ZX-Uno

Some people in this forum want to gift you a ZX-Uno 2M for allow you to make a Spec256 port. We need 3 versions: - Core for 2 MB externals (FULL implementation) - Core for 2 MB internals (FULL implementation) - Core for 512 KB internals (Limited implementarion - Only 48K games and perhaps not all f...

antoniovillena escribió:If yes I want to exchange by one ZX-Uno 2M

Thanks for the suggestion, but I already have a deal viewtopic.php?p=19524#p19524

For sale http://zx-pk.com/forum/viewtopic.php?f=7&t=4204

Hi vlad. Some people in this forum want to gift you a ZX-Uno for allow you to make a Spec256 port. Are you interested? Hi, antoniovillena . The more support, the higher the motivation... I need to do some more tests to give the final answer. And I would like to know what they want from the Spec256 ...

Made background support, disabled by pressing the F6 key.



I plan to support the memory of 48KB / 128K / 1MB (Pentagon mode), SounDrive, TurboSound and DivMMC.

antoniovillena escribió:So can you port it to ZX-Uno?

It is possible, but there is one small problem - I do not have ZX-Uno for porting Spec256

No. Spec256 uses a 64-bit Z80 co-processor and parallel memory to store the images. There isn't physically enough RAM or gates on the FPGA to do it. RAM Access = 17.85ns(SRAM R/W) * 8bytes(64bit) = 142.85ns(CPU R/W) + 142.85ns(Video R) = 285.71ns(3.5MHz CPU Clock) My project Spec256 uses ROM 16K + ...

Spec256 on ReVerSE-U16 How it works Why are we going to rewrite the game code if we already have the game, and all it needs are better graphics and sound? But, how can you get 256 colour modes with a Spectrum emulator instead of the colours the original games have? The idea is: in one hand we´ve go...