hdmi+6502

I've now got a functioning 6502 system hooked together with a hdmi graphics card - all running on the FPGA.

This has 32k RAM, 32k ROM, an LCD display, an HDMI display (like a BBC mode 0 640x256x1bpp bitmapped in8x80x32. Uses the r6502_tc core running at 25MHz (could go faster) and a little test ROM I hacked up to give it some exercise.

Next up will be either to hack together a MOS rom and BBC basic and a keyboard adaptor (maybe via the Raspberry pi for now) or alternatively I might take an existing BBC micro system and graft on HDMI...not sure yet...I just like writing 6502 code...