Changes

== How to assemble it ==

'''You need :'''

- a "NEXYS2 500kgates" starter kit

- a "PMODSD" module for reading sdcard

- a alimentation (cause they don't give it with starter kit)

- optionally a DIGILENT USB JTAG (normally starter kit can be programmed directly by usb, but I didn't have test this way)

- a 4Go SDCARD (no more)

- program FPGA with the binary of this project, for it I use Digilent Adept software and my USB JTAG cable

- format your 4Go SDCARD in FAT32 4096 byte allocation size

- copy ROM and DSK on SDCARD

- plug PMODSD on slot JC1 of starter kit, and set all switches to 0

- plug VGA, and turn on starter kit

- plug a PS/2 keyboard, and type "cat"

- increment switch to select another disk at boot, if screen became RED, it's that binary value done by switches is too big, leds are doing a small animation when a disk is correctly loaded

- plug joystick on slot JA1 (Vcc 3.3v is common)

- plug another joystick on slot JB1 (Vcc 3.3v is common)

- plug a jack on slot JD1, one at upper GND plug, and second wire at next plug, just at left of it (if it was 3.3v Vcc, is that in fact you had to take the right one)