My naive experiments with RudoIV and picorv32
This is my playground with risc-v SOCs..
RudoIV - see Joerg's https://github.com/bobbl/rudolv
Picorv32 - see Claire's https://github.com/cliffordwolf/picorv32
24.03.2021 rudolv - includes essential files only.. MODs for
- enabling full 128kB of SPRAM in UPduinos (ice40UP5k fpgas)
- new bootloader which boots from FLASH instead of UART
- a test C 125kB large - it tests the full 128kB capabilities
The bootloader does bitbanged SPI via CSRs
- added reading of fpga pins in csr.v
- modded up5k.pcf with UPduino externa 4MB flash wiring
Included myrudo.c 125kB large C test for testing full 128kB of SPRAM
Included myrudo.bin to be flashed into the flash from 0x10_0000 (1MB)