Not so HotFix 2.

-bug: Убран баг в загрузчике и ядре с детектом FAT32/16 в некоторых случаях.
-bug: OPEN_FN - убран улёт в левый адрес со стека при попытке открыть больше файлов, чем положено
-bug: GetBPB in fdd-drv.asm - проверка MBR SIGNATURE после чтения BPB для исключения неправильной установки количества Sectors Per Track
-bug: GenIOCTL.GetParams - выдавала неправильное количество секторов для FDD
fdd-drv.asm: подредактирован под новый биос

BOOT/DSSBOOT.ASM

@@ -577,21 +577,28 @@ GET_BPB:	XOR	A
 		;LD	L,A
 		;LD	(FatBuffer.CacheBlock),HL
 		; A = 0
-		LD	DE,(FatBuffer.SectorsPerFAT_H)
+		LD	HL,(FatBuffer.SectorsPerFAT_H)
-		LD	D,A
+		LD	H,A
+		LD	D,H
+		LD	E,L
+		;EX	DE,HL
+		EXX
 		LD	HL,(FatBuffer.SectorsPerFAT_L)
-		; DE:HL = SectorsPerFAT
+		LD	D,H
-		;
+		LD	E,L
+		; HL':HL = SectorsPerFAT
+		; DE':DE = SectorsPerFAT
 		LD	A,(BOOT_BUFFER + BOOT_SECTOR.Number_of_FATs)
-		LD	B,A
 		DEC	A
-		JR	Z,.loop_mul_end
+		LD	B,A
+		;
+		CALL	NZ,ALL_SECTORS_PER_FATs
+		EXX	
+		 PUSH	HL
+		EXX	
+		POP	DE
+		; DE:HL - sectors per FATs
 		; .Number_of_FATs * .SectorsPerFAT
-.loop_mul:	ADD	HL,HL
-		EX	DE,HL
-		ADC	HL,HL
-		EX	DE,HL
-		DJNZ	.loop_mul
 .loop_mul_end:	; .DirSizeInSectors + .Number_of_FATs * .SectorsPerFAT
 		LD	B,0
 		LD	A,(FatBuffer.DirSizeInSectors)
@@ -669,15 +676,9 @@ GET_BPB:	XOR	A
 		 LD	HL,(FatBuffer.FAT1_SEC_L)
 		 LD	DE,(FatBuffer.SectorsPerFAT_L)
 		 AND	#0F
-		 JR	Z,.first_FAT_active
 		 LD	B,A
-		;
+		 CALL	NZ,ALL_SECTORS_PER_FATs
-.fat_calc_loop:	 ADD	HL,DE
+		 ;
-		EXX
-		ADC	HL,DE
-		EXX
-		 DJNZ	.fat_calc_loop
-		;
 .first_FAT_active:
 		 LD	(FatBuffer.FAT1_SEC_L),HL
 		EXX
@@ -700,6 +701,18 @@ GET_BPB:	XOR	A
 		;
 
 
+; HL:HL' - first FAT sector
+; DE:DE' - sectors per one FAT
+;      A - number of FATs (counts from 0)
+ALL_SECTORS_PER_FATs:
+		ADD	HL,DE
+		EXX
+		 ADC	HL,DE
+		EXX
+		DJNZ	ALL_SECTORS_PER_FATs
+		RET
+;
+
 ;NSECTOR:
 ; in:	HL':HL - CLUSTER
 ; out:	HL:IX  - SECTOR

BOOT/boot.asm

@@ -89,14 +89,14 @@
 	BYTE	'    Anatoliy    '
 	BYTE	'   Belyanskiy.  '
 	BYTE	' Sprinter Team, '
-	BYTE	'      2025      '
+	BYTE	'      2026      '
  ENDIF
  ENDM
 
 
 ; ¢¥àá¨ï ¯à®£à ¬¬ë
 major_version		equ	3			; áâ. ­®¬¥à ¢¥àᨨ
-minor_version		equ	0			; ¬«. ­®¬¥à
+minor_version		equ	1			; ¬«. ­®¬¥à
 ;;
 SECTORS_OF_LOADER	EQU	4			; ᥪâ®à®¢ § £àã§ç¨ª 
 .IN_BPB			EQU	1

DSS/API/Open.asm

@@ -32,11 +32,12 @@ OPEN_FN:	;!TEST Current Dir ;[x] 15/10/23
 .FM:		 PUSH	DE	; á®å࠭塞 㪠§ â¥«ì ­  § ¯¨áì ¢ ª â «®£¥ FS (¯®«ã祭 ¨§ SEARCH)
 		;
 		CALL	GET_FM		; enter point from ATTRIB
+		POP	DE
 		RET	C
 		LD	A,C
 		EX	AF,AF'
 		;!TEST	9/11/23	record index 㪠§ â¥«ì ­  § ¯¨áì ¢ ª â «®£¥ FS
-		 POP	DE
+		 ;POP	DE
 		 ; EXX 
 		 LD	(IY+_sFM.HANDLE),E
 		 LD	(IY+_sFM.HANDLE+1),D

DSS/FS/FAT.asm

@@ -931,20 +931,23 @@ FAT_BPB:	LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.DRIVE_TYPE)
 		; A = 0
 		LD	HL,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_H)
 		LD	H,A
-		EX	DE,HL
+		LD	D,H
+		LD	E,L
+		EXX
 		LD	HL,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_L)
-		; DE:HL = SectorsPerFAT
+		LD	D,H
-		;
+		LD	E,L
+		; HL':HL = SectorsPerFAT
+		; DE':DE = SectorsPerFAT
 		LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.Number_of_FATs)
-		LD	B,A
 		DEC	A
-		JR	Z,.loop_mul_end
+		LD	B,A
-		; .Number_of_FATs * .SectorsPerFAT
+		CALL	NZ,ALL_SECTORS_PER_FATs
-.loop_mul:	ADD	HL,HL
+		EXX	
-		EX	DE,HL
+		 PUSH	HL
-		ADC	HL,HL
+		EXX	
-		EX	DE,HL
+		POP	DE
-		DJNZ	.loop_mul
+		; DE:HL - sectors per FATs
 .loop_mul_end:	; .DirSizeInSectors + .Number_of_FATs * .SectorsPerFAT
 		LD	B,0
 		LD	A,(CORE_BUFFERS.FS_Buffer.DirSizeInSectors)
@@ -1019,21 +1022,15 @@ FAT_BPB:	LD	A,(CORE_BUFFERS.SECTOR_BUFFER + BOOT_SECTOR.DRIVE_TYPE)
 		LD	DE,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_H)
 		LD	D,0
 		EXX
-		LD	HL,(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L)
+		 LD	HL,(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L)
-		LD	DE,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_L)
+		 LD	DE,(CORE_BUFFERS.FS_Buffer.SectorsPerFAT_L)
-		AND	#0F
+		 AND	#0F
-		JR	Z,.first_FAT_active
+		 LD	B,A
-		LD	B,A
+		 CALL	NZ,ALL_SECTORS_PER_FATs
-		;
+		 ;
-.fat_calc_loop:	ADD	HL,DE
-		EXX
-		 ADC	HL,DE
-		EXX
-		DJNZ	.fat_calc_loop
-		;
 .first_FAT_active:
-		LD	(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L),HL
+		 LD	(CORE_BUFFERS.FS_Buffer.FAT1_SEC_L),HL
-		LD	(CORE_BUFFERS.FS_Buffer.FAT2_SEC_L),HL
+		 LD	(CORE_BUFFERS.FS_Buffer.FAT2_SEC_L),HL
 		EXX
 		LD	(CORE_BUFFERS.FS_Buffer.FAT1_SEC_H),HL
 		LD	(CORE_BUFFERS.FS_Buffer.FAT2_SEC_H),HL
@@ -1172,6 +1169,19 @@ SectorToCluster:
 		JP	.loop	
 ;
 
+; HL:HL' - first FAT sector
+; DE:DE' - sectors per one FAT
+;      A - number of FATs (counts from 0)
+ALL_SECTORS_PER_FATs:
+		ADD	HL,DE
+		EXX
+		 ADC	HL,DE
+		EXX
+		DJNZ	ALL_SECTORS_PER_FATs
+		RET
+;
+
+
 ; DOS_X_Error:
 ; .UnknownBPB:	LD	A,DSS_Error.sys.UNKNOWN_FORMAT
 ; 		SCF

DSS/build.txt

@@ -1 +1 @@
-59
+62

DSS/drivers/media/fdd-drv.asm

@@ -178,11 +178,12 @@ Init:		LD	A,2     ;
 ;	;	;
 
 ;
-Open:		PUSH	AF
+Open:		PUSH	IY
+		PUSH	AF
 		LD	C,BIOS.DRV_RESET
 		RST	ToBIOS
 		POP	BC
-		RET	C
+		JR	C,.error
 		;
 		LD	A,B
 		LD	C,BIOS.DRV_GET_PAR
@@ -193,6 +194,7 @@ Open:		PUSH	AF
 		 OR	A				; 㡨ࠥ¬ ZF, ¥á«¨ ¥áâì
 		;
 		ADD	IX,DE				; ¥á«¨ à §¬¥à ᥪâ®à  ¡®«ìè¥, â® ®¡«®¬
+.error:		POP	IY
 		RET
 ;	;	;
 
@@ -216,7 +218,19 @@ MediaCheck:	CALL	Open
 
 
 ;DE - ADDRESS
-GetBPB:		LD	IX,0
+GetBPB:		PUSH	IY
+		CALL	.Start
+		POP	IY
+		RET
+		;		
+.Start:		LD	IX,0
+		; fix bug 14/01/2026. ¥á«¨ ­¥â MBR, â® ­¨ª ª¨å ¬ã⮪
+		 LD	H,D
+		 LD	L,E
+		 LD	BC,BOOT_SECTOR.MBR_SIGNATURE
+		 ADD	HL,BC
+		 LD	(HL),C
+		;
 		LD	HL,0
 		PUSH	DE
 		PUSH	AF
@@ -225,18 +239,30 @@ GetBPB:		LD	IX,0
 		POP	DE
 		POP	HL
 		RET	C
+		;
 		LD	BC,BOOT_SECTOR.SectorsPerTrack
 		ADD	HL,BC
 		LD	E,(HL)
-		PUSH	DE
+		; fix bug 14/01/2026. ¥á«¨ ­¥â MBR, â® ­¨ª ª¨å ¬ã⮪
+		 LD	BC,BOOT_SECTOR.MBR_SIGNATURE - BOOT_SECTOR.SectorsPerTrack
+		 ADD	HL,BC
+		 LD	C,(HL)
+		 INC	HL
+		 LD	B,(HL)
+		 LD	HL,#AA55
+		 SBC	HL,BC
+		 LD	A,DSS_Error.drv.UNKNOWN_FORMAT
+		 SCF
+		 RET	NZ
+		;
+		PUSH	DE						; D - drive, E - Sectors Per Track
 		LD	A,D
 		LD	C,BIOS.DRV_GET_PAR
 		RST	ToBIOS
-		LD	A,H
+		LD	C,H						; C heads
-		POP	HL
+		POP	HL						; H - drive, L - Sectors Per Track		
-		PUSH	HL
+		LD	A,H						; A - drive
-		LD	H,A
+		LD	H,C						; H - heads, L - Sectors Per Track
-		POP	AF
 		LD	C,BIOS.DRV_SET_PAR
 		RST	ToBIOS
 		XOR	A
@@ -250,14 +276,18 @@ GetBPB:		LD	IX,0
 ;	;	;
 
 
-Read:		LD	C,BIOS.DRV_READ
+Read:		PUSH	IY
+		LD	C,BIOS.DRV_READ
 		RST	ToBIOS
+		POP	IY
 		RET 
 ;	;	;
 
 
-Write:		LD	C,BIOS.DRV_WRITE
+Write:		PUSH	IY
+		LD	C,BIOS.DRV_WRITE
 		RST	ToBIOS
+		POP	IY
 		RET 
 ;	;	;
 
@@ -324,19 +354,23 @@ GenIOCTL:	BIT	7,B
 		RET
 		;
 .next:		PUSH	AF
+		PUSH	IY
 		LD	C,BIOS.DRV_GET_PAR
 		RST	ToBIOS
+		POP	IY
 		JR	C,.NONE_FDD
+		;
 		PUSH	HL
 		PUSH	DE
 		LD	A,H
-		LD	H,0
+		LD	C,L
-		;
+		LD	HL,0
-.mull_loop1:	ADD	HL,HL
+		LD	B,H
+.mull_loop1:	ADD	HL,BC
 		DEC	A
 		JR	NZ,.mull_loop1
 		;
-		; HL - SECTOR PER CYLLINDER
+		; HL - SECTORS PER CYLINDER
 		; A=0 ZF=0 CF=0
 		LD	B,H
 		LD	C,L
@@ -393,7 +427,12 @@ GenIOCTL:	BIT	7,B
 ;	D5	- "1" RESERVED
 ;	D6	- ADDRESSING MODE LBA/CHS
 ;	D7	- "1" RESERVED
-.SetParams:	PUSH	AF
+.SetParams:	PUSH	IY
+		CALL	.Start
+		POP	IY
+		RET
+		;
+.Start:		PUSH	AF
 		EXX 
 		EX	DE,HL
 		LD	H,L
@@ -410,7 +449,8 @@ GenIOCTL:	BIT	7,B
 		JR	C,.NONE_FDD
 		POP	AF
 		LD	C,BIOS.DRV_SET_PAR
-		JP	ToBIOS
+		RST	ToBIOS
+		RET
 ;	;	;
 
 

SHELL/version.inc

@@ -1,6 +1,16 @@
+	IFNDEF	INCREASE_BUILD
+	 	DEFINE INCREASE_BUILD 0
+	ELSE
+		DEFINE+ INCREASE_BUILD 1
+	ENDIF
 ;------------------[ „®áâ ñ¬ ⥪ãéãî ¤ âã ¨ BUILD++ ]-----------------[]
  LUA PASS1
-	Console_build = increase_build("./SHELL/build.txt")
+ 	if sj.get_define("INCREASE_BUILD") > "0" then
+		Console_build = increase_build("./SHELL/build.txt")
+	else
+		Console_build = get_build("./SHELL/build.txt")
+	end
+
 	if Console_build > 999 then
 		Console_build = 999
  		print("WARNING! Build > 999","WARNING! Build > 999","WARNING! Build > 999","WARNING! Build > 999","\aWARNING! Build > 999\a")

Shared_Includes

@@ -1 +1 @@
-Subproject commit a0e68ce3a19bd47537585e49bfbf5e45fab197a1
+Subproject commit 467265101452bce67322e4b77cc0878044859eaa