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Simulating Full SRAM of µC (#9)

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DarkressX
2023-05-24 20:51:43 +02:00
committed by GitHub
parent 5e08c6d728
commit 5c4aee2da6
1 changed files with 26 additions and 13 deletions
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33
registers/Memory.java
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@@ -12,6 +12,12 @@ public class Memory
public static int getRegister(int address)
{
if(address + 128 > 255) //Guard statement to check for early errors in command decoder or implementation
{
System.err.println("Guard statement triggered. The address must be 7Bit long and can therefore not exceed" +
" 127");
System.exit(1);
}
if(address == 0x0)
{
int indirectAddress = getFSR();
@@ -19,9 +25,9 @@ public class Memory
}
if(getRegisterBank() != 0)
{
if((Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address)))
if((Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address))) //Check if register ist mapped
{
return memory[address + 128]; //Write to correct memory address
return memory[address + 128]; //Ensure data is read from bank 1
}
}
return memory[address];
@@ -29,39 +35,46 @@ public class Memory
public static void setRegister(int address, int data)
{
if(address + 128 > 255) //Guard statement to check for early errors in command decoder or implementation
{
System.err.println("Guard statement triggered. The address must be 7Bit long and can therefore not exceed" +
" 127");
System.exit(1);
}
if(address == 0x0)
{
int indirectAddress = getFSR();
setDataFromIndirectAddress(indirectAddress, data);
return;
}
if(getRegisterBank() != 0)
if((Arrays.stream(bank0UniqueSpecialRegister).anyMatch(x -> x == address)) && getRegisterBank() == 0)
{
if((Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address)))
{
memory[address + 128] = data; //Write to correct memory address
memory[address] = data;
return;
}
if((Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address)) && getRegisterBank() == 1)
{
memory[address + 128] = data;
return;
}
memory[address] = data;
memory[address + 128] = data; //Ensure data is written to both banks to simulate mapping
}
private static int getDataFromIndirectAddress(int address)
{
if((Arrays.stream(bank0UniqueSpecialRegister).anyMatch(x -> x == address)) || (Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address)))
{
return memory[address];
}
return memory[address % 128]; // else: Registers.Registers which are mapped
}
private static void setDataFromIndirectAddress(int address, int data)
{
if((Arrays.stream(bank0UniqueSpecialRegister).anyMatch(x -> x == address)) || (Arrays.stream(bank1UniqueSpecialRegister).anyMatch(x -> x == address)))
{
memory[address] = data;
return;
}
memory[address % 128] = data; // else: Registers.Registers which are mapped
memory[address % 128 + 128] = data; //Ensure data is written to both banks to simulate mapping
}
private static int getRegisterBank()