diff --git a/sw/boot.s b/sw/boot.s
index 67e7b15..8cb6a79 100644
--- a/sw/boot.s
+++ b/sw/boot.s
@@ -8,7 +8,7 @@
 .import   _main
 
 .export   __STARTUP__ : absolute = 1        ; Mark as startup
-.import   __RAM_START__, __RAM_SIZE__       ; Linker generated
+.import   __SDRAM_START__, __SDRAM_SIZE__       ; Linker generated
 
 .import    copydata, zerobss, initlib, donelib
 
@@ -29,9 +29,9 @@ _init:    LDX     #$FF                 ; Initialize stack pointer to $01FF
 ; ---------------------------------------------------------------------------
 ; Set cc65 argument stack pointer
 
-          LDA     #<(__RAM_START__ + __RAM_SIZE__)
+          LDA     #<(__SDRAM_START__ + __SDRAM_SIZE__)
           STA     sp
-          LDA     #>(__RAM_START__ + __RAM_SIZE__)
+          LDA     #>(__SDRAM_START__ + __SDRAM_SIZE__)
           STA     sp+1
 
 ; ---------------------------------------------------------------------------
diff --git a/sw/link.ld b/sw/link.ld
index 66eb486..0d2897b 100644
--- a/sw/link.ld
+++ b/sw/link.ld
@@ -2,15 +2,15 @@ MEMORY
 {
   ZP:  start = $0,    size = $100,  type = rw, define = yes;
   RAM: start = $0200, size = $3D00, type = rw, define = yes;
-  SDRAM: start = $4000, size = $3ff00, type = rw, define = yes;
+  SDRAM: start = $4000, size = $3ff0, type = rw, define = yes;
   ROM: start = $8000, size = $8000, fill = yes, fillval = $ff, file = %O;
 }
 
 SEGMENTS {
     ZEROPAGE: load = ZP,  type = zp,  define   = yes;
-    DATA:     load = ROM, type = rw,  define   = yes, run = RAM;
-    BSS:      load = RAM, type = bss, define   = yes;
-    HEAP:     load = RAM, type = bss, optional = yes;
+    DATA:     load = ROM, type = rw,  define   = yes, run = SDRAM;
+    BSS:      load = SDRAM, type = bss, define   = yes;
+    HEAP:     load = SDRAM, type = bss, optional = yes;
     STARTUP:  load = ROM, type = ro;
     ONCE:     load = ROM, type = ro,  optional = yes;
     CODE:     load = ROM, type = ro;