ZX Spectrum 48K rubber laptop

Fixes done:
* Upper RAM replaced by SRAM Cmos.
* Video RAM 4116 replaced by 4164, byebye +12 and -5.
* Z80 replaced by Z80Cmos.
* 7805 regulator system replaced, byebye hotter and disipation system.
* Added charger battery system. You can play and charge at same time.
* Added reset buttom.
* Added red "terminator" led operation.
* Added copper ULA disipator.
* Added 7" tft color monitor.

Specs:
* Total 880mAh drain.
* 1800mAh Battery 12V inside
* 125 minutes on average operating with full battery

Pending issues:
* All about LM1889 to erradicate +12V MO..... ;-)
* Some 4164 intermittent problems.
* Record messages in the system giving thanks to everyone who helped me and I still helping me, especially Mcleod_ideafix, Bubu, Ricco, Rich, etc ...

Видео ZX Spectrum 48K rubber laptop канала Gwyllion16