6502 Single Board Computer

6502 based SBC Most of the design from Grant searle original design.

The original circuit was produced by Pennuto73, thanks for the orignal work.

I have Added a jumper to allow 256k ROM giving access to two pages of ROM with a single jumper, also

re-connected the RTS line to aid with hardware connection to a PC.

I also had issues with getting the Xtal to work with the LS series, so I adjusted the 2k2 resistors and switched to

using HCT series. In theory this would also hel with using a 65c02 chip.

The circuit layout was created by me with improved silk screen markings to help make sure things like the FTDI are connected the right way!