X-Git-Url: http://cloudbase.mooo.com/gitweb/avrcpm.git/blobdiff_plain/6421790873fa5bdb8e1d525cac42764faf0f0af3..18938d0cc783a503ea04cdd0d804a87ebf178d33:/dsk_mgr.asm

diff --git a/dsk_mgr.asm b/dsk_mgr.asm
index 38901cd..e48052c 100644
--- a/dsk_mgr.asm
+++ b/dsk_mgr.asm
@@ -22,13 +22,16 @@
 ;
 
 
-; ------------------------- Defines for the disk management Structures
+;-------------------------- Defines for the disk management Structures
 
 ;----------------------------------------------- Start of Data Segment
 
 	.dseg
 
 
+; Partition table offsets:
+tmp_tbl:
+	.byte	PARTENTRY_SIZE*MAXDISKS
 
 ; ------------------------------- Start of Code Segment
 	.cseg
@@ -38,10 +41,10 @@
 ; ====================================================================
 ; Parameters
 ; --------------------------------------------------------------------
-; Registers  : none
-; Variables  : [w] temp		Status of Operation
-;							(0x80 - Operation Failure )
-;							(others - Operation Suceded)
+; 
+; Registers  : [w] temp	    Number of disk images (raw and fat16) found.
+;			    + 0x80 if sd card changes. (not used, doesn't work)
+; SREG	:	   Z 	    according to temp
 ; --------------------------------------------------------------------
 ; Description:
 ; This Function scans an SD-Cards Boot-Sector for valid Partitions.
@@ -147,14 +150,21 @@ mgr_ploop2:
 ;	Get Partitiontype
 	ldd		temp,z+PART_TYPE
 
-;   Test for FAT Partition
-	cpi		temp,PARTID_FAT16
+;   Test for FAT Partition Type 1
+	cpi	temp,PARTID1_FAT16
+	brne	mgr_nextp1
+	
+	rcall	fat_add_partition
+	rjmp	mgr_pend
+
+;   Test for FAT Partition Type 2
+mgr_nextp1:
+	cpi	temp,PARTID2_FAT16
 	brne	mgr_nextp2
 	
-	rcall	 fat_add_partition
+	rcall	fat_add_partition
+	rjmp	mgr_pend	
 
-	rjmp	mgr_pend
-		
 mgr_nextp2:
 	adiw	zl,16
 	cpi		zl,low(hostbuf+510)
@@ -164,8 +174,15 @@ mgr_nextp2:
 
 mgr_pend:
 
+#if 0		/* ToDo: ramdisks are not in sd-card partitions */
 ; Initialize RAM-Disks
 	rcall 	rdsk_add_partition
+#endif
+
+;	Save ammount of found CP/M Partitions
+	sts	ndisks,temp3
+	tst	temp3
+	breq	mgr_fat
 
 ;Store new partitions and check if the SD card has been changed.
 
@@ -175,32 +192,37 @@ mgr_pend:
 	clt
 
 mgr_pcpl:
-	ld		temp,y+
-	ld		temp2,z
-	st		z+,temp
+	ld	temp,y+
+	ld	temp2,z
+	st	z+,temp
 	cpse	temp,temp2
 	set
-	dec		temp4
+	dec	temp4
 	brne	mgr_pcpl
 
-	mov		temp,temp3
-	sts		ndisks,temp
+	mov	temp,temp3
+	sts	ndisks,temp
+
 	brtc	mgr_pcpe
 
-	tst		temp
-	breq	mgr_pcpe
+; 	SD card changed.
 
-; 	SD card not changed.
+	tst	temp
+	breq	mgr_pcpe
 
+mgr_fat:
 #if FAT16_SUPPORT
 	rcall fat_scan_partition
-	rcall fat_reset_cache
+	rcall fat_reset_cache
 #endif
+
 	lds		temp,ndisks
 	sbr		temp,0x80
 
 mgr_pcpe:
 
+
+	tst	temp
 	ret
 
 
@@ -221,19 +243,19 @@ mgr_prnt_parttbl:
 	lds		yl,ndisks
 	ldi		xh,'A'
 
-pprl:
-	ldd		temp ,z+1		;Get partition start
-	ldd		temp2,z+2
-	ldd		temp3,z+3
-	ldd		temp4,z+4
+pprl:
+	ldd		temp ,z+1		;Get partition start
+	ldd		temp2,z+2
+	ldd		temp3,z+3
+	ldd		temp4,z+4
 
 	printnewline
 
-	cp		temp,_0			;If zero ...
-	cpc		temp2,_0
-	cpc		temp3,_0
-	cpc		temp4,_0
-	breq	mgr_prnop		;... no partition table at 0
+	cp		temp,_0			;If zero ...
+	cpc		temp2,_0
+	cpc		temp3,_0
+	cpc		temp4,_0
+	breq	mgr_prnop		;... no partition table at 0
 
 ; Partitiontype examining
 	ldd 	xl,z+0
@@ -268,7 +290,7 @@ mgr_prnop:
 	rcall	mgr_prnt_image
 
 mgr_prnt_size:
-	call	print_ultoa
+	call	print_ultoa
 	printstring ", size: "
 
 	ldd		temp ,z+5			;Get partition size
@@ -280,15 +302,15 @@ mgr_prnt_size:
 	ror		temp3
 	ror		temp2
 	ror		temp
-	call	print_ultoa
+	call	print_ultoa
 	printstring "KB."
 
 mgr_goto_next_part:	
 	adiw	z,PARTENTRY_SIZE
-	inc		xh
+	inc		xh
 	dec		yl
 	tst		yl
-	brne	pprl
+	brne	pprl
 
 mgr_pppre:
 	ret
@@ -310,9 +332,9 @@ mgr_prnt_fatsize:
 
 mgr_prnt_diskname:
 	push	temp
-	mov temp,xh
+	mov temp,xh
 	call uartputc
-	ldi temp,':'
+	ldi temp,':'
 	call uartputc
 	pop		temp
 	ret