diff --git a/applecorn.s b/applecorn.s
index fe8ce05..3e625b9 100644
--- a/applecorn.s
+++ b/applecorn.s
@@ -40,22 +40,22 @@ A2IRQV      EQU   $3FE
 MLI         EQU   $BF00
 
 * IO Buffer for reading file (1024 bytes)
-IOBUF0      EQU   $4000       ; For loading ROM, OSFILE, *.
-IOBUF1      EQU   $4400       ; Four open files for langs
-IOBUF2      EQU   $4800
-IOBUF3      EQU   $4C00
-IOBUF4      EQU   $5000
+IOBUF0      EQU   $5000       ; For loading ROM, OSFILE, *.
+IOBUF1      EQU   $5400       ; Four open files for langs
+IOBUF2      EQU   $5800
+IOBUF3      EQU   $5C00
+IOBUF4      EQU   $6000
 
 * 512 byte buffer sufficient for one disk block
-BLKBUF      EQU   $5200
-BLKBUFEND   EQU   $5400
+BLKBUF      EQU   $6200
+BLKBUFEND   EQU   $6400
 
 * Address in aux memory where ROM will be loaded
 AUXADDR     EQU   $8000
 
 * Address in aux memory where the MOS shim is located
 AUXMOS1     EQU   $2000       ; Temp staging area in Aux
-EAUXMOS1    EQU   $4000       ; End of staging area
+EAUXMOS1    EQU   $5000       ; End of staging area
 AUXMOS      EQU   $D000       ; Final location in aux LC
 
 * Called by code running in main mem to invoke a