Fuzix OS 0.4: Enhancements and Supported Systems

In the latest release of Fuzix OS, version 0.4, the core kernel remains largely unchanged, but several improvements have been made. Notably, the networking layer has been modularized to enable future operations in separate address spaces on 8-bit machines. Executable formats have been unified for 8080, 8085, and Z80, allowing cross-compatibility, while 32-bit binaries now use an extended a.out format for stability.

Building the system has been streamlined with a 'make diskimage' target, simplifying the creation of bootable systems. However, the toolchains remain challenging due to their obscurity and frequent updates. The make environment has improved, though it still requires 'make clean' and 'make kclean' for processor switches and kernel tweaks.

Naming conventions have been updated, with the N8VEM project rebranded as 'Retrobrew', and distinctions made between RC2014 products and the RCbus standard. Some systems, like Pentagon and Scorpion, have been temporarily dropped due to lack of testers, while others like P112 and SocZ80 remain untested.

Fuzix 0.4 supports a wide range of processors, including the Hitachi 6303, Motorola 6803, 6502, 6809, 68HC11, and more. Each processor has its own set of supported systems, with some requiring specific compilers like gcc or cc65. The ARM M0 and ESP8266 are among the newer additions, targeting platforms like the Raspberry Pi Pico.

Numerous systems are supported, from classic machines like the Amstrad NC100 and Dragon 32 to modern retro systems like the RC2014 and Raspberry Pi Pico. Each system has specific requirements, such as memory configurations or disk interfaces, detailed in their respective README files.

Overall, Fuzix OS 0.4 offers expanded compatibility and improved functionality, making it a versatile choice for retro computing enthusiasts.