NoSTalgia Atari ST Emu für Apple Macintosh ...

[Lukas Frank]

... für Apple Silicon

# NoSTalgia - Atari ST Emulator for Apple Macintosh

By Philippe Gerin (ph.gerin@gmail.com)

Website: https://nostalgia.pghsoftware.be

## What is it?

NoSTalgia is an Atari ST emulator for Macintosh. You can use it to run your Atari ST software on your Mac.

## How to use it?

The emulator needs a copy of the Atari ST ROM to function.

TOS 1.x and 2.x can be used with this release of the emulator. TOS 1.4 is recommended for running games. Original Atari ST floppy disks cannot be read directly by the Macintosh. Use .ST or .MSA disk images.

### Hard Disk Emulation

NoSTalgia uses a built-in driver for Hard Disk emulation and VDI resolution (640x400x16).

The emulator will boot on the hard drive (C:) if no disk image is inserted in drive A:. The hard disk requires TOS 1.4 or better.

To set up a hard disk:
1. Create the hard disk image using the built-in menus
2. Mount it and relaunch the emulator
3. Activate the hard disk and install the disk icon in the GEM Desktop
4. Don't forget to save the Atari Desktop

### ACSI Hard Disk

ACSI hard disk images are supported. Use AHDI 5.0 to install the driver on the disk image.

### Input

There is only one joystick for now, configurable in the preferences.

The right button of the ST mouse is emulated by Cmd-clicking and the Help key by F12.

### Debugger

The built-in debugger has the following options:
- Breakpoints
- Step/Step Over execution
- Trace
- Hardware monitoring
- System vectors monitoring

## Supported Features

- MC68000 CPU
- ST RAM from 512KB to 4MB
- Video Shifter (320x200, 640x200 and 640x400)
- VDI mode 640x400x16
- Sound and sampled sounds (YM2149)
- MFP 68901 (Timers A-D)
- ACIAs
- IKBD: keyboard, mouse and joystick
- All interrupts with priorities
- FDC supporting .ST and .MSA format disk images
- ACSI hard disk images with AHDI 5.0
- Rasters (Low and Medium resolution)
- Overscan (top/bottom)
- Blitter
- Hard disk drive with built-in driver (TOS 1.4 required)
- RTC

## Not Emulated

- Serial port

## Software Status

This application is freeware, but feel free to send something to encourage continued development:

- Technical docs
- A postcard
- A bottle of wine or beer
- A donation via [PayPal](https://www.paypal.com/donate/?hosted_button_id=GBWJPUEHN4UNS)

The software can be freely duplicated and distributed provided that this README file is included.

## Contact

Philippe Gerin
Rue de Baurieux, 4A
B-1490 Court-Saint-Etienne
Belgium

Email: info@pghsoftware.be