Mikael Ågren 19ae709c81
fpga: Add syscall interrupt
Add syscall interrupt to be used for syscalls. The interrupt is
triggered by writing to an address in the 0xe1000000-0xe1ffffff

The PicoRV32 core is configured to use its minimal, non RISCV-standard,
interrupt implementation.
2025-02-27 14:20:28 +01:00
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