Crate u880 

A cycle-stepped MME U880 emulator.

Example

use u880::{Cpu, pins};

let mut cpu = Cpu::new();
let mut mem = [0u8; 1 << 16];
let mut bus = 0u64;

for _ in 0..32 {
    bus = cpu.tick(bus);
    if bus & pins::MREQ != 0 {
        let addr = pins::addr(bus);
        if bus & pins::RD != 0 {
            bus = pins::set_data(bus, mem[addr as usize]);
        } else if bus & pins::WR != 0 {
            mem[addr as usize] = pins::data(bus);
        }
    }
}

Re-exports

pub use cpu::Cpu;

pub use cpu::Revision;

pub use flags::Flags;

pub use registers::Registers;

pub use state::InterruptMode;

pub use state::State;

Modules

cpu

The U880 CPU struct and its primary interface: Cpu::new, Cpu::tick, and Cpu::reset.

flags

U880 status flags register and flag-bit constants.

pins

The U880 pin bus.

registers

U880 registers: main and shadow banks, index registers, and special-purpose registers.

state

CPU execution state: decoder step, interrupt mode, and IFF flip-flops.