granite

Granite is a PC emulator written in C++23.

Requires libglfw3.

Should compile on any platform that supports C++23.

What works

• Runs through 8088 MPH and Area 5150 without crashing or freezing
• Supports GLaBIOS (PC & XT version) + FreeDOS for a fully open source stack
• Uses glfw3 for video and miniaudio for audio
• Working games include Stunts, Grand Prix Circuit, Wolfenstein 3D CGA version, Keen 1, Keen 4 (with a scrolling bug)

Done

• 8088/8086/80188/80186. Not cycle correct, but the prefetch queue is emulated.
• Partial 286 protected mode. Award 2.07A boots.
• CGA and EGA working 99%
• Floppy drive and arbitrary hard disk sizes. (Automatic ROM patching for Xebec)
• PC Speaker, AdLib (OPL2), Sound Blaster, Creative Music System
• Bus mouse

To do

• VGA / VESA modes
• 286 (protected mode) / 386 / 486
• FPU
• Sound Blaster AWE32
• "Dumb mode" MPU-401 passthrough to the OS's MIDI interface.
• Adjustable resolution and filtering options
• Overlay window when pressing F12
• Serial and parallel ports with passthrough to host