diff --git a/023.slideshow/Makefile b/023.slideshow/Makefile
index d6dd452..f6fab87 100644
--- a/023.slideshow/Makefile
+++ b/023.slideshow/Makefile
@@ -5,7 +5,8 @@ INTERLACE=1
 HAM_MODE=1
 
 USERSTACK_ADDRESS=7fffc # userstack used by bootblock
-BASE_ADDRESS=800	# if you change this you must also change link.script.x
+BASE_ADDRESS=4000	# if you change this you must also change link.script.x
+			# note: this must be high enough not to conflict with MFMbufE
 
 BOOTBLOCK_ASM=alpine_bootblock.s
 OBJS=out/init.o out/utils.o out/trackloader.o out/image.o out/module.o out/disk.o out/data.o
@@ -41,7 +42,7 @@ else
 FLAGS=--height=256
 endif
 
-#SYMBOL_INFO=-M
+SYMBOL_INFO=-M
 #LINK_COMMANDLINE=vlink -T link.script.x -brawbin1 $< $(OBJS) $(SYMBOL_INFO) -osec=out/main && cat out/main.load out/main.photo > out/main.bin
 LINK_COMMANDLINE=vlink -T link.script.x -brawbin1 $< $(OBJS) $(SYMBOL_INFO) -o out/main.bin
 
diff --git a/023.slideshow/alpine_bootblock.s b/023.slideshow/alpine_bootblock.s
index 21802c3..1953463 100644
--- a/023.slideshow/alpine_bootblock.s
+++ b/023.slideshow/alpine_bootblock.s
@@ -33,15 +33,20 @@ BootCode:	;gathers some data, turns off OS, copies itself to $100
 					;from floppy. No GetVBR needed.
     *--- Fastmem available? ---*
 
+	if 1
 	move.l	#$20004,d1		;fast+largest
+	else
+	move.l	#$20002,d1		;chip+largest
+	endif
 	jsr 	-216(a6)		;AvailMem()
 	move.l 	d0,d5
+
 	sub.l	#2048,d5		;leave room for stacks to grow
 	moveq 	#4,d1
 	jsr 	-198(a6)		;AllocMem()
 	and.l 	#-8,d0
 	move.l 	d0,a5			;Start Address
-
+	
     *--- OS off ---*			;you're nice'n all, but now you die.
 
 	lea 	$dff002,a6		;Loader uses this custom base addr
@@ -336,8 +341,7 @@ BootE:
 	cnop	0,1024
 
 ;MFMbuf is placed here after bootblock end, $3c0.w or so when copied.
-MFMbuf	equ	$E0000
-;; MFMbuf	equ	LoaderVars+(BootE-CopyStart)
+MFMbuf	equ	LoaderVars+(BootE-CopyStart)
 MFMbufE	equ 	MFMbuf+MFMlen	;lowest free address. $372e for a full bootblock.
 	
 mainStart:
diff --git a/023.slideshow/link.script.x b/023.slideshow/link.script.x
index f01860d..4933239 100644
--- a/023.slideshow/link.script.x
+++ b/023.slideshow/link.script.x
@@ -1,6 +1,6 @@
 MEMORY 
 {
-    disk: org = 0x800, len = 0xDB800
+    disk: org = 0x4000, len = 901120-0x4000
     ram: org = 0x00000, len = 0x80000
 }