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I'm making progress on implementing IOC device 9 on RO3.71. Once it's working on the RiscPC I can look at adding the emulation on the Pi. I've got sound coming out under DMA so it's now timed right, you can hear it's the music, but it's not 100% right so there's something wrong with the DMA buffer. ...

I've been looking at Diggers and now have it playing the intro and getting past the prompt for disk 2 on RO3.71 under the JIT under emulation - which is progress. To get this far, I botched device 9 to call the code at 100Hz so it has a regular poll interval (it should dependent on the sample buffer...

Ironically I've found it's easier to get original versions of the games running on the Pi, as the SA versions tend to try and patch the game on-the-fly using 26-bit modules and other devious means.

I'm not even sure the SA version of Diggers exists, looking at my notes it's not been confirmed.

I've now debugged the Diggers (original version) intro to see what the issues are, there are two: 1. It claims the hardware vectors directly, assuming the instructions are B xxx 2. Timing is based around device vector 9 (sound buffer change) Issue 1 can be worked around by stopping it from claiming ...

A few were ported by individuals, Chuckie Egg, Labyrinth, Jet Set Willy off the top of my head. Labyrinth has been archived, strictly speaking they're not commercial releases and were certainly not authorised, so releasing them under the project would be tricky. TBH you'd be better of running the or...

I had a quick look at where Diggers is earlier, it's working on Arc's and hangs on RiscPC. Looks like I was trying to bypass the code that locks in the Boot Script, but didn't progress it much further. I tried running it under the ARM3 JIT (on StrongARM to avoid chipset issues), which failed as it t...

I've not touched Diggers for over a year, but do recall it was a nightmare to get running on an original Arc, let alone anything beyond that. From memory, there were issues in both the loader and the game setup code that caused the game to hang. What I don't have however is the RiscPC version, which...

We tried official channels via Frontier several times, so it may well come to something like that!

Excellent talk. Good presentation and very convincing and interesting demonstration of some of the games on a Pi. Thanks, glad you liked it. Hope you can show off your successes at the next RISC OS London Show (25-Oct-2014). I'll be chatting to Bryan about this is due course, it would certainly be ...

I'll be giving a talk about the project and how the software works at ROUGOL on the 16th of June.

Here's the PowerPoint presentation I used on the day: