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[/] [neorv32/] [trunk/] [rtl/] [core/] [neorv32_cpu.vhd] - Diff between revs 49 and 51

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Rev 49 Rev 51
Line 173... Line 173... 
  assert not (is_power_of_two_f(ipb_entries_c) = false) report "NEORV32 CPU CONFIG ERROR! Number of entries in instruction prefetch buffer <ipb_entries_c> has to be a power of two." severity error;
 
  assert not (is_power_of_two_f(ipb_entries_c) = false) report "NEORV32 CPU CONFIG ERROR! Number of entries in instruction prefetch buffer <ipb_entries_c> has to be a power of two." severity error;
 
  -- A extension - only lr.w and sc.w are supported yet --
 
  -- A extension - only lr.w and sc.w are supported yet --
 
  assert not (CPU_EXTENSION_RISCV_A = true) report "NEORV32 CPU CONFIG WARNING! Atomic operations extension (A) only supports <lr.w> and <sc.w> instructions." severity warning;
 
  assert not (CPU_EXTENSION_RISCV_A = true) report "NEORV32 CPU CONFIG WARNING! Atomic operations extension (A) only supports <lr.w> and <sc.w> instructions." severity warning;
 
 
 
 
 
  -- Bit manipulation notifier --
 
  -- Bit manipulation notifier --
 
  assert not (CPU_EXTENSION_RISCV_B = true) report "NEORV32 CPU CONFIG WARNING! Bit manipulation extension (B) only supports 'base' instruction sub-set (Zbb) yet and is still 'unofficial' (not-ratified)." severity warning;
 
  assert not (CPU_EXTENSION_RISCV_B = true) report "NEORV32 CPU CONFIG WARNING! Bit manipulation extension (B) is still highly experimental (not ratified yet)." severity warning;
 
 
 
 
 
  -- PMP regions check --
 
  -- PMP regions check --
 
  assert not (PMP_NUM_REGIONS > 64) report "NEORV32 CPU CONFIG ERROR! Number of PMP regions <PMP_NUM_REGIONS> out of valid range (0..64)." severity error;
 
  assert not (PMP_NUM_REGIONS > 64) report "NEORV32 CPU CONFIG ERROR! Number of PMP regions <PMP_NUM_REGIONS> out of valid range (0..64)." severity error;
 
  -- PMP granulartiy --
 
  -- PMP granulartiy --
 
  assert not ((is_power_of_two_f(PMP_MIN_GRANULARITY) = false) and (PMP_NUM_REGIONS > 0)) report "NEORV32 CPU CONFIG ERROR! PMP granulartiy has to be a power of two." severity error;
 
  assert not ((is_power_of_two_f(PMP_MIN_GRANULARITY) = false) and (PMP_NUM_REGIONS > 0)) report "NEORV32 CPU CONFIG ERROR! PMP granulartiy has to be a power of two." severity error;

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