|  |  | 
|  | # Pinout for the iCE40-HX8K Breakout Board | 
|  |  | 
|  | set_io clk J3 | 
|  |  | 
|  | set_io flash_csb R12 | 
|  | set_io flash_clk R11 | 
|  | set_io flash_io0 P12 | 
|  | set_io flash_io1 P11 | 
|  |  | 
|  | # for QSPI mode the flash chip on the iCE40-HX8K Breakout Board | 
|  | # must be replaced with one that supports QSPI and the IO2 and IO3 | 
|  | # pins must be soldered to T9 and P8 (center on J3) | 
|  | #set_io flash_io2 T9 | 
|  | #set_io flash_io3 P8 | 
|  |  | 
|  | set_io ser_tx B12 | 
|  | set_io ser_rx B10 | 
|  |  | 
|  | # left on J3 | 
|  | #set_io debug_ser_tx T1 | 
|  | #set_io debug_ser_rx R3 | 
|  |  | 
|  | # right on J3 | 
|  | #set_io debug_flash_csb T15 | 
|  | #set_io debug_flash_clk R16 | 
|  | #set_io debug_flash_io0 N12 | 
|  | #set_io debug_flash_io1 P13 | 
|  | #set_io debug_flash_io2 T13 | 
|  | #set_io debug_flash_io3 T14 | 
|  |  | 
|  | set_io leds[7] B5  # D9 | 
|  | set_io leds[6] B4  # D8 | 
|  | set_io leds[5] A2  # D7 | 
|  | set_io leds[4] A1  # D6 | 
|  | set_io leds[3] C5  # D5 | 
|  | set_io leds[2] C4  # D4 | 
|  | set_io leds[1] B3  # D3 | 
|  | set_io leds[0] C3  # D2 | 
|  |  |