List of Contents
TOPIC
PAGE
1.
The Basic Computer
4
2.
VZ-200 Memory Map
5
3.
The Keyboard Matrix
6
4.
I/O Mapping
6
5.
Cassette/Speaker/VDC Output Latch
7
6.
Video Display Modes:
A. Text/lo—res graphics mode
(mode 0)
8
B. Hi—res graphics only mode
(mode
1)
10
7.
VZ-200 Screen Control Codes
11
8.
System Pointers, etc
11
9.
Reserving Space for a Machine Code program
12
10.
Finding the Top of Your VZ-200's Memory
15
11.
Calling a Machine Code Routine from BASIC
16
12.
Useful ROM Subroutines for Assembly Programming
17
13.
VZ-200 Video Worksheets & Schematic Circuits
21
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