The virtual machine you didn't ask for.
Grog is a very simplistic and naive virtual machine. The machine defines an architecture, an execution model, and an instruction set. Programs are stored in a binary file, representing the memory of the machine.
make
Create a memory file with any hexadecimal editor, such as GHex. Run the Grog Virtual Machine with this command:
./grog test-machine-1.grog
The machine will run, trace the instructions, and dump its final state:
./grog test-machine-1.grog
Reading memory from file test-machine-1.grog
Machine: Grog
Memory size: 9 bytes
Program counter: 0
Running...
Executing instruction 10
Executing instruction A0
Executing instruction 20
Executing instruction 0
Finished!
Status:
Registers: 0=2 1=0 2=0 3=0 4=0 5=0 6=0 7=0 8=0 9=0 A=0 B=0 C=0 D=0 E=0 F=0
Memory status: 10 1 A0 1 20 8 0 0 2