Code 8 - Return Current Drive Parameters...
Function Code 9 - Initialize Drive Type Characteristics .
Error Status Codes
Booting an Operating System .
Serial an d Parallel Input/Output
7.39
7.39
7.40
7.42
7.42
7.42
7.43
8.1
. 8.2
. 8.2
. 8.2
. 8.3
. 8.4
. 8.4
. 8.7
. 8.7
. 8.8
. 8.8
0
. 8.9
8.10
8.10
Disk Drives
9.1
92
92
9.3
9.3
9.5
9.6
97
9.7
9.7
9.8
9.9
9.9
9.10
.. 9.11
.. 9.11
9 12
9.13