I've updated the operating system for my "SBC-2" single board computers. It now supports the extended opcoded of the WDC 65C02S MPU. It will properly disassemble and assemble these newer opcodes.

Also, I've updated my "65C02 Simulator for Windows" to properly simulate these opcodes. The sim's built-in OS was updated with the same OS used on the SBC-2's.

To summarize the OS: It contains the basic reset and interrupt/BRK handlers, I/O to a terminal, a memory manager (move, view, fill, execute), a disassembler, a mini-assembler, an integrate Intel-HEX & Xmodem-CRC uploader, and Lee Davison's Enhanced-BASIC interpreter. It all fits into 16K of program space. The source code is available so you can easily modify it to suite your needs.

Check it out!

Sorry about the banner ads, its the cost of using a "Free" web site.
http://65c02.tripod.com/

Daryl