sz81 emulator

[Exile]

An updated version of the 2.1.8 based emulator is now available at: https://github.com/ikjordan/sz81_2_1_8

This includes the latest improvements from picozx81. In particular:

• Full Chroma 80 and 81 emulation

• Separate ZX80 and ZX81 hardware emulation loops (ZX80 emulation based on that in EO)

• Can select ZX80 4K ROM, ZX80 8K ROM and ZX81 from the configuration dialog

• vsync sound based on the Chroma implementation (i.e. sound when sync is lost)

• Optional "real-time" load and save audio and visual effects (selected as a runtime command line option)

• No longer modifies the ROM load and save routines (so no risk of incorrect pseudo-graphics)

• Dialog keyboard handling corrected (I'd broken it previously by adding extra options without updating the keyboard handling)

• Performance improvements to increase usability for RiscOS on lower spec Pis

• Extended build instructions for RiscOS

A build for RiscOS that runs on Raspberry Pi hardware is attached. Unzip the file after transferring to your RiscOS machine.