diff options
Diffstat (limited to 'MicSim/components/microprogram.py')
| -rw-r--r-- | MicSim/components/microprogram.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/MicSim/components/microprogram.py b/MicSim/components/microprogram.py index ec84886..c2a3552 100644 --- a/MicSim/components/microprogram.py +++ b/MicSim/components/microprogram.py @@ -32,7 +32,9 @@ class Microprogram: """ Read data into memory """ + self.c["MAR"]=self.c["MAR"]*4 # Don't forget MAR address 32bits block of memory little_endian=self.c["RAM"].read() + self.c["MAR"]=self.c["MAR"]/4 # Restore MAR ##### Build little endian version of MDR #### big_endian=(little_endian&0xFF)<<24 big_endian=big_endian|(((little_endian>>8)&0xFF)<<16) @@ -53,7 +55,9 @@ class Microprogram: ############################################## big_endian=self.c["MDR"] # Backup MDR before change it to little endian self.c["MDR"]=little_endian # Load little endian value + self.c["MAR"]=self.c["MAR"]*4 # Don't forget MAR address 32bits block of memory self.c["RAM"].write() # Write little endian value into memory + self.c["MAR"]=self.c["MAR"]/4 # Restore MAR self.c["MDR"]=big_endian # Restore big endian def exec(self): # TODO: Implement opcode |