A simple KC85/2, /3 and /4 emulator for Windows, macOS and Linux, written in Zig. Uses the sokol headers for platform abstraction.
Read more about the KC85 computer series here:
- https://en.wikipedia.org/wiki/KC_85
- https://floooh.github.io/virtualkc/p010_kc85.html
- https://floooh.github.io/2017/01/14/yakc-diamond-scroll.html
Some implementation notes.
Build
With Zig version 0.9.0, on Windows, macOS or Linux:
zig build
The default debug version will usually be fast enough, to build with optimizations use any of:
zig build -Drelease-safe=true
zig build -Drelease-fast=true
zig build -Drelease-small=true
(NOTE: on Linux you also need to install the ALSA, X11 and GL development packages)
Build and start into KC85/2, /3 and /4
zig build run-kc852
zig build run-kc853
zig build run-kc854
Run zig build --help to see the remaining build targets.
NOTE: when running any of the games, turn down your sound volume first. The raw square-wave sound can be a bit "aggressive". You have been warned ;)
Run Digger
zig build run-kc853 -- -slot8 m022 -file data/digger3.tap
Press [Enter] to start a new game round, and [Esc] to continue after you died. Use the arrows keys to navigate.
Run Jungle
zig build run-kc853 -- -slot8 m022 -file data/jungle.kcc
Navigate with arrow keys, jump with [Space].
Run Pengo
zig build run-kc853 -- -file data/pengo.kcc
Navigate with the arrow keys, continue running against an ice block to push or destroy the block.
Run FORTH on the KC85/4
zig build run-kc854 -- -slot8 m026 data/forth.853
On the KC85/4's command line, first activate the module, and then start Forth:
switch 8 c1[Enter]
forth[Enter]
(the characters will appear uppercase, don't worry, that's normal)
Misc Stuff
For an instant nostalgia kick, start the KC85/4:
zig build run-kc854
...and then type this into the KC85/4 command line.
Make sure your audio volume isn't silent, but don't turn it up too much!
save f000 f800[Enter]
...type anything for the name, and hit Enter again :D