https://github.com/nicolasbauw/intel8080

Yet another Intel 8080 Emulator, written in Rust.
https://github.com/nicolasbauw/intel8080

8080 emulation emulator intel rust

Last synced: about 3 hours ago
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Yet another Intel 8080 Emulator, written in Rust.

• Host: GitHub
• URL: https://github.com/nicolasbauw/intel8080
• Owner: nicolasbauw
• License: mit
• Created: 2021-08-11T19:46:40.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2024-05-10T15:17:50.000Z (9 months ago)
• Last Synced: 2025-02-02T03:41:24.291Z (4 days ago)
• Topics: 8080, emulation, emulator, intel, rust
• Language: Rust
• Homepage:
• Size: 212 KB
• Stars: 5
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# intel8080

[![Current Crates.io Version](https://img.shields.io/crates/v/intel8080.svg)](https://crates.io/crates/intel8080)

[![Current docs Version](https://docs.rs/intel8080/badge.svg)](https://docs.rs/intel8080)

[![Downloads badge](https://img.shields.io/crates/d/intel8080.svg)](https://crates.io/crates/intel8080)

Yet another Intel 8080 Emulator. It passes the TST8080, 8080PRE, CPUTEST and 8080EXM tests.

Example for a small loop:

```rust

use intel8080::CPU;

let mut c = CPU::new();

c.pc = 0x0100;                      // sets pc to $100

// Here we create a small machine code program for demo purpose.

// Usually you will rather load an assembled code in memory (see below).

c.bus.write_byte(0x0100, 0x3e);     // MVI A,$0F

c.bus.write_byte(0x0101, 0x0F);

c.bus.write_byte(0x0102, 0x3d);     // DCR A

c.bus.write_byte(0x0103, 0xc2);     // JNZ $0102

c.bus.write_word(0x0104, 0x0102);

c.bus.write_byte(0x0106, 0xc9);     // RET

loop {

    c.execute();

    if c.pc == 0x0000 { break }

}

```

Debug mode outputs CPU state and disassembled code to an internal string after each execute():

```

3E 0f     MVI A,$0f

PC : 0x0003	SP : 0xff00	S : 0	Z : 0	A : 0	P : 0	C : 0

B : 0x00	C : 0x00	D : 0x00	E : 0x00	H : 0x00	L : 0x00 ...

```

Includes a "cpmloader" which loads and executes basic CP/M programs:

```

cargo run --release --example cpmrun bin/helloworld.bin

```

You can also check my [Altair 8800 / 88-SIO / teletype emulator](https://github.com/nicolasbauw/Altair8800).

The provided source code examples can be assembled with [Retro Assembler](https://enginedesigns.net/retroassembler/).

License: MIT