By popular demand, I am releasing the firmware I have created so far while attempting to hack my NABU computer into a stand-alone system. Lots more terminal functions have been implemented. There is now a cursor, and backspace works. This firmware is in a rough, early state, with very limited functionality so far. But I get people asking for copies of it all the time. So here it is.

The firmware will be available in both Z80 Assembly format and assembled Intel Hex format, ready to be burned into an EEPROM. Please visit [ Ссылка ] for more information and to download the firmware.

Parts & Equipment Used In This Series:
DTech USB to RS422 RS485 Serial Port Adapter Cable [ Ссылка ]
XGecu T48 [TL866-3G] EPROM Programmer [ Ссылка ]
Dovewill 1pc 28-pin Test Universal ZIF IC Socket [ Ссылка ]
10pcs Male Header Pin, 40 Pin Header Strip (2.54 mm) [ Ссылка ]

Useful Resources:
The NABU Computer Technical Manual [ Ссылка ]
AY-3-8910 Programmable Sound Generator Datasheet [ Ссылка ]
TI9900 Series Video Display Processors Data Manual [ Ссылка ]
The Z80 CPU User Manual [ Ссылка ]

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