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Welcome to the Foenix Retro Systems' F256x series Wiki Dedicated to the WDC65C02/WDC65C816 or FNX6809 based F256x series.

Getting Started Getting Started Product Specifications Getting Started Glossary Manuals Software for 6502 Software for 65816 Emulation Technical Overview Technical Overview Hardware Firmware File Formats Memory Management IO Page Reference IRQ Kernels DIP switches Keyboard raw codes MID codes for machine identification Wifi System Maintenance System Maintenance FPGA Releases Kernel & SuperBASIC Updates Optional Upgrades Raspberry Pi Pico Update Troubleshooting Wiznet

Software Development Software Development SuperBASIC Building SuperBASIC itself C Development Assembly Code Development 65816 Processor W65C816 Processor 65816 Overview 65816 C Compilers 65816 Assembly Tutorial FNX6809 Processor FNX6809 Processor FNX6809 Overview OS-9 OS-9 Assembly Code Development OS-9 C Code Development FNX6809 Manuals FNX6809 Graphics vtio calls FNX6809 Display Codes