PC general purpose interface

Finally I have something that works!
For now I can only connect via usb serial, and use the pheripheral bus, a/d and d/a converters. the I2C bus is protocol is still not implemented, and the FT245 interface needs to be implemented as well.

I've decided to ditch the CPLD and use the PSoC4 instead. The plan is to have it working both in usb serial mode, or for a faster data stream with the FTDI module.

Maybe I should ditch the CPLD and use a PSoC4 instead...
With the CPLD I would have to use a dedicated USB interface IC.
When using the PSoC4 I can use any kind of serial interface, and also the dedicated usb chip. Along with the extra features that can be found in the PSoC4.

Working on the first prototype, which will use parts that I currently have in my drawer, nothing fancy yet, just to test the concept. For start I was thinking about using the FT245 USB interface and a Xilix CPLD for control.