newStep.v

RTL/CONFIGS/icebreaker_config.v

@@ -0,0 +1,46 @@
+// Default femtosoc configuration file for IceStick
+
+`define NRV_NEGATIVE_RESET
+/************************* Devices **********************************************************************************/
+
+`define NRV_IO_LEDS      // Mapped IO, LEDs D1,D2,D3,D4 (D5 is used to display errors)
+`define NRV_IO_UART      // Mapped IO, virtual UART (USB)
+`define NRV_IO_SSD1351   // Mapped IO, 128x128x64K OLed screen
+`define NRV_IO_MAX7219   // Mapped IO, 8x8 led matrix
+`define NRV_MAPPED_SPI_FLASH // SPI flash mapped in address space. Can be used with MINIRV32 to run code from SPI flash.
+
+/************************* Processor configuration ******************************************************************/
+
+//`define NRV_FEMTORV32_QUARK_BICYCLE // RV32I 
+`define NRV_FEMTORV32_ELECTRON      // RV32IM
+//`define NRV_FEMTORV32_INTERMISSUM   // RV32IM  + IRQ
+//`define NRV_FEMTORV32_GRACILIS      // RV32IMC + IRQ
+//`define NRV_FEMTORV32_PETITBATEAU     // RV32IMFC + IRQ, does not fit on IceBreaker
+
+`define NRV_FREQ 20                 // Frequency in MHz. Recomm: 15 MHz   Overclocking: 20-25 MHz
+`define NRV_RESET_ADDR 32'h00820000 // Jump execution to SPI Flash (800000h, +128k(20000h) for FPGA bitstream)
+// tinyraytracer: 30 MHz RV32IM  electron 3:12
+//                20 MHz RV32IM  gracilis 3:44
+//                20 MHz RV32IMC gracilis 3:32
+//                25 MHz RV32IMC gracilis 2:49
+
+/************************* RAM (in bytes, needs to be a multiple of 4)***********************************************/
+
+// Using the 128 kbytes of single-ported RAM of the ice40-up5k
+// Note: cannot initialize it from .hex file, need to run from SPI Flash
+
+`define ICE40UP5K_SPRAM
+`define NRV_RAM 131072 
+
+// (other option, the 12 kbytes of BRAM, this one can be initialized from .hex file).
+//`define NRV_RAM 12288
+
+/************************* Advanced devices configuration *********************************************************/
+
+`define NRV_RUN_FROM_SPI_FLASH // Do not 'readmemh()' firmware from '.hex' file
+`define NRV_IO_HARDWARE_CONFIG // Comment-out to disable hardware config registers mapped in IO-Space
+                               // (only if you use your own firmware, libfemtorv32 depends on it)
+
+/******************************************************************************************************************/
+
+`define NRV_CONFIGURED