loading from D81 image works now on MEGA65

src/,,config_mega65.s

@@ -91,8 +91,8 @@
 ; --- Built-in DOS configuration
 
 ;; #CONFIG# UNIT_SDCARD                28
-;; #CONFIG# UNIT_FLOPPY                29        ; work in progress
-;; #CONFIG# UNIT_RAMDISK               0         ; do not change, DOS is not implemented yet
+;; #CONFIG# UNIT_FLOPPY                29
+;; #CONFIG# UNIT_RAMDISK               0         ; do not change, ram disk is not implemented yet
 
 
 ; --- Debug options

src/dos_m65/filesystem_cbm/fs_cbm_nextfileblock.s

@@ -29,13 +29,17 @@ fs_cbm_nextfileblock:
 
 @common_chk:
 
-	bne @common_load
+	bne fs_cbm_nextfileblock_common_load
+
+	; FALLTROUGH
+
+fs_cbm_nextfileblock_eof:
 
 	lda #$00                           ; end of file
 	sec
 	rts
 
-@common_load:
+fs_cbm_nextfileblock_common_load:
 
 	sta PAR_TRACK
 	stx PAR_SECTOR
@@ -87,10 +91,14 @@ fs_cbm_nextfileblock_got_ts:
 
 	; Less than a full sector is used
 
-	lda SHARED_BUF_1+$100+0
+	lda SHARED_BUF_1+$100+1
 
 @not_full_buf:
 
+	dec
+	cmp #$FF
+	beq fs_cbm_nextfileblock_eof
+
 	sta FD_ACPTR_LEN+0
 
 	; FALLTROUGH