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Lazer's Interactive Symbolic Assembler

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For Apple's 68000-based Lisa computer, see Apple Lisa.

The Lisa assembler (Lazerware's Interactive Symbolic Assembler), written by Randy Hyde in the late 1970s, is an interactive MOS 6502 assembler for Apple II computers.

The latest version of Lisa, V3.2, is known to be both interactive and fast. A syntax mistake can be reported immediately in the edit mode. Lisa can compile about 30,000 lines of code in a minute on a 1 MHz computer.

Lisa, before v.3, was able to compile SWEET16 codes, a virtual 16-bit processor implemented as part of the Integer BASIC. However, Apple II's integer ROM was replaced by Monitor ROM since Apple II+. The assempler also features "Randy's Hi-res Routines", a set of easy-to-use 2D computer graphics commands.


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