Programming with Ophis

Michael Martin

Copyright © 2006-7 Michael Martin

Table of Contents

Why "Ophis"?
Getting a copy of Ophis

A note on numeric notation
Producing Commodore 64 programs
Related commands and options
Writing the actual code
Assembling the code

Labels and aliases

Temporary labels
Anonymous labels
Aliasing

Headers, Libraries, and Macros

Header files and libraries

Macro definitions
Macro invocations

Example code

Character maps

Local variables and memory segments

Expressions

Advanced Memory Segments

The Problem
The Solution
Where to go from here

Example Programs

tutor1.oph
tutor2.oph
c64-1.oph
kernal.oph
tutor3.oph
tutor4a.oph
tutor4b.oph
tutor4c.oph
tutor5.oph
tutor6.oph
c64-2.oph
tutor7.oph

Ophis Command Reference

Command Modes

Basic arguments

Numeric types
Label types
String types

Compound Arguments

Memory Model

Basic PC tracking
Basic Segmentation simulation
General Segmentation Simulation

Defining Macros
Invoking Macros
Passing Arguments to Macros
Features and Restrictions of the Ophis Macro Model

Assembler directives

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