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But guys, I just realized that I have already all pieces of the puzzle - the 'improved' ROM1.1 form the #OricExos, the BOOTER (multi-FDC booter (FloppyBuilder will work too)), some glue routines, etc., So, it can be done! Wait for the demo... and give your suggestions which games/apps snapshots to ...

Maybe I miss understood something, but why not simply do : CLOAD"Encounter" SAVE"ENCOUNTER" That's what I did with the result below... With Sedoric, yes, but here it's a FloppyBuilder project, there's no DOS, and the system ROM is not initialized. EDIT: Also, I want to load the ...

I wonder what's the format of the snapshots.

I loaded Encounter.tap and saved a snapshot, ended up with a 116 912 bytes long Encounter.sna

Multi-part and game with customer loaders are always going to be difficult without patching. In this particular case, I was considering if it would be possible to store the original Encounter game on the floppy, so people could do like what I did for The Hobbit: The possibility to launch the origina...

I remember I asked this question a long long time ago, but could not find the thread with the answer, so I'm going to ask here again. Assuming a Microdisc or Jasmin drive and the access to the overlay memory, and a single load game, what I'd like to do is: - Load a ROM (1.0 or 1.1) from disk - Load ...

65816!

Is it still running at 1mhz, or have you found a way to make it run faster than 1mhz now and then?

So today I learned - don't put WD1770s straight on the bus, especially if its as hostile as the Oric's :lol: Indeed! #Oric is full with bad HW design examples and the worst one is to leave the CPU buses unbuffered and open to this cruel world :lol: Question: A number of people are trying to make re...

Made a small video with a summary of the current state of what the game looks like.

The main difference between TEXT and HIRES is that the ULA does two actual memory lookups when it need to display TEXT on screen (first read the character, then read the data for this specific character on this specific line of the screen), while in HIRES it technically only needs a single look-up t...

I'm dying to know which design choice came first for using the 4069: Was it first for Phi2 delay then second for A0-3 clamping, or the othe way around? The mixing of logic types makes it hard to follow. It would be very interesting to see a Jasmin checked with a scope before and after that Phi2 cir...

At some point I was imagining an Atmos modification to have a wider case, with a built-in numpad, but for practical reasons it would have been using modern cherry switches, the difficulty was to make the keycaps with the proper colors and markings, including the weirdly shaped SHIFT and RETURN keys ...

You can find all the Cumulus related documents there:
https://github.com/Dhebug/osdk_svn_impo ... re/cumulus

I don't have the technical knowledge to answer these questions, but all I can say is that: - Quite a few Oric require a bus amplifier to work properly with external devices, the "Cumulus" device comes with its own ampli-bus directly on the connector, as an example. - I believe the Microdis...

Cool, well done

There's a section about the RESET on the Service Manual (page 35):
https://library.defence-force.org/index ... ch=service