Urgent! .. need help in interfacing FPGA with PC

[Altera_Forum]

Hey All;  

 I need any way to interface my Altera DE2-70 FPGA with a PC,  I'm gonna to program it with a dsp-processor and then use my processor by sending instructions from an emulator(java) on the PC, what's the easiest way to do that ?? n from where should I start ?   Thaanks in advance  Isra2

[Altera_Forum]

easiest is probably with a USB serial port on your PC into the RS-232 port of the DE-2. i would add a Nios with a UART to decode ASCII messages into instructions for your processor.

[Altera_Forum]

Thaanks for ur quick reply, but how will I let RS232 to my downloaded processor? is there a special protocol or sth similar? 

 and for the Nios with the UART, should I download it or what?  thanks again

[Altera_Forum]

i'm not sure how your DSP is expecting instructions, but you could use a Nios to receive ASCII of the instruction, translate that into an opcode vector or whatever you need to do, and use a parallel I/O (PIO) from the Nios to send that instruction as a parallel bus out to the DSP processor.