Intel 8008 emulator in pure JavaScript
Used in 8080 emulation at ASM80 online IDE
You can use 8008 also as Node.js or AMD module.
(a.k.a. The API)
- window.CPU8008 - main object (instantiated at the start - it shall change)
- CPU8008.init(memoryTo,memoryAt,ticker, portTo, portAt) - Initializes the whole system. All parameters are callback functions for port / memory access:
- memoryTo(addr,value) - store byte to given address
- memoryAt(addr) - read byte from given address
- ticker(T) - unused now. For future use
- portTo(addr,value) - write byte to given port
- portAt(addr) - read byte from given port
- CPU8008.T() - returns clock ticks count from last init (or reset)
- CPU8008.reset() - does a CPU reset
- CPU8008.set(register, value) - sets internal register (named PC, A, B, C, D, E, H, L, F, SP) to a given value (SP means S, it's for compatibility)
- CPU8008.status() - Returns a object {pc, a, b, c, d, e, h, l, f, sp} with actual state of internal registers
- CPU8008.steps(N) - Execute instructions as real CPU, which takes "no less than N" clock ticks.
- CPU8008.disasm(a, b, c) - Disassembler. Takes 3 successive values (the longest 8008 opcode takes 3 bytes). Returns array of two values - mnemo code and instruction length in bytes, eg. ["ADI 66",2].
8008 is slightly tested with qUnit - just a basic functionality at this moment
