68060 Emulation for C-Net Amiga

[hendrb01]

I decided to try utilizing the 68060 emulation on the BBS to see if I could eek out any performance increases from the 68040.. I had wanted to use this in the past (I now have the ability without the cost overhead of a very niche and expensive Amiga hardware upgrade!). However I had always run into a GURU Meditation error on reboot and just set it aside. Until Bucko mentioned that he was running it under AmiBerry. So I figured I would give it a shot.

The reason I was getting a Guru Mediation is unlike other CPU accelerators (020 - 040), which will drop into either a 68000 mode or as with real hardware use the real 68000 from the Amiga (Without the speed increase of the 060 obviously.).

Lucky for us the 68060 libraries are available on AmiNet (And also on my BBS to download). < I would put them here as well, but then you wouldn't stop by my BBS (You will probably just go to AmiNet anyway, but a SysOp has to try!)

So, lets actually go through the steps of installing the 68060 libraries and enabling the CPU emulation on WinUAE...
NOTE- I am assuming you use either some kind of directory utility like DIROPUS, or DiskMaster2 or are familiar with uncompressing archives from the command line (CLI). I use DiskMaster2 in these instructions. This great utility is also available on the BBS for download.

- Either Download MMULib.lha from The Rat's Den BBS or AmiNet.
- Place it somewhere you can easily find it and it is accessible to the emulated Amiga from Windows.

- With WinUAE running, quit C-Net Amiga (If running).
- Load DiskMaster2

You can bring up both of these directories however you like, I have the path where the MMULib archive is present on the left, and the destination (RAM:) on the right.

DiskMaster2 - Directories.jpg (405.94 KiB) Viewed 307 times

- Click on MMULib.lha on the left and then click Copy. You will see i placed in our temporary working directory (RAM:)

MMULib archive.jpg (46.74 KiB) Viewed 307 times

- Double Click on the MMULib.lha fil on the left hand side. It will automatically decompress if you have LHA present in your C: directory.

MMULib Decompressed.jpg (61.4 KiB) Viewed 307 times

- Now, double click the MMULib directory on the right hand side (RAM:) and locate the Libs directory.

- Now on the left hand side navigate back to the Root of your Hard Drive, or type LIBS: in the path window.
- On the right hand side click on 68060.library and click copy.

*** At this point backup any 680x0.library file that may be present in your LIBS: directory. The easiest way to do this, on the right hand side either type in the name of your main Hard Drive (DH0:), or navigate back to the Root level. Click MakeDir in the center and name the new directory anything you want (Libraries-OLD). Now select the 680x0.library file you wish to backup on the left and click Move.

DiskMaster2 - Delete older Library.jpg (386.45 KiB) Viewed 307 times

You should now be left with only the 68060.library in your Libs: directory.

Now we need to actually configure WinUAE to emulate the 68060 processor.

- Press f-12 to go to the WinUAE configuration screen.
- Select CPU Settings on the left and set your configuration to match this screenshot.
* NOTE: The MMULib documentation states you must have an MMU present (The 68060 has an internal MMU, which is why I am chancing enabling JIT in this example. So far so good. Use at your own risk!)

WinUAE - CPU Settings.jpg (249.05 KiB) Viewed 307 times

- Test the configuration by clicking on the Reset button (NOT Restart) on the bottom of the WinAUE screen.

If everything worked as advertised your Amiga should now be rebooted and either the BBS loading - if configured), or you can now load C-Net.

Once you are happy everything is functioning normally, you can save the new configuration settings.

- Press F-12 Again and select Configurations on the left and resave the configuration file as anything you want.

WinUAE - Save configs.jpg (187.08 KiB) Viewed 307 times

I hope you find these instructions useful, if you think of anything to add, or wish to recommend corrections please feel free to respond!