Yet another emulator - Granny Smith

[PappaDF]

The world doesn't need yet another Macintosh emulator, but we all need a hobby, right? If anyone is interested, I've just released my small hobby project on GitHub - an embryo of a browser-first Macintosh emulator called "Granny Smith". You can try it out live here:

https://pappadf.github.io/gs-pages/latest

I strongly recommend using a Chromium-based browser for now - I've noticed some mouse movement issues in Safari.

It's extremely simple by design: the CPU instruction decoder is under 550 lines, and all opcode implementations total less than 1,000 lines. It's not at all cycle-accurate, just approximate, but accurate enough to pass the MacTest motherboard and floppy hardware tests without errors.

- Background checkpointing that stores state in IndexedDB, so you can reload the browser without losing your session
- Full checkpoint download/restore via drag-and-drop
- Mount compressed disk images (e.g., *.sit.hqx) directly through drag-and-drop
- Built-in AFP file server (work in progress) for accessing browser-side files from the emulated Mac

Just a prototype, so nothing is stable and well tested (yet). More details on the GitHub page: https://github.com/pappadf/granny-smith

Feedback and bug reports are of course very welcome!

 

[Chopsticks]

I don't use any chrome based browsers myself, but i can confirm Firefox also has some mouse pointer issues, moving the the mouse pointer around seems to be 2-3 times slower on the emulation compared to my actual computer.
apart from that i was able to run system 6.0.7 fine. i only did some quick testing as i wasn't able to load any of my hdd images to do more.

 

[PappaDF]

Thanks for the feedback! This is useful information! I haven’t tested with Firefox, but it’s obvious that I should.

There isn’t a good UI for setting/configuring HD images, yet. In theory, you should be able to just drag and drop, but this hasn’t been well tested. The only alternative at the moment is to do it from the terminal (attach-hd <path> [scsi-id]). I need to add a proper machine configuration panel or dialog. I’ve just merged SE/30 and 68030 support, so some kind of machine configuration interface is also needed to switch between models as well. I will fix that.