Apple II / Apple IIgs Emulator?

Does anyone know if there were any Apple II or IIgs emulators ported to RISC OS?

Woz comes with source code. Unfortunately, Benoit will not help for a 32bit port, since he died last year. But it’s mainly C.
https://web.archive.org/web/20001004094253fw_/http://www.cybervillage.co.uk/acorn/emulation/apple/index.htm

I did a quick port of Kegs.

Can I try it Chris?

Wow! Chess with snakes and ladders.

Battle Chess!

With full animations???

You got my attention. I couldn’t get the damn thing to build. I don’t have the space to set up my IIgs or //e Platinum. I miss ProDOS and GS/OS.

e: I don’t miss DOS3.3 though. But the games were good.

@David Feugey:

Woz comes with source code. Unfortunately, Benoit will not help for a 32bit port, since he died last year. But it’s mainly C.

Ok so, I did the full old C conversion to latest DDE and 32bit libs and I can confirm it builds fine on RISC OS 5.27 on my Mini.M. !Woz starts and tries to load the ROM.

I still need to convert the ASM files, there are quite few STMFD which needs reworking.

It’s 2:16am now, I am fried after a very long week at work, so I’ll look into it again tomorrow if I have time.

!Woz was freewere and Benoit gave permissions to redistribute the Emulator with all the files, so I’ll finish the porting and put everything on my github.com, I think we should also add a note in his memory to the code if someone wants to help me with a good English writing :)

I’ll also package it for distribution for general users, what would be the best/favourite distribution these days? RiscPkg or PlingStore (or both), or just a zip and URL link?

Hope this will make someone happy here :)
Cheers!

Hope this will make someone happy here :)

Yep :)

Nota: Benoit made also another emulator: Trash80, for TRS80.
The architecture seems to be very similar to Woz.
So if you can get a look to it…

For copyright, don’t worry. I can easily contact his family.
And I already know their answer: YES.

A zip would be cool.

@ David Feugey:

Ok posted all the sources with the initial C fixes for latest DDE and 32bit on my github. Will try to do some more work tonight on the ASM.

Nota: Benoit made also another emulator: Trash80, for TRS80. The architecture seems to be very similar to Woz. So if you can get a look to it…

Sure, I actually would love to have a TRS80 Emulator on my Mini.M and co. will have a look when the Apple port is completed.

For copyright, don’t worry. I can easily contact his family. And I already know their answer: YES.

Great! can I just ask you to verify this please, a written note or something would be best. Sorry for being annoying, but these things can potentially get “naughty”, so just want to be sure, that’s all.

Also does anyone has the Floppy1 format accepted by the Woz Emulator? I managed to find a ROM image for the IIe to test code, but I don’t have the tools mentioned by Benoit to image the DOS 3.3 or ProDOS disk.

A zip would be cool.

Ok, a zip will be then :)

Ok started to work on the ASM conversion.

Also saw today there were like 6 unique cloners: Guys JFYI, the thing is still UNTESTED also because I do not have yet a DOS 3.3 or ProDos floppy image in the format required by the Woz.

Anyway the code now is in a better shape, so feedback and help finding the right Floppy image are very much welcome :)

Here it’s 3:23am so I am out for the day.

What is the format required for the disk?

@ Chris C.

The original documentation from Benoit talks about a serial port based transfer, I do not have an Original Apple II (I have a hardware reproduction on FPGA), so most likely my disk images aren’t compatible unless converted with the same approach.

Anyway Benoit talks about converting them using RS232 to a PC or an Amiga (I do have both) using CrossWorks 2.0 and !PCDir and then from that move the files to the Archimedes via MSDOS Floppy.

I do not have CrossWorks 2.0 nor !PCDir. The format may be known as ProDOS files (but I am not 100% sure) and the C source code reads them directly as files and in a serial fashion, so not much info from the C source on the specific format, but it appears a raw image, unless crossworks does something I am not aware of.

It’s should be fairly simple, however I want to make sure I have the right one to avoid having to test with the wrong format that may lead to emulator freezes which I could think caused by my changes, while they are caused by wrong bytes in memory. The emulator tends to freeze RISC OS so not the safest code ever right now.

For more details please look at the source on my github: Manual file and for the source code look at the file EmuOp in c, function stack starting from MyReconDrive function.

And thanks for offering some help, appreciate it :)

(I’m not an AppleII guy, especially not an AppleII emulator guy, but the Internet tells me)
Standard AppleII disk image formats:
.dsk, .do — 160K DOS3.3 image in physical sector layout
.po — 160K ProDOS image in logical sector layout
.2mg — .po with a 64 byte header
.nib — low level every-raw-bit-on-the-disk image for copy protected disks
.hdv — .po hard drive image

I’ve got an Apple IIgs next to me on my desk, I read through the website yesterday and he still doesn’t explain what format it’s in. I have ProDos disks. I would like to try to compile but have never compiled on RISC OS, just Linux/macOS. I’ll see if I can get GCC installed.

@ Chris C.

I would like to try to compile but have never compiled on RISC OS, just Linux/macOS.

It’s very easy, I added all you need so it’s a one-mouse-click only operation, I also replaced in the source all RISC OS libs and the way they were included to make sure it uses regular ROOL DDE libs and using their path.

BEFORE YOU START: Make sure you have an updated ROOL DDE AcornC/C++ compiler suite :)

So all you have to do is:

    1) pull down the code on a Linux system (this is so for now because RISC OS

       has not a fully working git). So do a git clone of my repo on a linux box

       (even a Linux on RPi is fine). If you have no linux and you have a macOS 

       machine then do the git clone on your macOS machine.

    2) Then share the cloned repository via Samba Server (both macOS and Linux 
       has it, look for instruction for your specific linux distro on how to install
       and share directories via SMB).

    3) Finally on your RISC OS machine (for real RISC OS HW) run Omniclient and 
       connect it to your shared directory of point #2 and voila' you can build 
       from RISC OS over OmniClient.

To start the building process:

    a) Make sure that your ROOL DDE is installed correctly and that the RISC OS 

       Filer has seen/executed !SetPaths in the AcornC/C++ directory

    b) [SHIFT] + [LEFT MOUSE] Click on the !Woz directory, you'll find in there 
       a file I have created called BuildDDE, double click on it and it will build 
       for you. 

BuildDDE configs all is needed for you and asks amu to show warnings and errors via throwback window, so you can click on them to open the corresponded source file at the line that caused the error and fix it, save and repeat the build.

If you really do not want to build or you do not have ROOL DDE then still don’t worry, the repo comes with pre-built binaries.

For who doesn’t know what to do with the ASM conversion from 26bit to 32bit I added a simple but relatively effective trick to the objasm build procedure which will help you to identify which instructions and code sequences have to be replaced/converted to be fully 32bit compliant ;)

Also in the case of converting ASM from 26bi to 32bit the warning messages will appear in throwback window, so all you have to do is click on the warning to open the correspondent file with the issue to be solved and solve it. So super handy!

Anyway, I’ll do some work on the ASM this weekend if I have time, it still needs 32bit conversion, while the C sources are all done and build fine with latest ROOL DDE (and use the right libraries).

FEW IMPORTANT NOTES:

    – If you use my source tree please make sure you always do at least a daily 

      git pull before doing anything, this is because I can work on RISC OS things 

      only when I have time and so updates may happens in an unpredictable way. 

      However generally I work on RISC OS stuff during the weekends.

    - If you want to submit a change please open a branch, push your changes and 
      open a Pull Request. Everyone's help is always very welcome :)

    - If you are not a coder and just want to test stuff, then wait until is 
      "user-test-able" and your feedback is always very welcome!

    - If you want to use git from RISC OS over Linux/macOS it's simple: Download 
      Nettle and run an ssh connection from your RISC OS machine to your Linux/macOS 
      (obviously before to do that make sure your Linux/macOS accept ssh connections!) 

If I have time and if people are interested, I could make a video of how to use git via linux on a Rpi from RISC OS etc. and how to set up this type of building environments and put it on YouTube (just let me know if it may be of interest)

Hope this helps.

@ Willard Goosey

Standard AppleII disk image formats:

Yes, but not sure Woz is using any of them, anyway I’ll try them all when the ASM part looks completed, so thanks a lot for your help! :)

FWIW, there seem to be many discs, mainly 140, 800K here:
https://archive.org/details/Apple_2_TOSEC_2012_04_23
https://archive_org/details/Apple_II_GS_TOSEC_2012_04_23
At the bottom of these pages, suggestions for further useful resources.
Perhaps you found this place already and it only complicates matters?
https://mirrors.apple2.org/za/ftp.apple.asimov.net/emulators/applewin/
Find the file apple18j/zip (or less). !Virtu accepts it, more or less.

@ Jan De Boer

FWIW, there seem to be many discs, mainly 140, 800K here:

Awesome! Thanks a lot! :)