Gigatron Hackers

Actually, ASIC costs are coming down. They now can do smaller orders by putting different products on the same wafer. I, myself have considered coming up with an advanced Gigatron (on FPGA) with hardware video and a framebuffer, maybe a hardware PSG, maybe a programmable light sequencer that can be ...

I am not sure, but I think others are using Photoshop, reducing the palette, maybe exporting as RAW, and maybe taking a hex editor or something to dump in the values.

That sounds like a good idea for this type of implementation. It would be nice to have a way to switch modes and to remap the color signals to where you can keep the D/A converter as it is, but output it as green/amber/white. Yeah, that could be a nice setup for a DOS-like (or CPM-like) OS and be go...

It might not help much, but you could try making a skip-carry adder. Just replace the upper nibble adder with 2 adders with the carry-in line on one tied to Vcc and the other carry-in tied to the ground. Use the carry-out from the low nibble to drive a multiplexer that controls which high-nibble add...