diff --git a/BaS_GNU/BaS_GNU/sources/startcf.c b/BaS_GNU/BaS_GNU/sources/startcf.c
index a04a5c1..be2e682 100644
--- a/BaS_GNU/BaS_GNU/sources/startcf.c
+++ b/BaS_GNU/BaS_GNU/sources/startcf.c
@@ -2,40 +2,52 @@
 
 void startup(void)
 {
-	__asm__ __volatile__ ("\n\t"
-	".extern	_initialize_hardware\n\t"
-	"bra.s	warmstart\n\t"
-	"jmp	___BOOT_FLASH + 8 | ist zugleich reset vector\n\t"
-	"| disable interrupts\n\t"
-"warmstart:\n\t"
-	"| disable interrupts\n\t"
-	"move.w #0x2700,sr\n\t"
-	: : : "memory");
+	asm volatile(
+		"		.extern	_initialize_hardware\n\t"
+		"		bra		warmstart\n\t"
+		"		jmp		___BOOT_FLASH + 8" 		/* that's also our reset vector */
+
+		/* disable interrupts */
+		"warmstart:\n\t"
+		"		move.w #0x2700,sr\n\t"
+		/* output */ :
+		/* input */ :
+		/* clobber */ : "d0");
 
 	/* Initialize MBAR */
-	__asm__ __volatile__ ("MOVE.L	#__MBAR,D0\n\t" : : : "memory");
-	__asm__ __volatile__ ("MOVEC	D0,MBAR\n\t" : : : "memory");
-	__asm__ __volatile__ ("MOVE.L	D0,_rt_mbar\n\t" : : : "memory");
+	asm volatile(
+		"		MOVE.L	#__MBAR,D0\n\t"
+		"		MOVEC	D0,MBAR\n\t"
+		"		MOVE.L	D0,_rt_mbar\n\t"
+		/* output */ :
+		/* input */ :
+		/* clobber */ : "d0");
 
 	/* mmu off */
-	__asm__ __volatile__ ("move.l	#__MMUBAR+1,d0\n\t" : : : "memory");
-	__asm__ __volatile__ ("movec	d0,MMUBAR" : : : "memory");	/* set mmubar */
+	asm volatile(
+		"		move.l	#__MMUBAR+1,d0\n\t"
+		"		movec	d0,MMUBAR\n\t"
+		/* output */ :
+		/* input */ :
+		/* clobber */ : "d0");
 
 	MCF_MMU_MMUCR = 0L;	/* MMU off */
 
-	__asm__ __volatile__ (
-    "|/* Initialize RAMBARs: locate SRAM and validate it */\n\t"
-   	"move.l	#__RAMBAR0 + 0x7,d0\n\t | supervisor only"
-   	"movec  d0,RAMBAR0\n\t"
-   	"move.l #__RAMBAR1 + 0x1,d0\n\t"""
-   	"movec  d0,RAMBAR1\n\t"
-	"| STACKPOINTER AUF ENDE SRAM1\n\t"
-	"lea 	__SUP_SP,a7\n\t"
-	"| instruction cache on\n\t"
-	"move.l	#0x000C8100,d0\n\t"
- 	"movec	d0,cacr\n\t"
- 	"nop\n\t"
-	"| initialize any hardware specific issues\n\t"
-	"bra    _initialize_hardware\n\t"
-	: : : "memory");
+	asm volatile(
+		/* Initialize RAMBARs: locate SRAM and validate it */
+		"		move.l	#__RAMBAR0 + 0x7,d0\n\t | supervisor only"
+		"		movec	d0,RAMBAR0\n\t"
+		"		move.l	#__RAMBAR1 + 0x1,d0\n\t"""
+		"		movec	d0,RAMBAR1\n\t"
+		/* set stack pointer to end of SRAM1 */
+		"		lea 	__SUP_SP,a7\n\t"
+		/* instruction cache on */
+		"		move.l	#0x000C8100,d0\n\t"
+		"		movec	d0,cacr\n\t"
+		"		nop\n\t"
+		/* initialize any hardware specific issues */
+		"		bra    _initialize_hardware\n\t"
+		/* output */ :
+		/* input */ :
+		/* clobber */ : "d0");
 }