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diff --git a/spiflash/README b/spiflash/README new file mode 100644 index 0000000..753458b --- /dev/null +++ b/spiflash/README @@ -0,0 +1,18 @@ + +PicoRV32 SPI-Flash Demo +======================= + +This is a simple PicoRV32 example design that can run code directly from an SPI +flash chip. This example design uses the Lattice iCE40-HX8K Breakout Board. + +The flash is mapped to the memory region starting at 0x80000000. The reset +vector is set to 0x80100000, i.e. at the 1MB offset inside the flash memory. + +A small scratchpad memory (default 256 words, i.e. 1 kB) is mapped to address +0x00000000. A simple GPIO controller is mapped to address 0xC0000000. + +Run "make test" to run the test bench (and create testbench.vcd). + +Run "make prog" to build the configuration bit-stream and firmware images +and upload them to a connected iCE40-HX8K Breakout Board. + |