There is unfortunately not very much information about the Bit90. I received an email from Mark from Traralgon who offered me this machine. When he contacted me, I had never heard of this machine so I was pretty excited to learn all about it.
What I did learn that the machine was some kind of Z80 machine that was based on the Colecovision hardware.The other reference had a bit more information but it was quite sparse. This made it even more interesting a find.
The box was interesting. You can see the Bit 90 machine in the corner with what appears to be Atari 2600 cartridges, however the graphics on the screen are way more advanced than the 2600 offers, which made me consider the Colecovision as factual.
Unfortunately, the machine came with NO MANUAL and the box does not provide any insight into the machines capabilities.
As you can see, the ROMs next to each other do not look original. The HM6116P static ram chip has also had its legs mangled and soldered to this additional circuit.
This little unknown circuit board is attached near the power supply and nicely wrapped in gaffa or duct tape.
The whole setup was very painless. That wraps up my initial play with the Bit 90 but I will no doubt delve deeper once I get the keyboard working. What a great find! If anyone knows the whereabouts of a manual that I can read, it would be most appreciated.