* URCU_ARCH_HPPA : All HP PA-RISC variants
* URCU_ARCH_M68K : All Motorola 68000 variants
* URCU_ARCH_RISCV : All RISC-V variants
* URCU_ARCH_HPPA : All HP PA-RISC variants
* URCU_ARCH_M68K : All Motorola 68000 variants
* URCU_ARCH_RISCV : All RISC-V variants