RPCEmu

RPCEmu is an emulator of classic Acorn computer systems, such as the Risc PC and A7000. It runs on
multiple platforms including Windows, Linux and Mac OS X

RPCEmu requires a RISC OS ROM image to work, find details of
where to find one or try an RPCEmu Easy-Start bundle.

RPCEmu should be considered Alpha Quality code. It
has many known and unknown bugs, and all files used with it should be
well backed up before using them with RPCEmu.

The following documents are available.

If you have any questions or need help, there is a RPCEmu Mailing
List, however please specify the version number
to avoid confusion. Your patches, suggestions and even bug reports are
gratefully received.

Binary Packages (Version 0.9.5)

Source Code (Version 0.9.5)

Easy-Start bundles

Download combination RPCEmu, RISC OS and harddisc Easy-Start bundles, featuring full RISC OS 3.71 and RISC OS Direct (5.27) builds.

Contributed Builds

https://github.com/Septercius/rpcemu-dev/releases

Previous Releases

Additional Downloads

Version 0.9.5 – 26/10/2024

Changes in this build

• Mouse
• Implement mouse-wheel support to scroll window contents. Based
  upon work by Daniel Clarke for Arcem.
• Floppy Disc
• Add the ability to create blank, pre formatted, floppy disc images
  from the UI.
• Restore the ability to format blank files as disc images (a regression
  in 0.9.4)
• IDE Hard Discs
• Support LBA (Logical Block Addressing) hard disc image files, based
  upon work by Phil Morris.
• Correctly detect and work around hard drive images that have the
  off by 512 byte (1 sector) bug and no longer create new hard drive
  images that have that issue when formatting new hard discs.
• Networking
• Refactor and refine the network driver
• Use up to date header files for RISC OS libraries
• Correct the usage of podule interrupts, allowing other podules
  to also handle them.
• Timing
• Improve timer accuracy of ‘intermediate’ values. Based upon work by
  Jeffrey Lee
• HostFS
• Add support for high-resolution timestamps for HostFS on 64-bit Linux
  (this was already available on Windows)

Older Release Notes

Full Changelog

We’re very happy for RPCEmu to accept code and contributions from third
parties, already many people have contributed code and we hope to
continue down this route.

The RPCEmu source is stored inside the Mercurial version control system,
Mercurial clients are available for many platforms, including (but not
limited to) Windows, Linux, Mac OS X, Solaris, BSDs. If you are used to
a different version control system, such as CVS or SVN, Mercurial (as a
distributed version control system) may seem a little odd, but there are
plenty of tutorials and advice for users coming from other systems on the
web.

The Mercurial repository is based at

http://www.home.marutan.net/hg/rpcemu

and checking out the code is as simple as

hg clone http://www.home.marutan.net/hg/rpcemu rpcemu

How to get code committed into the repository

Prepare a patch file of
the differences between your new code and the current ‘HEAD’ of the
project.

Mercurial provides the ‘hg diff’ command, which generates diff files
suitable for this.

Then post this patch file to the Stardot forum (or to us directly if you
so wish), with an explanation of what it’s for, and in the case of bug
fixes, the bug it’s meant to fix (it’s not always obvious from the code)

Generally the smaller the patch, with the most specific function or
reason, the easier the patch is to merge in, whereas a “I fixed
everything I thought was wrong” would take a very long time to verify and
test.

Patches may get edited before being committed, or if the changes required
are particularly large an updated patch may be requested of the
developer. In some rare cases it might not be possible to commit a patch,
and at that point there should be a stated reason (e.g. patch overlaps
with another patch that deprecates it, patch is too widespread to verify
(suggest breaking into smaller patches), etc).

If you have any questions, once again the Stardot forum is the best place
to ask, also, if you’re considering a particulaly large change, that
would affect a large functional area or many files, it might well be
worth getting some advice from the developers on the forum first,
incase it overlaps with other development work, or even just a suggestion
of how to accomplish it in smaller changes.

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