GBDK (lcc version) Save RAM Demo:



   /* test saveram - save.c */



   #include <stdio.h>

   #include <gb.h>



   UBYTE *RAMPtr;



   int main()

      {

      ENABLE_RAM_MBC1;



      RAMPtr = (UBYTE *)0xa000;

      printf("Hex number -> 0x%x", RAMPtr[0]);

      RAMPtr[0]++;



      DISABLE_RAM_MBC1;

      return(0);

      }



   =====================

   Everytime the program runs a different hex number is displayed.

   compiled as follows:



   lcc -Wl-yt2 -Wl-yo4 -Wl-ya4 -o save.gb save.c



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RGBASM Save RAM Demo:



   ; Write B to Cart RAM location HL

   ; (HL needs to be in range $a000-$bfff.)



   WriteToCartRAM:

      ld   a,$0a

      ld   [0],a    ; Enable Cart Save RAM



      ld   [hl],b



      xor  a

      ld   [0],a    ; Disable Cart Save RAM to prevent

                    ; false writes during powerdown

      ret



   ; Read Cart RAM location HL into B

   ; (HL needs to be in range $a000-$bfff.)



   ReadFromCartRAM:

      ld   a,$0a

      ld   [0],a    ; Enable Cart Save RAM



      ld   b,[hl]



      xor  a

      ld   [0],a    ; Disable Cart Save RAM to prevent

                    ; false writes during powerdown

      ret