Editing Commodore BASIC (section)

==History==
Commodore took the source code of the flat-fee BASIC and further developed it internally for all their other 8-bit home computers. It was not until the [[Commodore 128]] (with V7.0) that a Microsoft copyright notice was displayed. However, Microsoft had built an [[easter egg (media)|easter egg]] into the version 2 or "upgrade" Commodore Basic that proved its provenance: typing the command <code>WAIT 6502, 1</code> would result in <code>Microsoft!</code> appearing on the screen. (The easter egg was well-obfuscated—the message did not show up in any [[disassembler|disassembly]] of the interpreter.)<ref>{{cite web|url=http://www.pagetable.com/?p=43|title=Bill Gates' Personal Easter Eggs in 8 Bit BASIC - pagetable.com|website=www.pagetable.com|access-date=8 August 2018}}</ref>

The popular [[Commodore 64]] came with BASIC v2.0 in ROM even though the computer was released after the PET/CBM series that had version 4.0 because the 64 was intended as a home computer, while the PET/CBM series were targeted at business and educational use where their built-in programming language was presumed to be more heavily used. This saved manufacturing costs, as the V2 fit into smaller ROMs.