A video of a demonstration program for "Pentagon 128" is pasted on the official Facebook and a demonstration of TBBlue's "profile change function" is released.
Also, the profile of "Pentagon" has a comment that it will not work with HDMI because the vertical sync frequency will be 49 Hz. (To be exact, this upward compatible machine has a VGA or HDMI terminal and it has a 640x480@60Hz screen Will it be converted?).
And the "Across the Edge" demo by demarche.
Also, for those interested, this is over the SCART cable.David Saphier
Note that this is a Pentagon demo and uses NO Next featuresJim Bagley
The HDMI and VGA are different timings, and the Pentagon ( russian clone ) needs 48hz which HDMI won't support, so if you want to run the border and colour effect timing specific games, you will need to use a SCART cableVadim Akimov
at 4:00, it is clearly seen that not the whole visible border range of the original Pentagon machine is visible. The original Pentagon had approx. 384x304 visible screen. However, even ZX-Evo does not show the whole pentagon screen.
How it should look: https://youtu.be/b-kkzl2foaQ?t=243
Although "Pentagon 128" is compatible with ZXSpectrum, it has evolved independently, and the aforementioned "demo program" adopts a "wide" resolution graphic screen.David Saphier
Normally switching between personalities has to be done via the boot menu. If you need to do this a lot, then a quicker way would be nice, so .boot! Not super special but super useful - for me anyway!
Does personality changing flash the FPGA?David Saphier
That's a good question, I believe the core is flashed to FPGA upon startup, not sure about hard reboots. Sure someone else more inclined on matter could answer that.Allen Albright
The core is not flashed... the personalities are all using the next core but have features disabled and timing changed depending on what the machine is.
There are 32 available slots to hold cores in the flash. Slot 0 is the anti-brick core that will rescue the machine if something goes wrong during a flash. Slot 1 is the zx next core and the other 30 are currently empty.