Inspired Python: Game Boy Emulator: Writing the Z80 Disassembler

Game Boy Emulator: Writing the Z80 Disassembler

Let’s continue where we left off in the with a deep dive into the Game Boy’s opcodes and operands – the language of the Z80 CPU – and how to make sense of it all.

As you’ll recall, the Z80 is an 8-bit CPU with a selection of 16-bit instructions, and each instruction has an associated opcode and zero or more operands used by the instruction.

Much later on we’ll implement the specifics of each instruction, but before we do, we need to understand how the Game Boy passes information to the CPU for processing; to understand that, we’ll start out with a quick run-through of what a cartridge ROM is, before moving on to writing our first piece of the emulator: a disassembler.

Read More ->

from Planet Python
via read more