SYMBiFACE II:IDE routines - Revision history

Prodatron at 23:31, 12 November 2006

2006-11-12T23:31:39Z

← Older revision		Revision as of 23:31, 12 November 2006
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	;### IDE48B -> set 48bit address		;### IDE48B -> set 48bit address
	;### ~~Eingabe~~ IX[32-47],HL[16-31],DE[0-15]=Sectornumber, A=SDH, B=Number of Sectors		;### Input IX[32-47],HL[16-31],DE[0-15]=Sectornumber, A=SDH, B=Number of Sectors
			;### (you should reset the upper 8bits of the sector count register first)
	;### Output CF=0 -> ok		;### Output CF=0 -> ok
	;### CF=1 -> A=error code (...)		;### CF=1 -> A=error code (...)
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	dec c ;1		dec c ;1
	out (c),e ;4 LBA 00-07		out (c),e ;4 LBA 00-07
			dec c ;1
			pop de ;3
			out (c),d ;4 Sector count
	ld bc,ideprtsdh ;3		ld bc,ideprtsdh ;3
	~~pop de ;3~~
	out (c),e ;4 write SDH Register (high bytes)		out (c),e ;4 write SDH Register (high bytes)
	dec c ;1		dec c ;1
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	dec c ;1		dec c ;1
	out (c),h ;4 LBA 24-31		out (c),h ;4 LBA 24-31
	~~dec c ;1~~
	~~out (c),d ;4 Sector count~~
	ret ;3 -> 77 microseconds		ret ;3 -> 77 microseconds
	ide48b1 pop bc ;Return on Error		ide48b1 pop bc ;Return on Error

Prodatron at 00:35, 11 November 2006

2006-11-11T00:35:51Z

← Older revision		Revision as of 00:35, 11 November 2006
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	;### Destroyed AF,BC,DE		;### Destroyed AF,BC,DE
	ide48b push af ;4		ide48b push af ;4
	call iderdy ; wait for ready before SDH write		call iderdy ; wait for ready before first SDH write
	jr c,ide48b1 ;2		jr c,ide48b1 ;2
	pop af ;3		pop af ;3

Prodatron at 00:34, 11 November 2006

2006-11-11T00:34:19Z

← Older revision		Revision as of 00:34, 11 November 2006
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	jr c,ide48b1 ;2		jr c,ide48b1 ;2
	pop af ;3		pop af ;3
			or #0f ;2
	ld c,a ;1		ld c,a ;1
	push bc ;4		push bc ;4
	ld bc,ideprtsdh ;3		ld bc,ideprtsdh ;3
	or #0f ;2		and #f0 ;2
	~~dec a ;1~~
	out (c),a ;4 write SDH Register (low bytes)		out (c),a ;4 write SDH Register (low bytes)
	dec c ;1		dec c ;1
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	ld bc,ideprtsdh ;3		ld bc,ideprtsdh ;3
	pop de ;3		pop de ;3
	~~inc e ;1~~
	out (c),e ;4 write SDH Register (high bytes)		out (c),e ;4 write SDH Register (high bytes)
	dec c ;1		dec c ;1

Prodatron at 00:31, 11 November 2006

2006-11-11T00:31:40Z

← Older revision		Revision as of 00:31, 11 November 2006
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	dec a ;1		dec a ;1
	out (c),a ;4 write SDH Register (low bytes)		out (c),a ;4 write SDH Register (low bytes)
	~~call iderdy ; wait for ready after SDH write (maybe this can be skipped)~~
	~~jr c,ide48b1 ;2~~
	dec c ;1		dec c ;1
	out (c),l ;4 LBA 16-23		out (c),l ;4 LBA 16-23
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	pop de ;3		pop de ;3
	inc e ;1		inc e ;1
	out (c),a ;4 write SDH Register (high bytes)		out (c),e ;4 write SDH Register (high bytes)
	dec c ;1		dec c ;1
	db #dd:ld a,h ;2		db #dd:ld a,h ;2
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	dec c ;1		dec c ;1
	out (c),d ;4 Sector count		out (c),d ;4 Sector count
	ret ;3 -> 79 microseconds		ret ;3 -> 77 microseconds
	ide48b1 pop bc ;Return on Error		ide48b1 pop bc ;Return on Error
	ret		ret

145.254.112.66: added 48bit LBA routine (just for demonstration)

2006-11-10T17:12:21Z

added 48bit LBA routine (just for demonstration)

@@ Line 136: / Line 136: @@
          scf
          ret
 </pre>

Prodatron: added category

2006-08-28T00:09:58Z

added category

← Older revision		Revision as of 00:09, 28 August 2006
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	* [[Programming:SYMBiFACE_II\|SYMBiFACE II documentations]]		* [[Programming:SYMBiFACE_II\|SYMBiFACE II documentations]]

			[[Category:Programming]]

Prodatron at 13:29, 27 August 2006

2006-08-27T13:29:46Z

← Older revision		Revision as of 13:29, 27 August 2006
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	These are the core [[SYMBiFACE II]] IDE low level routines of [[SymbOS]]. They show how to read and write sectors from/to an IDE device.		These are the core [[SYMBiFACE II]] IDE low level routines of [[SymbOS]], written by [[Prodatron]]. They show how to read and write sectors from/to an IDE device.

	<pre>		<pre>
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	ret		ret
	</pre>		</pre>

			== See also ==

			* [[Programming:SYMBiFACE_II\|SYMBiFACE II documentations]]

Prodatron at 00:07, 26 August 2006

2006-08-26T00:07:17Z

← Older revision		Revision as of 00:07, 26 August 2006
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	;### IDEADR -> set address		;### IDEADR -> set address
	;### ~~Eingabe~~ HL=Track, E=Sector, D=SDH (head, drive, mode), B=number of sectors		;### Input HL=Track, E=Sector, D=SDH (head, drive, mode), B=number of sectors
	;### ~~Ausgabe~~ CF=0 -> ok		;### Output CF=0 -> ok
	;### CF=1 -> A=error code (...)		;### CF=1 -> A=error code (...)
	;### ~~Verändert~~ AF,BC		;### Destroyed AF,BC
	ideadr call ideadr0		ideadr call ideadr0
	ret c		ret c
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	;### IDECMD -> Send command		;### IDECMD -> Send command
	;### ~~Eingabe~~ A=Command		;### Input A=Command
	;### ~~Verändert~~ BC		;### Destroyed BC
	idecmd ld bc,ideprtsta		idecmd ld bc,ideprtsta
	out (c),a		out (c),a
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	;### IDERDY -> Wait, until IDE-drive is ready for command		;### IDERDY -> Wait, until IDE-drive is ready for command
	;### Output CF=0 -> ok, CF=1 -> error (A=code)		;### Output CF=0 -> ok, CF=1 -> error (A=code)
	;### ~~Verändert~~ AF		;### Destroyed AF
	iderdy push bc		iderdy push bc
	push hl		push hl
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	;### IDEDRQ -> wait for "Data Request"		;### IDEDRQ -> wait for "Data Request"
	;### Output BC=Portnumber of the Status Register		;### Output BC=Portnumber of the Status Register
	;### ~~Verändert~~ AF		;### Destroyed AF
	idedrq ld bc,ideprtsta		idedrq ld bc,ideprtsta
	idedrq1 in a,(c)		idedrq1 in a,(c)
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	;### IDERED -> read 512Bytes		;### IDERED -> read 512Bytes
	;### Input HL=destination address		;### Input HL=destination address
	;### Output HL=address behind destination		;### Output HL=address behind destination
	;### ~~Verändert~~ AF,BC		;### Destroyed AF,BC
	idered call idedrq		idered call idedrq
	ld bc,ideprtdat		ld bc,ideprtdat
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	;### IDEWRT -> write 512Bytes		;### IDEWRT -> write 512Bytes
	;### Input HL=source address		;### Input HL=source address
	;### Output HL=addresse behind source		;### Output HL=addresse behind source
	;### ~~Verändert~~ AF,BC		;### Destroyed AF,BC
	idewrt call idedrq ;wait for ready		idewrt call idedrq ;wait for ready
	ld bc,ideprtdat ;bc=IDE data port		ld bc,ideprtdat ;bc=IDE data port
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	;### IDEERR -> check error status		;### IDEERR -> check error status
	;### Output CF=0 -> ok (A=0 everthing is fine, A=1 data needed to be corrected),		;### Output CF=0 -> ok (A=0 everthing is fine, A=1 data needed to be corrected),
	;### CF=1 -> error (A=code, 6=error while read/write, 7=error while positioning, 8=abort, 9=unknown)		;### CF=1 -> error (A=code, 6=error while read/write, 7=error while positioning, 8=abort, 9=unknown)
	;### ~~Verändert~~ BC		;### Destroyed BC
	ideerr ld bc,ideprtsta		ideerr ld bc,ideprtsta
	in a,(c)		in a,(c)

Prodatron at 00:02, 26 August 2006

2006-08-26T00:02:26Z

New page

These are the core [[SYMBiFACE II]] IDE low level routines of [[SymbOS]]. They show how to read and write sectors from/to an IDE device.

<pre>
;==============================================================================
;### IDE-HARDDISC-ROUTINES ####################################################
;==============================================================================

ideprtsta equ #fd0f ;Portaddress + #f (Status/Command)
ideprtsdh equ #fd0e ;Portaddress + #e (SDH)
ideprtdat equ #fd08 ;Portaddress + #8 (Data)
ideprterr equ #fd09 ;Portaddress + #9 (Error)
ideprtdig equ #fd06 ;Portaddress + #6 (Digital-Output)

;### IDEADR -> set address
;### Eingabe HL=Track, E=Sector, D=SDH (head, drive, mode), B=number of sectors
;### Ausgabe CF=0 -> ok
;### CF=1 -> A=error code (...)
;### Verändert AF,BC
ideadr call ideadr0
ret c
dec c
out (c),h ;Track High
dec c
out (c),l ;Track Low
dec c
out (c),e ;Sector
dec c
out (c),a ;number of Sectors
ret
ideadr0 call iderdy
ret c
push bc
ld bc,ideprtsdh
out (c),d ;write SDH-Register
call iderdy
jr c,ideadr1
pop af ;A=number of sectors
or a
ret
ideadr1 pop bc
ret

;### IDECMD -> Send command
;### Eingabe A=Command
;### Verändert BC
idecmd ld bc,ideprtsta
out (c),a
ret

;### IDERDY -> Wait, until IDE-drive is ready for command
;### Output CF=0 -> ok, CF=1 -> error (A=code)
;### Verändert AF
iderdy push bc
push hl
ld bc,ideprtsta
ld hl,256*60
iderdy1 in a,(c)
and #80
jr z,iderdy2
dec l
jr nz,iderdy1
call subslp
dec h
jr nz,iderdy1
iderdy3 ld a,stoerrabo
scf
iderdy2 pop hl
pop bc
ret

;### IDEDRQ -> wait for "Data Request"
;### Output BC=Portnumber of the Status Register
;### Verändert AF
idedrq ld bc,ideprtsta
idedrq1 in a,(c)
and #08
jr z,idedrq1
ret

;### IDERED -> read 512Bytes
;### Input HL=destination address
;### Output HL=address behind destination
;### Verändert AF,BC
idered call idedrq
ld bc,ideprtdat
ld a,512/32
idered1 ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b
ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b
ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b
ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b:ini:inc b
dec a
jr nz,idered1
ret

;### IDEWRT -> write 512Bytes
;### Input HL=source address
;### Output HL=addresse behind source
;### Verändert AF,BC
idewrt call idedrq ;wait for ready
ld bc,ideprtdat ;bc=IDE data port
ld a,512/32
idewrt1 inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi
inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi
inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi
inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi:inc b:outi
dec a
jr nz,idewrt1
ret

;### IDEERR -> check error status
;### Output CF=0 -> ok (A=0 everthing is fine, A=1 data needed to be corrected),
;### CF=1 -> error (A=code, 6=error while read/write, 7=error while positioning, 8=abort, 9=unknown)
;### Verändert BC
ideerr ld bc,ideprtsta
in a,(c)
and 1+4
ret z ;CF=0, A=0 -> ok
cp 4
ld a,1 ;CF=0, A=1 -> ok, but with data correction
ret z
ld bc,ideprterr
in a,(c)
ld c,a
ld b,6
and 128+64 ;Sector unreadable/BadMarkedSector -> error while read/write
jr nz,ideerr1
ld a,c
inc b
and 2+16 ;Track0 not found/wrong SectorNum -> error while positioning
jr nz,ideerr1
inc b
bit 2,c ;Command Aborted -> abort
jr nz,ideerr1
inc b ;everything else -> unknown
ideerr1 ld a,b
scf
ret
</pre>