archive.worldofdragon.org

Yes, looks like he'll definitely be there! @pernod70 - not sure who you are IRL :) Will you be coming to the event? I'm attending the Acorn event the week before so unlikely to escape the family for both weekends. From the photos on FB there's the ROM to dump, and get as many hires photos of the bo...

I've fixed the cursor keys in natural keyboard mode, and also mirrored RAM in 32K machines to fix Dunjunz. It's a bit late to make it into this weeks 0.209 release so will have to wait until 0.210 due end of June unfortunately. Haven't looked at the VDG artifacting issues yet, I need to do some read...

So it's testing both that it can modify the upper 32K of RAM in map type 1, and that that modification didn't cause a "shadow write" to the lower 32K. Makes sense. The memory handling in the SAM implementation is quite convoluted, so not that easy to add mirroring, will persevere. Out of interest, ...

Refresh rate last I checked is definitely off too (I can tell, because Dunjnuz measures it to determine whether to start up in artifacting PMODE 4 or colour PMODE 3). Just tried the Dunjunz dsk image and it crashes in dragon32 (works in dragon64), the loading screen says 'Loading (64K)' which is pr...

Ok, as I'm not a Dragon user wasn't aware of the orange-blue artifacting issue. Let me know of further test cases and expected behaviour and I'll get on to it.
Unlikely to make next week's release though. Also need to update the softlists with the latest archive additions.

robcfg wrote: ↑Tue Apr 16, 2019 5:54 am Nigel, can you make the Dragons PAL machines by default?

What suggests they are not currently PAL? The 6847 is configured for PAL. I can't verify screen refresh rate until next week though.

Azerpy wrote: ↑Fri Apr 12, 2019 9:27 pm So my question is : why arrows don't be emulated in natural mode for Dragon 32, DRAGON 64 and DRAGON 64 PLUS but are for CoCo ?

Sounds like an oversight, I'll take a look next week when I'm back from vacation.
If you have any other problems/suggestions then let me know.

Did any further details and a ROM dump ever surface for this?

Regarding the LEDs, would poking &HFF40 with values 1,2,4,8,16,32,64,128 and 0 be an adequate test? I'll be asking the owner of the cartridge to test that if it's valid. That would definitely be a good start, thanks. In my logging I'm seeing lots of different values being written to &HFF40, so it m...

Have any of you expert circuit tracers determined how the soak test cartridge works? There's not much on there, NAND gate, HEX inverter, and a 555 timer. I'd guess the timer delays it's output until the Dragon has booted, for how long? It also looks like the LED output is controlled by writing to $F...