Firmware v20221117

• Added 14MHz mode (with wait-states);
• Changed PS/2 keyboard mapping:
  • Pause has been moved from F12 to F1;
  • Reboot has been assigned to F10 and F12 (but still present on Ctrl-Alt-Del / Ctrl-Alt-Backspace)
• Improved compatibility with slower RAM chips;
• Fixed sticking keys on some PS/2 keyboards;

Firmware v20220822

• Add SpecDrum sound device;
• Fix allram mode;
• Fix random garbage on screen on Zero PCB;
• Improve turbo modes reliability for Zero PCB.

Firmware v20220701

• Fix random screen garbage on some fpga/sram chips
• Fix kempston port decoding - add #DF port for some rare games
• Fix #1FFD +3 port
• Make colors without intensity bit a bit darker
• Add build for zero rev.A pcb