Missing flicker-free displays crash some games...

[Darknior]

Hi

I discover this problem with some games that crashing when i want to launch them.

• Zedragon: https://www.sinclairzxworld.com/viewtopic.php?f=4&t=2769&hilit=ferry
• Dark Star: https://sinclairzxworld.com/viewtopic.php?f=4&t=669
• Mazogs: http://www.fruitcake.plus.com/Sinclair/ZX80/FlickerFree/ZX80_Mazogs.htm And maybe some other i don't know ...

I write to the author of Mazogs and he explain me Retroarch does not emulate the technique used to generate flicker-free displays from the ZX80. It might simply patch the ZX80’s ROM to intercept the display driver routines, but flicker-free games use their own driver in RAM instead.

I search a little and found the original emulator has been update many times from 4 years, and now it's version is 1.15 release the 21/04/2019 ... i'm sure they've add the flicker-free.

https://sourceforge.net/projects/eightyone-sinclair-emulator/

Is it possible to have a merge update of this core with the original emulator ? Thanks a lot

[leiradel]

81-libretro only emulates the ZX81 with 16 KiB so it won't run the ZX80 rewrite of Mazogs.

Zedragon will not run because of its hardware requirements:

• UDG4ZXpand, 32k RAM at 8-40K. Optional: AY interface (ZXPand+AY, ZXpand+, MR.X, Zon-X), joystick (ZXpand+AY, ZXPand+)

Dark Star has three versions, the vanilla and the dK'tronics ones should work. Notice that the later needs the option 8K-16K Contents to be set to dK'tronics 4K Graphics ROM + 4K RAM.

[Darknior]

• Ok so bad for the ZX80 Mazogs but not so important because his Color rewriten version working fine :)

• Zedragon, i have read this too, ... really wish upgrading source code with v1.15 of source code will add it.

• Dark Star, i try them all, with all settings, i dtry "dstar-dktronic.p" with DKTronic memory option but not working too.