Orangutan Virtual Machine

There are 2 major components to the architecture of this virtual machine.

• The stack
• The registers (10 registers)

The Stack

The Stack could be seen as a array of the size 1024 , i.e an array of integers of the size 1024.

Todo : Dynamically allocated stack

The Registers

There are 10 registers in total that can be used in this virtual machine.

ISA (Instruction Set Architecture)

There are total of 14 instructions in this virtual macine

• Add Stack instruction
• Subtract Stack instruction
• Pop Stack instruction
• Push stack instruction
• Select registers instruction
• Store register value instruction
• Jump instruction
• Less than instruction
• Greater than instruction
• Equal to instruction
• Jump Less than instruction
• Jump Greater than instruction
• Jump Equal to instruction
• Add to registers instruction
• Subtract from registers

TODO list

• Dynamically growing stack
• Generating Byte Code from orangutan file
• Processing the Byte code and loading it onto the vm