diff --git a/SD_CARD/BaS_gcc/Makefile b/SD_CARD/BaS_gcc/Makefile
index 19a06b5..4e43392 100644
--- a/SD_CARD/BaS_gcc/Makefile
+++ b/SD_CARD/BaS_gcc/Makefile
@@ -60,7 +60,7 @@ CSRCS= \
 	$(SRCDIR)/bas_printf.c \
 	$(SRCDIR)/BaS.c \
 	$(SRCDIR)/cache.c \
-	$(SRCDIR)/mmcbb.c \
+	$(SRCDIR)/mmc.c \
 	$(SRCDIR)/unicode.c \
 	$(SRCDIR)/ff.c \
 	$(SRCDIR)/wait.c
@@ -69,7 +69,6 @@ ASRCS= \
 	$(SRCDIR)/startcf.S \
 	$(SRCDIR)/printf_helper.S \
 	$(SRCDIR)/mmu.S \
-	$(SRCDIR)/sd_card_asm.S \
 	$(SRCDIR)/exceptions.S \
 	$(SRCDIR)/supervisor.S \
 	$(SRCDIR)/ewf.S \
diff --git a/SD_CARD/BaS_gcc/bas.lk.in b/SD_CARD/BaS_gcc/bas.lk.in
index b91dc86..6364e61 100644
--- a/SD_CARD/BaS_gcc/bas.lk.in
+++ b/SD_CARD/BaS_gcc/bas.lk.in
@@ -13,7 +13,6 @@ SECTIONS
 		objs/sysinit.o(.text)
 		objs/init_fpga.o(.text)
 		objs/wait.o(.text)
-		objs/mmcbb.o(.text)
 		
 #if (FORMAT == elf32-m68k)
 		*(.rodata)
@@ -31,9 +30,9 @@ SECTIONS
 	{
 		objs/BaS.o(.text)
 		/* put other routines into the same segment (RAM) as BaS.o */ 
-		objs/ccsbcs.o(.text)
+		objs/unicode.o(.text)
+		objs/mmc.o(.text)
 		objs/ff.o(.text)
-		objs/sd_card_asm.o(.text)
 		objs/bas_printf.o(.text)
 		objs/printf_helper.o(.text)
 		objs/cache.o(.text)
diff --git a/SD_CARD/BaS_gcc/sources/sd_card_asm.S b/SD_CARD/BaS_gcc/sources/sd_card_asm.S
deleted file mode 100644
index fac7935..0000000
--- a/SD_CARD/BaS_gcc/sources/sd_card_asm.S
+++ /dev/null
@@ -1,439 +0,0 @@
-/********************************************************************/
-// sd card
-/********************************************************************/
-#define		dspi_dtar0	0x0c
-#define		dspi_dsr	0x2c
-#define		dspi_dtfr	0x34
-#define		dspi_drfr	0x38
-
-#define LONGASC(a, b, c, d) ((a << 24) | (b << 16) | (c << 8) | (d))
-
-#define MCF_PAD_PAR_DSPI	(__MBAR+0xA50)
-#define MCF_PSC0_PSCTB_8BIT (__MBAR+0x860C)
-#define MCF_DSPI_DMCR (__MBAR+0x8A00)
-#define MCF_SLT0_SCNT (__MBAR + 0x908)
-
-		.text
-
-warte_10ms:
-		move.l		d0,-(sp)
-		move.l		MCF_SLT0_SCNT,d0
-		sub.l		#1320000,d0
-warte_d6:
-		cmp.l		MCF_SLT0_SCNT,d0
-		bcs			warte_d6
-		move.l		(sp)+,d0
-		rts
-
-warte_1ms:
-		move.l		d0,-(sp)
-		move.l		MCF_SLT0_SCNT,d0
-		sub.l		#132000,d0
-warte_d5:
-		cmp.l		MCF_SLT0_SCNT,d0
-		bcs			warte_d5
-		move.l		(sp)+,d0
-		rts
-
-		.global		sd_idle
-		.global		sd_init
-
-sd_init:
-		lea			MCF_PSC0_PSCTB_8BIT,a6
-		move.l   	#LONGASC('S', 'D', '-', 'C'),(a6)
-		move.l		#LONGASC('a', 'r', 'd', ' '),(a6)
-
-		move.l		buffer,a5				// basis addresse (diesen bereich brauchen wir nicht mehr!)
-		move.l		#0x1fffffff,d0				// normal dspi
-		move.l		d0,MCF_PAD_PAR_DSPI
-		lea			MCF_DSPI_DMCR,a0
-		move.l		#0x800d3c00,(a0)			// 8 bit cs5 on
-		move.l		#0x38558897,d0				
-		move.l		d0,dspi_dtar0(a0)			// 400kHz 
-		move.l		#0x082000ff,d4				// tx vorbesetzen
-		mov3q.l		#-1,dspi_dsr(a0)
-		
-		bsr.l		warte_1ms
-		move.l		#0xc00d3c00,(a0)			// 8 bit 4MHz clocken cs off
-		bsr.l		warte_10ms
-		move.l		#0x800d3c00,(a0)			// 8 bit 4MHz normal cs on
-		bsr			sd_com
-		bsr			sd_com
-		bsr			sd_com
-		bsr			sd_com
-		bsr			sd_com
-		bsr			sd_com
-		bsr			sd_com
-		bsr			sd_com
-		bsr			sd_com
-		bsr			sd_com
-		move.l		#0x802d3c00,(a0)			// 8 bit 4MHz normal cs off
-		clr.b		d4
-		bsr			sd_com
-		bsr			sd_com
-		move.l		#0x800d3c00,(a0)			// 8 bit 4MHz normal cs on
-		move.b		#0xff,d4
-		bsr			sd_com
-		bsr			sd_com
-		move.l		#0x802d3c00,(a0)			// 8 bit 4MHz normal cs off
-		bsr.l		warte_10ms
-
-// sd idle
-		move.l		#100,d6				// 100 versuche
-		move.l		#10,d3				// 10 versuche
-sd_idle:
-		move.b		#0xff,d4			// receive byt
-		bsr			sd_com
-		move.b		#0x40,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#0x95,d4
-		bsr			sd_com
-		
-		move.b		#0xff,d4			// receive byt
-		bsr			sd_com
-		cmp.b		#0x01,d5
-		beq			idle_end
-		bsr			sd_com
-		cmp.b		#0x01,d5
-		beq			idle_end
-		bsr			sd_com
-		cmp.b		#0x01,d5
-		beq			idle_end
-		bsr			sd_com
-		cmp.b		#0x01,d5
-		beq			idle_end
-		bsr			sd_com
-		cmp.b		#0x01,d5
-		beq			idle_end
-		bsr			sd_com
-		cmp.b		#0x01,d5
-		beq			idle_end
-		subq.l		#1,d6
-		beq			sd_not
-		bra			sd_idle
-idle_end:
-// cdm 8
-read_ic:
-		move.b		#0xff,d4			// receive byt
-		bsr			sd_com
-		move.b		#0x48,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#0x01,d4
-		bsr			sd_com
-		move.b		#0xaa,d4
-		bsr			sd_com
-		move.b		#0x87,d4
-		bsr			sd_com
-		
-		bsr			sd_get_status
-		cmp.b		#5,d5
-		beq			sd_v1
-		cmp.b		#1,d5
-		bne			read_ic
-		
-		move.b		#0xff,d4
-		bsr			sd_com
-		move.b		d5,d0
-		bsr			sd_com
-		move.b		d5,d1
-		bsr			sd_com
-		move.b		d5,d2
-		bsr			sd_com
-		cmp.b		#0xaa,d5
-		bne			sd_testd3
-		move.l		#LONGASC('S', 'D', 'H', 'C'),(a6)
-		move.b		#' ',(a6)
-sd_v1:
-		
-// cdm 58
-read_ocr:
-		move.b		#0xff,d4			// receive byt
-		bsr			sd_com
-		move.b		#0x7a,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x01,d4
-		bsr			sd_com
-		
-		bsr			sd_get_status
-		move.l		#LONGASC('V', 'e', 'r', '1'),d6
-		cmp.b		#5,d5
-		beq			read_ocr
-		cmp.b		#1,d5
-		bne			read_ocr
-		
-		move.b		#0xff,d4
-		bsr			sd_com
-		move.b		d5,d0
-		bsr			sd_com
-		move.b		d5,d1
-		bsr			sd_com
-		move.b		d5,d2
-		bsr			sd_com
-
-// acdm 41
-		move.l		#20000,d6			// 20000 versuche ready can bis 1 sec gehen
-wait_of_aktiv:
-		move.b		#0xff,d4			// receive byt
-		bsr			sd_com
-		move.b		#0x77,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#0x95,d4
-		bsr			sd_com
-
-		bsr			sd_get_status
-		cmp.b		#0x05,d5
-		beq			wait_of_aktiv
-
-wait_of_aktiv2:
-		move.b		#0xff,d4			// receive byt
-		bsr			sd_com
-		move.b		#0x69,d4
-		bsr			sd_com
-		move.b		#0x40,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x95,d4
-		bsr			sd_com
-
-		bsr			sd_get_status
-		tst.b		d5
-		beq			sd_init_ok
-		cmp.b		#0x05,d5
-		beq			wait_of_aktiv2	
-		subq.l		#1,d6
-		bne			wait_of_aktiv
-sd_testd3:
-		subq.l		#1,d3
-		bne			sd_idle
-		bra			sd_error
-
-sd_init_ok:
-// cdm 10
-read_cid:
-		move.b		#0xff,d4			// receive byt
-		bsr			sd_com
-		move.b		#0x4a,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x95,d4
-		bsr			sd_com
-		
-		move.l		a5,a4				// adresse setzen
-		bsr			sd_rcv_info
-
-// name ausgeben
-		lea			1(a5),a4
-		moveq		#7,d7
-sd_nam_loop:
-		move.b		(a4)+,(a6)
-		subq.l		#1,d7
-		bne			sd_nam_loop
-		move.b		#' ',(a6)
-
-// cdm 9
-read_csd:
-		move.b		#0xff,d4			// receive byt
-		bsr			sd_com
-		move.b		#0x49,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#00,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x00,d4
-		bsr			sd_com
-		move.b		#0x01,d4
-		bsr			sd_com
-		
-		move.l		a5,a4				// adresse setzen
-		bsr			sd_rcv_info
-
-		mvz.b		(a5),d0
-		lsr.l		#6,d0
-		
-		bne			sd_csd2				// format v2
-		move.l		6(a5),d1
-		moveq		#14,d0				// bit 73..62 c_size
-		lsr.l		d0,d1				// bits extrahieren
-		and.l		#0xfff,d1			// 12 bits
-		addq.l		#1,d1
-		mvz.w		9(a5),d0
-		lsr.l		#7,d0				// bits 49..47
-		and.l		#0x7,d0				// 3 bits
-		moveq.l		#8,d2				// x256 (dif v1 v2)
-		sub.l		d0,d2		
-		lsr.l		d2,d1
-		bra			sd_print_size
-sd_csd2:
-		mvz.w		8(a5),d1
-		addq.l		#1,d1
-sd_print_size:		
-		swap		d1
-		lsl.l		#1,d1
-		bcc			sd_16G
-		move.l		#LONGASC('3', '2', 'G', 'B'),(a6)
-		bra			sd_ok
-sd_16G:
-		lsl.l		#1,d1
-		bcc			sd_8G
-		move.l		#LONGASC('1', '6', 'G', 'B'),(a6)
-		bra			sd_ok
-sd_8G:
-		lsl.l		#1,d1
-		bcc			sd_4G
-		move.l		#LONGASC(' ', '4', 'G', 'B'),(a6)
-		bra			sd_ok
-sd_4G:
-		lsl.l		#1,d1
-		bcc			sd_2G
-		move.l		#LONGASC(' ', '4', 'G', 'B'),(a6)
-		bra			sd_ok
-sd_2G:
-		lsl.l		#1,d1
-		bcc			sd_1G
-		move.l		#LONGASC(' ', '2', 'G', 'B'),(a6)
-		bra			sd_ok
-sd_1G:
-		lsl.l		#1,d1
-		bcc			sd_512M
-		move.l		#LONGASC(' ', '1', 'G', 'B'),(a6)
-		bra			sd_ok
-sd_512M:
-		lsl.l		#1,d1
-		bcc			sd_256M
-		move.b		#'5',(a6)
-		move.l		#LONGASC('1', '2', 'M', 'B'),(a6)
-		bra			sd_ok
-sd_256M:
-		lsl.l		#1,d1
-		bcc			sd_128M
-		move.b		#'2',(a6)
-		move.l		#LONGASC('5', '6', 'M', 'B'),(a6)
-		bra			sd_ok
-sd_128M:
-		lsl.l		#1,d1
-		bcc			sd_64M
-		move.b		#'1',(a6)
-		move.l		#LONGASC('2', '8', 'M', 'B'),(a6)
-		bra			sd_ok
-sd_64M:
-		lsl.l		#1,d1
-		bcc			sd_32M
-		move.l		#LONGASC('6', '4', 'M', 'B'),(a6)
-		bra			sd_ok
-sd_32M:
-		lsl.l		#1,d1
-		bcc			sd_16M
-		move.l		#LONGASC('3', '2', 'M', 'B'),(a6)
-		bra			sd_ok
-sd_16M:
-		lsl.l		#1,d1
-		bcc			sd_8M
-		move.l		#LONGASC('1', '6', 'M', 'B'),(a6)
-		bra			sd_ok
-sd_8M:
-		move.l		#LONGASC('<', '9', 'M', 'B'),(a6)
-sd_ok:
-		move.l		#LONGASC(' ', 'O', 'K', '!'),(a6)
-		move.l		#0x0a0d,(a6)
-		//halt
-		//halt
-		rts
-// subs ende -------------------------------
-sd_V1:
-		move.l   #LONGASC('n', 'o', 'n', '!'),(a6)
-		move.l	#0x0a0d,(a6)
-		//halt
-		//halt
-		rts
-sd_error:
-		move.l  #LONGASC('E', 'r', 'r', 'o'),(a0)
-		move.l	#LONGASC('r', '!', '', ''), (a0)
-		move.l	#0x0a0d,(a6)
-		halt
-		halt
-		rts
-sd_not:
-		move.l	#LONGASC('n', 'o', 'n', '!'),(a0)
-		move.l	#0x0a0d,(a6)
-		halt
-		halt
-		rts
-
-// status holen -------------------------------
-sd_get_status:
-		move.b		#0xff,d4
-		bsr			sd_com
-		cmp.b		#0xff,d5
-		beq			sd_get_status
-		rts
-// byt senden und holen ---------------------		
-sd_com:
-		move.l		d4,dspi_dtfr(a0)
-wait_auf_complett:
-		btst.b		#7,dspi_dsr(a0)
-		beq			wait_auf_complett
-		move.l		dspi_drfr(a0),d5
-		mov3q.l		#-1,dspi_dsr(a0)			// clr status register
-		rts
-
-// daten holen ----------------------------
-sd_rcv_info:		
-		moveq		#18,d3						// 16 byts + 2 byts crc
-		move.b		#0xff,d4
-sd_rcv_rb_w:		
-		bsr			sd_get_status 
-		cmp.b		#0xfe,d5					// daten bereit?
-		bne			sd_rcv_rb_w					// nein->
-sd_rcv_rd_rb:
-		bsr			sd_com
-		move.b		d5,(a4)+
-		subq.l		#1,d3
-		bne			sd_rcv_rd_rb
-		rts
-/******************************************/
-
-			.data
-buffer:		dc.l	0, 0, 0, 0, 0, 0, 0, 0