title: "SetMemoryConfig" description: TRSE built-in method (from IDE help)

`SetMemoryConfig`

Systems: C128
Parameters: n,n,n,n,n

C64

On the C64, this method configures the current memory setup.

Parameter 1: Enables/disables IO
Parameter 2: Enables/disables Kernal
Parameter 3: Enables/disables BASIC

For instance, if you wish to disable Kernal and basic but keep IO, use SetMemoryConfig(1,0,0); Valid combinations are:

SetMemoryConfig(1,1,1);  //   IO area visible at $D000-$DFFF, BASIC ROM visible at $A000-$BFFF and KERNAL ROM visible at $E000-$FFFF. This is the default memory configuration on the C64.

SetMemoryConfig(1,1,0);  //   IO area visible at $D000-$DFFF, RAM visible at $A000-$BFFF (NO BASIC) and KERNAL ROM visible at $E000-$FFFF

SetMemoryConfig(1,0,0);   //  IO area visible at $D000-$DFFF, RAM visible at $A000-$BFFF (NO BASIC) and RAM visible at $E000-$FFFF (NO KERNAL). This is the typical memory configuration for demo/game development.

SetMemoryConfig(0,0,0); // RAM visible in all three areas: $A000-$BFFF, $D000-$DFFF and $E000-$FFFF

C128

On the C128, this method takes in 5 numerical parameters and changes the C128 MMU ( Memory Management Unit, address $FF00) to enable/disable various parts of the memory to be visible memory or ROM. The parameters are:

Parameter 1: $D000-$DFFF IO (0) or RAM (1)
Parameter 2: $4000-$7FFF System ROM (0) or RAM (1)
Parameter 3: $8000-$BFFF System ROM (0) or RAM (1)
Parameter 4: $C000-$FFFF System ROM (0) or RAM (1)
Parameter 5: Ram bank 0 (0) or bank 1 (1)

For instance: Make all ram except IO visible, and use the "other" memory bank:


SetMemoryConfig(0,1,1,1,1);