diff --git a/src/ff.c b/src/ff.c
index 2d7862a..bcd68c1 100644
--- a/src/ff.c
+++ b/src/ff.c
@@ -2198,7 +2198,6 @@ FRESULT f_read (
 #if !_FS_TINY
 #if !_FS_READONLY
 			if (fp->flag & FA__DIRTY) {				/* Write sector I/O buffer if needed */
-printf("DIRTY!?!\n");
 				if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
 					ABORT(fp->fs, FR_DISK_ERR);
 				fp->flag &= ~FA__DIRTY;
@@ -2222,7 +2221,6 @@ printf("DIRTY!?!\n");
 			mem_cpy(rbuff, &fp->fs->win[fp->fptr % SS(fp->fs)], rcnt);	/* Pick partial sector */
 #else
 			mem_cpy(rbuff, &fp->buf[fp->fptr % SS(fp->fs)], rcnt);	/* Pick partial sector */
-			printf("final mem_cpy, rcnt=%d, rbuff-buff=%d\n", rcnt, (void*)rbuff-buff);
 		} else {
 			sd_offload_partial_start = fp->fptr % SS(fp->fs);
 			sd_offload_partial_end = sd_offload_partial_start + rcnt;
@@ -2376,7 +2374,6 @@ FRESULT f_sync (
 	res = validate(fp->fs, fp->id);		/* Check validity of the object */
 	if (res == FR_OK) {
 		if (fp->flag & FA__WRITTEN) {	/* Has the file been written? */
-printf("DIRTY?!?!?!\n");
 #if !_FS_TINY	/* Write-back dirty buffer */
 			if (fp->flag & FA__DIRTY) {
 				if (disk_write(fp->fs->drv, fp->buf, fp->dsect, 1) != RES_OK)
diff --git a/src/fpga_spi.c b/src/fpga_spi.c
index ed315ad..ebdf7c5 100644
--- a/src/fpga_spi.c
+++ b/src/fpga_spi.c
@@ -133,6 +133,7 @@
 #include "spi.h"
 #include "fpga_spi.h"
 #include "timer.h"
+#include "sdnative.h"
 
 void fpga_spi_init(void) {
   spi_init(SPI_SPEED_FAST);
@@ -230,10 +231,12 @@ void fpga_sddma(uint8_t tgt, uint8_t partial) {
   FPGA_SELECT();
   FPGA_TX_BYTE(0xF1); /* STATUS */
   FPGA_TX_BYTE(0x00); /* dummy */
+  DBG_SD printf("FPGA DMA request sent, wait for completion...");
   while((status=FPGA_RX_BYTE()) & 0x80) {
     FPGA_RX_BYTE(); /* eat the 2nd status byte */
     test++;
   }
+  DBG_SD printf("...complete\n");
   FPGA_DESELECT();
   if(test<5)printf("loopy: %ld %02x\n", test, status);
   BITBAND(SD_CLKREG->FIODIR, SD_CLKPIN) = 1;
diff --git a/src/sdnative.c b/src/sdnative.c
index 76218b9..474ebdb 100644
--- a/src/sdnative.c
+++ b/src/sdnative.c
@@ -449,9 +449,11 @@ int send_command_fast(uint8_t* cmd, uint8_t* rsp, uint8_t* buf){
       j=datcnt;
       datshift=8;
       DBG_SD printf("response over, waiting for data...\n");
+      /* wait for data start bit on DAT0 */
       while((BITBAND(SD_DAT0REG->FIOPIN, SD_DAT0PIN)) && --timeout) {
         wiggle_fast_neg1();
       }
+      DBG_SD if(!timeout) printf("timed out!\n");
       wiggle_fast_neg1(); /* eat the start bit */
       if(sd_offload) {
         if(sd_offload_partial) {
@@ -588,9 +590,12 @@ int stream_datablock(uint8_t *buf) {
   uint8_t datdata=0;
   uint32_t timeout=1000000;
 
+  DBG_SD printf("stream_datablock: wait for ready...\n");
   while((BITBAND(SD_DAT0REG->FIOPIN, SD_DAT0PIN)) && --timeout) {
     wiggle_fast_neg1();
   }
+  DBG_SD if(!timeout) printf("timeout!\n");
+
   wiggle_fast_neg1(); /* eat the start bit */
   if(sd_offload) {
     if(sd_offload_partial) {