I have some source codes that should be able to read a mouse through the PS/2 port on the Xilinx fpga board; it sends $F4 to the mouse and then wait for data from the mouse. However, I probed the ps/2 port of the mouse and found that the mouse is not sending signals (clk & data), both signals constantly stay at around 4V (Vcc = 5V). (I attach the mouse to the PC & probe the same port, and there are signals responding.) What would be the possiblities of such failure?
- posted
18 years ago