diff options
Diffstat (limited to 'src/synth/synth-ieee-std_logic_1164.adb')
| -rw-r--r-- | src/synth/synth-ieee-std_logic_1164.adb | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/synth/synth-ieee-std_logic_1164.adb b/src/synth/synth-ieee-std_logic_1164.adb index 6aaaa7cdc..b4d103b5b 100644 --- a/src/synth/synth-ieee-std_logic_1164.adb +++ b/src/synth/synth-ieee-std_logic_1164.adb @@ -19,6 +19,16 @@ -- MA 02110-1301, USA. package body Synth.Ieee.Std_Logic_1164 is + function Read_Bit (M : Memory_Ptr; Off : Uns32) return Bit is + begin + return Bit'Val (Read_U8 (M + Size_Type (Off))); + end Read_Bit; + + procedure Write_Bit (M : Memory_Ptr; Off : Uns32; Val : Bit) is + begin + Write_U8 (M + Size_Type (Off), Bit'Pos (Val)); + end Write_Bit; + function Read_Std_Logic (M : Memory_Ptr; Off : Uns32) return Std_Ulogic is begin return Std_Ulogic'Val (Read_U8 (M + Size_Type (Off))); @@ -29,6 +39,15 @@ package body Synth.Ieee.Std_Logic_1164 is Write_U8 (M + Size_Type (Off), Std_Ulogic'Pos (Val)); end Write_Std_Logic; + function To_Bit (S : Std_Ulogic; Xmap : Bit) return Bit is + begin + case S is + when '0' | 'L' => return '0'; + when '1' | 'H' => return '1'; + when others => return Xmap; + end case; + end To_Bit; + function Read_Bit_To_Std_Logic (M : Memory_Ptr; Off : Uns32) return Std_Ulogic is begin |