6.0 In line Assembler

In-line Assembler Overview

One of the very useful features of dflat is the in-line assembler, inspired by BBC BASIC. Key features of the assembler include;

• Standard 6502 notation
• Access to dflat variables

This is a three pass assembler - assembly code must be processed three times to ensure all references and branches are properly resolves;

• Pass 1; Unknown / uninitialised variables may be treated as zero page (so are only 2 byte instructions) rather than absolute
• Pass 2; As absolute operands are resolved this impacts forward references from pass 1
• Pass 3; All references now reflect the correct addresses after any absolute instructions have been processed