; You should have received a copy of the GNU General Public License
; along with this program. If not, see <http://www.gnu.org/licenses/>.
-
; used variables : BufferPtr, BufferLen
;-----------------------------------------------------------------------
; SD card OPEN, LOAD subroutines
;-----------------------------------------------------------------------
+; ==================================;
+ReadFAT1SectorW ;SWX (< 65536)
+; ==================================;
+ ADD &OrgFAT1,W ;
+ MOV #0,X ; FAT1_SectorHI = 0
+ JMP ReadSectorWX ;SWX read FAT1SectorW, W = 0
+; ----------------------------------;
+
+ .IFDEF SD_CARD_READ_WRITE
+
+; this subroutine is called by Write_File (bufferPtr=512) and CloseHandle (0 =< BufferPtr =< 512)
+; ==================================;
+WriteSD_Buf ;SWX input: T = CurrentHDL
+; ==================================;
+ ADD &BufferPtr,HDLL_CurSize(T) ; update handle CurrentSizeL
+ ADDC #0,HDLH_CurSize(T) ;
+; ==================================;
+WriteSectorHL ;SWX
+; ==================================;
+ MOV &SectorL,W ; Low
+ MOV &SectorH,X ; High
+ JMP WriteSectorWX ; ...then RET
+; ----------------------------------;
+
+ .ENDIF
+
; rules for registers use
; S = error
; T = CurrentHdl, pathname
; W = SectorL, (RTC) TIME
; X = SectorH, (RTC) DATE
-; Y = BufferPtr, (DIR) EntryOfst, FAToffset
+; Y = BufferPtr, (DIR) DIREntryOfst
-
-; ----------------------------------;
-HDLCurClusToFAT1sectWofstY ;WXY Input: T=currentHandle, Output: W=FATsector, Y=FAToffset, Cluster=HDL_CurCluster
-; ----------------------------------;
+; ==================================;
+HDLcurClus2FATsecWofstY ;WXY Input: T=Handle, HDL_CurClustHL Output: ClusterHL, FATsector, W = FATsector, Y = FAToffset
+; ==================================;
MOV HDLL_CurClust(T),&ClusterL ;
MOV HDLH_CurClust(T),&ClusterH ;
-; ----------------------------------;
-ClusterToFAT1sectWofstY ;WXY Input : Cluster ; Output: W = FATsector, Y = FAToffset
-; ----------------------------------;
- MOV.B &ClusterL+1,W ;3 W = ClusterLoHI
- MOV.B &ClusterL,Y ;3 Y = ClusterLoLo
- CMP #1,&FATtype ;3 FAT16?
- JZ CTF1S_end ;2 yes
-
-; input : Cluster n, max = 7FFFFF (SDcard up to 256 GB)
+; ==================================;
+ClusterHLtoFAT1sectWofstY ;WXY Input : ClusterHL Output: ClusterHL, FATsector, W = FATsector, Y = FAToffset
+; ==================================;limited to $10000 sectors ==> $800000 clusters ==> 32GB for 4k clusters
+ MOV.B &ClusterL+1,W ;3 W = ClusterLoHI
+ MOV.B &ClusterL,Y ;3 Y = ClusterLOlo
+; input : Cluster n, max = 7FFFFF, (SD_card up to 256 GB with 64k clusters)
; ClusterLoLo*4 = displacement in 512 bytes sector ==> FAToffset
; ClusterHiLo&ClusterLoHi +C << 1 = relative FATsector + orgFAT1 ==> FATsector
; ----------------------------------;
- MOV.B &ClusterH,X ; X = 0:ClusterHiLo
- SWPB X ; X = ClusterHiLo:0
- ADD X,W ; W = ClusterHiLo:ClusterLoHi
+ MOV.B &ClusterH,X ;3 X = 0:ClusterHIlo
+ SWPB X ;1 X = ClusterHIlo:0
+ BIS X,W ;1 W = ClusterHIlo:ClusterLOhi
; ----------------------------------;
- SWPB Y ; Y = ClusterLoLo:0
- ADD Y,Y ;1 Y = ClusterLoLo:0 << 1 + carry for FATsector
- ADDC W,W ; W = ClusterHiLo:ClusterLoHi << 1 = ClusterHiLo:ClusterL / 128
- SWPB Y
-CTF1S_end
- ADD Y,Y ; Y = 0:ClusterLoLo << 1
- RET ;4
+ SWPB Y ;1 Y = ClusterLOlo:0
+ ADD Y,Y ;1 Y = ClusterLOlo:0 << 1 (carry report for FATsector)
+ ADDC W,W ;1 FATsector = W = ClusterHIlo:ClusterLOhi<<1 + Carry
+ SWPB Y ;1 Y = 0:ClusterLOlo
+ ADD Y,Y ;1 FAToffset = Y = 0:ClusterLOlo<<2 for FAT32
+ MOV @RSP+,PC ;4
; ----------------------------------;
-
; use no registers
-; ----------------------------------; Input : Cluster, output: Sector = Cluster_first_sector
-ComputeClusFrstSect ; If Cluster = 1 ==> RootDirectory ==> SectorL = OrgRootDir
-; ----------------------------------; Output: SectorL of Cluster
- MOV #0,&SectorH ;
- MOV &OrgRootDir,&SectorL ;
- CMP.B #0,&ClusterH ; clusterH <> 0 ?
- JNE CCFS_AllOthers ; yes
- CMP #1,&ClusterL ; clusterHL = 1 ? (FAT16 specificity)
- JZ CCFS_RET ; yes, sectorL for FAT16 OrgRootDIR is done
-CCFS_AllOthers ;
-; ----------------------------------;
+; ==================================;
+ClusterHLtoFrstSectorHL ; Input : ClusterHL, output: first SectorHL of ClusterHL
+; ==================================;
.IFDEF MPY ; general case
; ----------------------------------;
MOV &ClusterL,&MPY32L ;3
CCFS_ENTRY
RRA W ;1 shift one right multiplicator
JNC CCFS_LOOP ;2 C = 0 loop back
-CCFS_NEXT ; C = 1, it's done
ADD &OrgClusters,X ;3 OrgClusters = sector of virtual_cluster_0, word size
ADDC #0,Y ;1
MOV X,&SectorL ;3 low result
; ----------------------------------;32~ + 5~ by 2* shift
.ENDIF ; MPY
; ----------------------------------;
-CCFS_RET ;
- RET ;
-; ----------------------------------;
-
-
+ MOV @RSP+,PC ;
; ----------------------------------;
-ComputeHDLcurrentSector ; input: currentHandle, output: Cluster, Sector
-; ----------------------------------;
- MOV HDLL_CurClust(T),&ClusterL;
- MOV HDLH_CurClust(T),&ClusterH;
- CALL #ComputeClusFrstSect ;
- MOV.B HDLB_ClustOfst(T),W ;
- ADD W,&SectorL ;
- ADDC #0,&SectorH ;
- RET ;
-; ----------------------------------;
-
-
-
-; ----------------------------------; input : X = countdown_of_spaces, Y = name pointer in buffer
-ParseEntryNameSpaces ;XY
-; ----------------------------------; output: Z flag, Y is set after the last space char
- CMP #0,X ;
- JZ PENSL_END ;
-; ----------------------------------;
-ParseEntryNameSpacesLoop ;
-; ----------------------------------;
- CMP.B #32,SD_BUF(Y) ; SPACE ?
- JNZ PENSL_END ; no: RET
- ADD #1,Y ;
- SUB #1,X ;
- JNZ ParseEntryNameSpacesLoop;
-PENSL_END ;
- RET ;
-; ----------------------------------;
-
-
-; sequentially load in SD_BUF bytsPerSec bytes of a file opened as read or as load
-; if new bufferLen have a size <= BufferPtr, closes the file then RET.
-; if previous bufferLen had a size < bytsPerSec, closes the file and reloads previous LOADed file if exist.
-; HDLL_CurSize leaves the not yet read size
-; All used registers must be initialized.
-; ==================================;
-Read_File ; <== SD_ACCEPT, READ
-; ==================================;
- MOV &CurrentHdl,T ;
- MOV #0,&BufferPtr ; reset BufferPtr (the buffer is already read)
-; ----------------------------------;
- CMP #bytsPerSec,&BufferLen ;
- JNZ CloseHandleT ; because this last and incomplete sector is already read
- SUB #bytsPerSec,HDLL_CurSize(T) ; HDLL_CurSize is decremented of one sector lenght
- SUBC #0,HDLH_CurSize(T) ;
- ADD.B #1,HDLB_ClustOfst(T) ; current cluster offset is incremented
- CMP.B &SecPerClus,HDLB_ClustOfst(T) ; Cluster Bound reached ?
- JLO SetBufLenAndLoadCurSector ; no
-; ----------------------------------;
-;SearchNextCluster ; yes
-; ----------------------------------;
- MOV.B #0,HDLB_ClustOfst(T) ; reset Current_Cluster sectors offset
- CALL #HDLCurClusToFAT1sectWofstY;WXY Output: W=FATsector, Y=FAToffset, Cluster=HDL_CurCluster
- CALL #ReadFAT1SectorW ;SWX (< 65536)
- MOV #0,HDLH_CurClust(T) ;
- MOV SD_BUF(Y),HDLL_CurClust(T) ;
- CMP #1,&FATtype ; FAT16?
- JZ SetBufLenAndLoadCurSector ;
- MOV SD_BUF+2(Y),HDLH_CurClust(T);
-; ==================================;
-SetBufLenAndLoadCurSector ;WXY <== previous handle reLOAD with BufferPtr<>0
-; ==================================;
- MOV #bytsPerSec,&BufferLen ; preset BufferLen
- CMP #0,HDLH_CurSize(T) ; CurSize > 65535 ?
- JNZ LoadHDLcurrentSector ; yes
- CMP HDLL_CurSize(T),&BufferPtr ; BufferPtr >= CurSize ? (BufferPtr = 0 or see RestorePreviousLoadedBuffer)
- JHS CloseHandleT ; yes
- CMP #bytsPerSec,HDLL_CurSize(T) ; CurSize >= 512 ?
- JHS LoadHDLcurrentSector ; yes
- MOV HDLL_CurSize(T),&BufferLen ; no: adjust BufferLen
; ==================================;
-LoadHDLcurrentSector ; <=== OPEN_WRITE_APPEND
+HDLCurClusPlsOfst2sectorHL ;SWX input: HDL (CurClust, ClustOfst) output: SectorHL
; ==================================;
- CALL #ComputeHDLcurrentSector ; use no registers
+ MOV HDLL_CurClust(T),&ClusterL ;
+ MOV HDLH_CurClust(T),&ClusterH ;
; ==================================;
-ReadSector ;
+ClusterHL2sectorHL ;W input: ClusterHL, ClustOfst output: SectorHL
; ==================================;
- MOV &SectorL,W ; Low
- MOV &SectorH,X ; High
- JMP ReadSectorWX ; SWX then RET
+ CALL #ClusterHLtoFrstSectorHL ;
+ MOV.B HDLB_ClustOfst(T),W ; byte to word conversion
+ ADD W,&SectorL ;
+ ADDC #0,&SectorH ;
+ MOV @RSP+,PC ;
; ----------------------------------;
-
; if first open_load token, save DefaultInputStream
; if other open_load token, decrement token, save previous context
; OPEN subroutine
-; Input : EntryOfst, Cluster = EntryOfst(HDLL_FirstClus())
+; Input : DIREntryOfst, Cluster = DIREntryOfst(HDLL_FirstClus())
; init handle(HDLL_DIRsect,HDLW_DIRofst,HDLL_FirstClus,HDLL_CurClust,HDLL_CurSize)
; Output: Cluster = first Cluster of file, X = CurrentHdl
-; ----------------------------------; input : Cluster, EntryOfst
+; ==================================; input : Cluster, DIREntryOfst
GetFreeHandle ;STWXY init handle(HDLL_DIRsect,HDLW_DIRofst,HDLL_FirstClus = HDLL_CurClust,HDLL_CurSize)
-; ----------------------------------; output : T = new CurrentHdl
- MOV #8,S ; prepare file already open error
- MOV #FirstHandle,T ;
- MOV #0,X ; X = init previous handle as 0
+; ==================================; output : T = new CurrentHdl
+ MOV #4,S ; prepare file already open error
+ MOV #FirstHandle,T ;
+ MOV #0,X ; X = init previous handle as 0
; ----------------------------------;
SearchHandleLoop ;
; ----------------------------------;
CMP.B #0,HDLB_Token(T) ; free handle ?
JZ FreeHandleFound ; yes
-AlreadyOpenTest ; no
+;AlreadyOpenTest ; no
CMP &ClusterH,HDLH_FirstClus(T);
JNE SearchNextHandle ;
CMP &ClusterL,HDLL_FirstClus(T);
- JZ InitHandleRET ; error 8: Already Open abort ===>
+ JZ OPEN_Error ; error 4: Already Open abort ===>
SearchNextHandle ;
MOV T,X ; handle is occupied, keep it in X as previous handle
ADD #HandleLenght,T ;
CMP #HandleEnd,T ;
JNZ SearchHandleLoop ;
- ADD S,S ; 16 = no more handle error, abort ===>
-InitHandleRET ;
- RET ;
+ MOV #8,S ;
+ JMP OPEN_Error ; error 8 = no more handle error, abort ===>
; ----------------------------------;
FreeHandleFound ; T = new handle, X = previous handle
; ----------------------------------;
MOV T,&CurrentHdl ;
MOV X,HDLW_PrevHDL(T) ; link to previous handle
; ----------------------------------;
-CheckCaseOfPreviousToken ;
+;CheckCaseOfPreviousToken ;
; ----------------------------------;
CMP #0,X ; existing previous handle?
JZ InitHandle ; no
ADD &TOIN,HDLW_BUFofst(X) ; in previous handle, add interpret offset to Buffer offset
; ----------------------------------;
-CheckCaseOfLoadFileToken ;
+;CheckCaseOfLoadFileToken ;
; ----------------------------------;
CMP.B #0,W ; open_type is LOAD (-1) ?
JGE InitHandle ; W>=0, no
; ----------------------------------;
InitHandle ;
; ----------------------------------;
- MOV.B W,HDLB_Token(T) ; marks handle as open type: <0=LOAD, 1=READ, 2=WRITE, 4=DEL
+ MOV.B W,HDLB_Token(T) ; marks handle as open type: <0=LOAD, 1=READ, 2=DEL, 4=WRITE, 8=APPEND
MOV.B #0,HDLB_ClustOfst(T) ; clear ClustOfst
MOV &SectorL,HDLL_DIRsect(T); init handle DIRsectorL
- MOV &SectorH,HDLH_DIRsect(T);
- MOV &EntryOfst,Y ;
+ MOV &SectorH,HDLH_DIRsect(T);
+ MOV &DIREntryOfst,Y ;
MOV Y,HDLW_DIRofst(T) ; init handle SD_BUF offset of DIR entry
MOV SD_BUF+26(Y),HDLL_FirstClus(T); init handle firstcluster of file (to identify file)
- MOV SD_BUF+20(Y),HDLH_FirstClus(T)
- MOV SD_BUF+26(Y),HDLL_CurClust(T) ; init handle CurrentCluster
- MOV SD_BUF+20(Y),HDLH_CurClust(T)
+ MOV SD_BUF+20(Y),HDLH_FirstClus(T); = 0 if new DIRentry (create write file)
+ MOV SD_BUF+26(Y),HDLL_CurClust(T); init handle CurrentCluster
+ MOV SD_BUF+20(Y),HDLH_CurClust(T); = 0 if new DIRentry (create write file)
MOV SD_BUF+28(Y),HDLL_CurSize(T); init handle LOW currentSizeL
- MOV SD_BUF+30(Y),HDLH_CurSize(T);
+ MOV SD_BUF+30(Y),HDLH_CurSize(T); = 0 if new DIRentry (create write file)
MOV #0,&BufferPtr ; reset BufferPtr all type of files
- CMP.B #2,W ; is a WRITE file handle?
- JZ ComputeHDLcurrentSector ; = 2, is a WRITE file
- JGE InitHandleRET ; > 2, is a file to be deleted
- MOV #0,HDLW_BUFofst(T) ; < 2, is a READ or a LOAD file
+ CMP.B #2,W ; del file request (2) ?
+ JZ HandleRET ;
+ JGE HDLCurClusPlsOfst2sectorHL ; set ClusterHL and SectorHL for all WRITE requests
+; ----------------------------------;
+ MOV #0,HDLW_BUFofst(T) ; < 2, is a READ or a LOAD request
CMP.B #-1,W ;
JZ ReplaceInputBuffer ; case of first loaded file
- JL SaveBufferContext ; case of other loaded file
- JMP SetBufLenAndLoadCurSector ; case of READ file
+ JL SaveAcceptContext ; case of other loaded file
+ JMP SetBufLenLoadCurSector ; case of READ file
; ----------------------------------;
ReplaceInputBuffer ;
; ----------------------------------;
- MOV #SDIB_ORG,&FCIB+2 ; set SD Input Buffer as Current Input Buffer before return to QUIT
- MOV #SD_ACCEPT,&ACCEPT+2 ; redirect ACCEPT to SD_ACCEPT before return to QUIT
+ MOV #SDIB_ORG,&CIB_ORG ; set SD Input Buffer as Current Input Buffer before return to QUIT
+ MOV #SD_ACCEPT,&PFAACCEPT ; redirect ACCEPT to SD_ACCEPT before return to QUIT
; ----------------------------------;
-SaveBufferContext ; (see CloseHandleT)
+SaveAcceptContext ; (see CloseHandle)
; ----------------------------------;
- MOV &SOURCE_LEN,HDLW_PrevLEN(T) ; = CPL
- SUB &TOIN,HDLW_PrevLEN(T) ; PREVLEN = CPL - >IN
- MOV &SOURCE_ADR,HDLW_PrevORG(T) ; = CIB
- ADD &TOIN,HDLW_PrevORG(T) ; PrevORG = CIB + >IN
- JMP SetBufLenAndLoadCurSector ; then RET
+ MOV &SOURCE_LEN,HDLW_PrevLEN(T) ;
+ MOV &SOURCE_ORG,HDLW_PrevORG(T) ;
+ MOV &TOIN,HDLW_PrevTOIN(T) ;
+ JMP SetBufLenLoadCurSector ; then RET
; ----------------------------------;
+; sequentially load in SD_BUF bytsPerSec bytes of a file opened as read or load
+; HDLL_CurSize leaves the not yet read size
+; All used registers must be initialized.
+; ==================================;
+Read_File ; <== SD_ACCEPT, READ
+; ==================================;
+ MOV &CurrentHdl,T ;
+ MOV #0,&BufferPtr ; reset BufferPtr (the buffer is already read)
; ----------------------------------;
-CloseHandleHere ;
-; ----------------------------------;
- MOV.B #0,HDLB_Token(T) ; release the handle
- MOV @T,T ; T = previous handle
- MOV T,&CurrentHdl ; becomes current handle
- CMP #0,T ;
- JZ CloseHandleRet ; if no more handle
-; ----------------------------------;
-RestorePreviousLoadedBuffer ;
+ CMP #bytsPerSec,&BufferLen ;
+ JNZ CloseHandle ; because this last and incomplete sector is already read
+ SUB #bytsPerSec,HDLL_CurSize(T) ; HDLL_CurSize is decremented of one sector lenght
+ SUBC #0,HDLH_CurSize(T) ;
+ ADD.B #1,HDLB_ClustOfst(T) ; current cluster offset is incremented
+ CMP.B &SecPerClus,HDLB_ClustOfst(T) ; Cluster Bound reached ?
+ JNC SetBufLenLoadCurSector ; no
; ----------------------------------;
- MOV HDLW_BUFofst(T),&BufferPtr ; restore previous BufferPtr
- CALL #SetBufLenAndLoadCurSector ; then reload previous buffer
- BIC #Z,SR ;
+;SearchNextClusterInFAT1 ;
; ----------------------------------;
-CloseHandleRet ;
- RET ; Z = 1 if no more handle
+ MOV.B #0,HDLB_ClustOfst(T) ; reset Current_Cluster sectors offset
+ CALL #HDLcurClus2FATsecWofstY;WXY Output: FATsector W=FATsector, Y=FAToffset
+ CALL #ReadFAT1SectorW ;SWX (< 65536)
+ MOV #0,HDLH_CurClust(T) ; preset HDLH_CurClust(T)=0 for FAT16
+ MOV SD_BUF(Y),HDLL_CurClust(T) ;
+ MOV SD_BUF+2(Y),HDLH_CurClust(T); set HDLH_CurClust(T)=0 for FAT32
+; ==================================;
+SetBufLenLoadCurSector ;WXY <== previous handle reLOAD with BufferPtr<>0
+; ==================================;
+ MOV #bytsPerSec,&BufferLen ; preset BufferLen
+ CMP #0,HDLH_CurSize(T) ; CurSize > 65535 ?
+ JNZ LoadCurSectorHL ; yes
+ CMP HDLL_CurSize(T),&BufferPtr ; BufferPtr >= CurSize ? (BufferPtr = 0 or see RestorePreviousLoadedBuffer)
+ JC TokenToCloseTest ; yes because all the file is already read
+ CMP #bytsPerSec,HDLL_CurSize(T) ; CurSize >= 512 ?
+ JC LoadCurSectorHL ; yes
+ MOV HDLL_CurSize(T),&BufferLen ; no: adjust BufferLen
+; ==================================;
+LoadCurSectorHL ;
+; ==================================;
+ CALL #HDLCurClusPlsOfst2sectorHL;SWX
+; ==================================;
+ReadSectorHL ;
+; ==================================;
+ MOV &SectorL,W ; Low
+ MOV &SectorH,X ; High
+ JMP ReadSectorWX ; SWX then RET with W = 0, SR(Z) = 1
; ----------------------------------;
; ==================================;
-CloseHandleT ; <== CLOSE, Read_File, TERM2SD", OPEN_DEL
+CloseHandle ; <== CLOSE, TERM2SD", OPEN_DEL
; ==================================;
- MOV &CurrentHdl,T ;
- CMP #0,T ; no handle?
- JZ CloseHandleRet ; RET
+ MOV &CurrentHdl,T ;
+ CMP #0,T ; no handle?
+ JZ HandleRet ; RET
; ----------------------------------;
.IFDEF SD_CARD_READ_WRITE
- CMP.B #2,HDLB_Token(T) ; opened as write (updated) file ?
- JNZ TestClosedToken ; no
- CALL #WriteBuffer ;SWXY
- CALL #OPWW_UpdateDirectory ;SWXY
- .ENDIF ;
; ----------------------------------;
-TestClosedToken ;
+ CMP.B #4,HDLB_Token(T) ; WRITE file ?
+ JL TokenToCloseTest ; no, case of DEL READ LOAD file
+;; ----------------------------------; optionnal
+; MOV &BufferPtr,W ;
+;RemFillZero ;the remainder of sector
+; CMP #BytsPerSec,W ;2 buffer full ?
+; JZ UpdateWriteSector ;2 remainding of buffer is full filled with $FF
+; MOV.B #-1,SD_BUF(W) ;3
+; ADD #1,W ;1
+; JMP RemFillZero ;2
+; ----------------------------------;
+;UpdateWriteSector ; case of any WRITE file
+; ----------------------------------;
+ CALL #WriteSD_Buf ;SWX
+; ----------------------------------;
+;Load Update DirEntry ;SWXY
+; ----------------------------------;
+ MOV HDLL_DIRsect(T),W ;
+ MOV HDLH_DIRsect(T),X ;
+ CALL #ReadSectorWX ;SWX SD_buffer = DIRsector
+ MOV HDLW_DIRofst(T),Y ; Y = DirEntryOffset
+ CALL #GetYMDHMSforDIR ; X=DATE, W=TIME
+ MOV X,SD_BUF+18(Y) ; access date
+ MOV W,SD_BUF+22(Y) ; modified time
+ MOV X,SD_BUF+24(Y) ; modified date
+ MOV HDLL_CurSize(T),SD_BUF+28(Y); save new filesize
+ MOV HDLH_CurSize(T),SD_BUF+30(Y);
+ MOV HDLL_DIRsect(T),W ;
+ MOV HDLH_DIRsect(T),X ;
+ CALL #WriteSectorWX ;SWX
; ----------------------------------;
- CMP.B #0,HDLB_Token(T) ;
+ .ENDIF
+; ==================================;
+TokenToCloseTest ; <== Read_File
+; ==================================;
+ CMP.B #-1,HDLB_Token(T) ;
+ JZ RestoreDefaultACCEPT ;
+ JL LoadFileToClose ;
; ----------------------------------;
-CaseOfAnyReadWriteDelFileIsClosed ;
+;CaseOfAnyReadWriteDelFileIsClosed ; token >= -1
; ----------------------------------;
- JGE CloseHandleHere ; then RET
+ JMP CloseHandleRightNow ; then RET
; ----------------------------------;
-CaseOfAnyLoadedFileIsClosed ; -- org' len' R-- QUIT3 dst_ptr dst_len SD_ACCEPT
+RestoreDefaultACCEPT ;
; ----------------------------------;
-RestoreSD_ACCEPTContext ;
+ MOV #TIB_ORG,&CIB_ORG ; restore TIB as Current Input Buffer and..
+ MOV #BODYACCEPT,&PFAACCEPT ; restore default ACCEPT for next line (next loop of QUIT)
; ----------------------------------;
- MOV HDLW_PrevLEN(T),TOS ;
- MOV HDLW_PrevORG(T),0(PSP) ; -- org len
+LoadFileToClose ; R-- SD_ACCEPT(SDA_InitSrcAddr)
; ----------------------------------;
-ReturnOfSD_ACCEPT ;
+ MOV #SDA_RetOfCloseHandle,0(RSP); R-- SD_ACCEPT(SDA_RetOfCloseHandle)
; ----------------------------------;
- ADD #6,RSP ; R-- QUIT3 empties return stack
- MOV @RSP+,IP ; skip return to SD_ACCEPT
+;RestorePreviousContext ; ready for the next QUIT loop
; ----------------------------------;
- CALL #CloseHandleHere ; Z = 1 if no more handle
+ MOV HDLW_PrevLEN(T),&SOURCE_LEN ;
+ MOV HDLW_PrevORG(T),&SOURCE_ORG ;
+ MOV HDLW_PrevTOIN(T),&TOIN ;
; ----------------------------------;
-CheckFirstLoadedFileIsClosed ;
+CloseHandleRightNow ;
; ----------------------------------;
- JZ RestoreDefaultACCEPT ;
- MOV #NOECHO,PC ; -- org len if return to SD_ACCEPT
+ MOV.B #0,HDLB_Token(T) ; release the handle
+ MOV @T,T ; T = previous handle
+ MOV T,&CurrentHdl ; becomes current handle
+ CMP #0,T ; no more handle ?
+ JZ HandleRet ; with SR(Z) = 1
+; ----------------------------------;
+RestorePreviousLoadedBuffer ;
+; ----------------------------------;
+ MOV HDLW_BUFofst(T),&BufferPtr ; restore previous BufferPtr
+ CALL #SetBufLenLoadCurSector ; then reload previous buffer
+ BIC #Z,SR ; force SR(Z) = 0
; ----------------------------------;
-RestoreDefaultACCEPT ; if no more handle, first loaded file is closed...
+HandleRet ;
; ----------------------------------;
- MOV #TIB_ORG,&FCIB+2 ; restore TIB as Current Input Buffer for next line (next QUIT)
- MOV #BODYACCEPT,&ACCEPT+2 ; restore default ACCEPT for next line (next QUIT)
- MOV #ECHO,PC ; -- org len if return to Terminal ACCEPT
+ MOV @RSP+,PC ; SR(Z) state is used by SD_ACCEPT(SDA_RetOfCloseHandle)
+; ----------------------------------;
+
+; ----------------------------------;
+SDA_EOF_IP .word SDA_EndOfFile ; defines return address from ECHO|NOECHO to SD_ACCEPT
+; ----------------------------------;
+SDA_RetOfCloseHandle ; -- SDIB_org SDIB_end SDIB_ptr R-- closed_handle Z = 1 if no more handle
+; ----------------------------------;
+ MOV #SDA_EOF_IP,IP ;
+ JZ EchoForDefaultAccept ;
+ MOV #NOECHO,PC ;
+EchoForDefaultAccept ;
+ MOV #ECHO,PC ;
; ----------------------------------;
.IFDEF SD_CARD_READ_WRITE
+; ==================================;
+HDLFrstClus2FATsecWofstY ;WXY Input: T=Handle, HDL_CurClustHL Output: ClusterHL, FATsector, W = FATsector, Y = FAToffset
+; ==================================;
+ MOV HDLL_FirstClus(T),&ClusterL ;
+ MOV HDLH_FirstClus(T),&ClusterH ;
+ JMP ClusterHLtoFAT1sectWofstY ;
+; ----------------------------------;
+
;-----------------------------------------------------------------------
; SD_READ_WRITE FORTH words
;-----------------------------------------------------------------------
; if pathname is a directory, change current directory.
; if an error is encountered, no handle is set, error message is displayed.
-; READ" acts also as CD dos command :
+; READ" acts also as CD dos command :
; - READ" a:\misc\" set a:\misc as current directory
; - READ" a:\" reset current directory to root
; - READ" ..\" change to parent directory
; to close all files type : WARM (or COLD, RESET)
-; ----------------------------------;
+; ==================================;
FORTHWORDIMM "READ\34" ; immediate
-; ----------------------------------;
+; ==================================;
READDQ
- MOV.B #1,W ; W = OpenType
+ MOV.B #1,W ; W = READ request
JMP Open_File ;
; ----------------------------------;
-;Z WRITE" pathame" -- immediate
-; open or create the file designed by pathname.
-; an error occurs if the file is already opened.
-; the last sector of the file is loaded in buffer, and bufferPtr leave the address of the first free byte.
-; compile state : compile WRITE" pathname"
-; exec state : open or create entry selected by pathname
+;Z DEL" pathame" -- immediate
+; ==================================;
+ FORTHWORDIMM "DEL\34" ; immediate
+; ==================================;
+ MOV.B #2,W ; W = DEL request
+ JMP Open_File ;
; ----------------------------------;
+
+;Z WRITE" pathame" -- immediate
+; if file exist, free all clusters then switch handle to WRITE
+; if "no such file", open a write handle
+; ==================================;
FORTHWORDIMM "WRITE\34" ; immediate
-; ----------------------------------;
+; ==================================;
WRITEDQ
- MOV.B #2,W ; W = OpenType
+ MOV.B #4,W ; W = WRITE request
JMP Open_File ;
; ----------------------------------;
-
-;Z DEL" pathame" -- immediate
-; compile state : compile DEL" pathname"
-; exec state : DELETE entry selected by pathname
-
-; ----------------------------------;
- FORTHWORDIMM "DEL\34" ; immediate
-; ----------------------------------;
-DELDQ
- MOV.B #4,W ; W = OpenType
+;Z APPEND" pathame" -- immediate
+; open the file designed by pathname.
+; the last sector of the file is loaded in buffer, and bufferPtr leave the address of the first free byte.
+; ==================================;
+ FORTHWORDIMM "APPEND\34" ; immediate
+; ==================================;
+ MOV.B #8,W ; W = APPEND request
JMP Open_File ;
; ----------------------------------;
-
-;Z CLOSE --
+;Z CLOSE --
; close current handle
-; ----------------------------------;
+; ==================================;
FORTHWORD "CLOSE" ;
-; ----------------------------------;
- CALL #CloseHandleT ;
-CLOSE_END
- mNEXT ;
+; ==================================;
+ CALL #CloseHandle ;
+ MOV @IP+,PC ;
; ----------------------------------;
.ENDIF ; SD_CARD_READ_WRITE
;Z LOAD" pathame" -- immediate
; compile state : compile LOAD" pathname"
; exec state : open a file from SD card via its pathname
-; see Open_File primitive for pathname conventions
+; see Open_File primitive for pathname conventions
; the opened file becomes the new input stream for INTERPRET
; this command is recursive, limited only by the count of free handles (up to 8)
-; LOAD" acts also as dos command "CD" :
+; LOAD" acts also as dos command "CD" :
; - LOAD" \misc\" set a:\misc as current directory
; - LOAD" \" reset current directory to root
; - LOAD" ..\" change to parent directory
-; ----------------------------------;
+; ==================================;
FORTHWORDIMM "LOAD\34" ; immediate
+; ==================================;
+ MOV.B #-1,W ; W = LOAD request
; ----------------------------------;
- MOV.B #-1,W ; W = OpenType
-; ----------------------------------;
-
; ======================================================================
; OPEN FILE primitive
; compile state : compile OpenType, compile SQUOTE and the string of provided pathname
; exec state : open a file from SD card via its pathname
; convert counted string found at HERE in a String then parse it
-; media identifiers "A:", "B:" ... are ignored (only one SD_Card),
; char "\" as first one initializes rootDir as SearchDir.
; if file found, if not already open and if free handle...
; ...open the file as read and return the handle in CurrentHdl.
; if the pathname is a directory, change current directory, no handle is set.
; if an error is encountered, no handle is set, an error message is displayed.
-; ----------------------------------;
+; ==================================;
Open_File ; --
-; ----------------------------------;
+; ==================================;
SUB #2,PSP ;
MOV TOS,0(PSP) ;
- MOV W,TOS ; -- Open_type (0=LOAD", 1=READ", 2=WRITE", 4=DEL")
+ MOV W,TOS ; -- Open_type (-1=LOAD", 1=READ", 2=DEL", 4=WRITE", 8=APPEND")
CMP #0,&STATE ;
JZ OPEN_EXEC ;
; ----------------------------------;
-OPEN_COMP ;
+;OPEN_COMP ;
mDOCOL ; if compile state R-- LOAD"_return
.word lit,lit,COMMA,COMMA ; compile open_type as literal
.word SQUOTE ; compile string_exec + string
; ----------------------------------;
OPEN_EXEC ;
mDOCOL ; if exec state
- .word lit,'"',WORDD,COUNT ; -- open_type addr u
- FORTHtoASM ;
+ .word lit,'"',WORDD,COUNT ; -- open_type addr cnt
+ mNEXTADR ;
MOV @RSP+,IP ;
; ----------------------------------;
-ParenOpen ; -- open_type HERE HERE as pathname ptr
-; ----------------------------------;
- MOV @PSP+,rDOCON ; rDOCON = addr = pathname PTR
- ADD rDOCON,TOS ; TOS = EOS (End Of String) = pathname end
+ParenOpen ; -- open_type addr cnt execution of OPEN_COMP: IP points to OPEN_COMP(EXIT),
+; ----------------------------------; case of OPEN_EXEC: IP points to INTERPRET(INTLOOP).
+ MOV #0,S ;
+ BIT.B #CD_SD,&SD_CDIN ; SD_memory in SD_Card module ?
+ JZ Q_SD_not_init ; yes
+ BIC #BUS_SD,&SD_SEL ; no, hide SIMO, SOMI & SCK pins (SD not initialized memory)
+Q_SD_not_init ;
+ BIT #BUS_SD,&SD_SEL ; is SD init by SYS ?
+ JNZ OPEN_LetUsGo ; no --> with TOS = -1 does abort
+ MOV #NO_SD_CARD,PC ; S = 0 --> error 0
+; ----------------------------------;
+OPEN_LetUsGo ;
+; ----------------------------------;
+ MOV #1,S ; error 1
+ CMP #0,TOS ; cnt = 0 ?
+ JZ OPEN_Error ; yes: error 1 ===>
+ MOV @PSP+,rDOCON ; -- open_type cnt rDOCON = addr = pathname PTR
+ ADD rDOCON,TOS ; -- open_type EOS TOS = EOS (End Of String) = pathname end
.IFDEF SD_CARD_READ_WRITE ;
- MOV TOS,&EndOfPath ; for WRITE CREATE part
+ MOV TOS,&PathName_END ; for WRITE CREATE part
.ENDIF
+ MOV &DIRClusterL,&ClusterL ; set DIR cluster
+ MOV &DIRClusterH,&ClusterH ;
; ----------------------------------;
-OPN_PathName ;
-; ----------------------------------;
- MOV #1,S ; error 1
- MOV &DIRClusterL,&ClusterL ;
- MOV &DIRclusterH,&ClusterH ;
- CMP rDOCON,TOS ; PTR = EOS ? (end of pathname ?)
- JZ OPN_NoPathName ; yes: error 1 ===>
-; ----------------------------------;
- CMP.B #':',1(rDOCON) ; A: B: C: ... in pathname ?
- JNZ OPN_AntiSlashStartTest ; no
- ADD #2,rDOCON ; yes : skip drive because not used, only one SD_card
+;OPN_AntiSlashFirstTest ;
; ----------------------------------;
-OPN_AntiSlashStartTest ;
- CMP.B #'\\',0(rDOCON) ; "\" as first char ?
- JNZ OPN_SearchDirSector ; no
+ CMP.B #'\\',0(rDOCON) ; "\" as first char ?
+ JNZ OPN_SearchInDIR ; no
ADD #1,rDOCON ; yes : skip '\' char
- MOV &FATtype,&ClusterL ; FATtype = 1 as FAT16 RootDIR, FATtype = 2 = FAT32RootDIR
MOV #0,&ClusterH ;
+ JMP OPN_AntiSlashFirstNext ;
; ----------------------------------;
-OPN_EndOfStringTest ; <=== dir found in path
+OPN_SearchInDIR ; <=== dir found in path
; ----------------------------------;
- CMP rDOCON,TOS ; PTR = EOS ? (end of pathname ?)
- JZ OPN_SetCurrentDIR ; yes
+ MOV rDOCON,&PathName_PTR ; save Pathname ptr
; ----------------------------------;
-OPN_SearchDirSector ;
+OPN_LoadDIRcluster ; <=== next DIR cluster loopback
; ----------------------------------;
- MOV rDOCON,&Pathname ; save Pathname ptr
- CALL #ComputeClusFrstSect ; output: SectorHL
- MOV #32,rDODOES ; preset countdown for FAT16 RootDIR sectors
- CMP #2,&FATtype ; FAT32?
- JZ OPN_SetDirSectors ; yes
- CMP &ClusterL,&FATtype ; FAT16 AND RootDIR ?
- JZ OPN_LoadDIRsector ; yes
-OPN_SetDirSectors ;
- MOV &SecPerClus,rDODOES ;
+ CALL #ClusterHLtoFrstSectorHL; output: first Sector of this cluster
+ MOV &SecPerClus,rDODOES ; set sectors count down
; ----------------------------------;
-OPN_LoadDIRsector ; <=== Dir Sector loopback
+OPN_LoadDIRsector ; <=== next DIR Sector loopback
; ----------------------------------;
- CALL #ReadSector ;SWX
+ CALL #ReadSectorHL ;SWX,
+ MOV #2,S ; prepare error 2
+; ----------------------------------; W = 0 = DIREntryOfst
+OPN_SearchDIRentry ; <=== next DIR_Entry loopback
; ----------------------------------;
- MOV #2,S ; prepare no such file error
- MOV #0,W ; init entries count
-; ----------------------------------;
-OPN_SearchDIRentry ; <=== DIR Entry loopback
-; ----------------------------------;
- MOV W,Y ; 1
- RLAM #4,Y ; --> * 16
- ADD Y,Y ; 1 --> * 2
- MOV Y,&EntryOfst ; EntryOfst points to first free entry
- CMP.B #0,SD_BUF(Y) ; free entry ? (end of entries in DIR)
- JZ OPN_NoSuchFile ; error 2 NoSuchFile, used by create ===>
+ MOV W,&DIREntryOfst ; update DIREntryOfst
+ CMP.B #0,SD_BUF(W) ; free entry ?
+ JZ OPN_NoSuchFile ; NoSuchFile error = 2 ===>
+ MOV W,Y ; 1 W = DIREntryOfst, Y = Entry_name pointer
MOV #8,X ; count of chars in entry name
; ----------------------------------;
-OPN_CompareName8chars ;
+OPN_CompareName ;
; ----------------------------------;
- CMP.B @rDOCON+,SD_BUF(Y) ; compare Pathname(char) with DirEntry(char)
- JNZ OPN_FirstCharMismatch ;
+ MOV.B @rDOCON+,T ;
+ CMP.B T,SD_BUF(Y) ; compare Pathname with DirEntry1to8, char by char
+ JNZ OPN_CompareNameNext ;
ADD #1,Y ;
SUB #1,X ;
- JNZ OPN_CompareName8chars ; loopback if chars 1 to 7 of string and DirEntry are equal
- ADD #1,rDOCON ; 9th char of Pathname is always a dot
+ JNZ OPN_CompareName ;
+ MOV.B @rDOCON+,T ; 9th char of Pathname should be '.'
+ JZ OPN_CompareNameDone ; if X = 0
; ----------------------------------;
-OPN_FirstCharMismatch ;
- CMP.B #'.',-1(rDOCON) ; FirstNotEqualChar of Pathname = dot ?
- JZ OPN_DotFound ;
+OPN_CompareNameNext ; remainder of 8 chars of DIR_entry name must be spaces
; ----------------------------------;
-OPN_DotNotFound ;
+ CMP.B #32,SD_BUF(Y) ; parse DIR entry up to 8th chars
+ JNZ OPN_DIRentryMismatch ; if a char of DIR entry name <> space
+ ADD #1,Y ;
+ SUB #1,X ;
+ JNZ OPN_CompareNameNext ;
; ----------------------------------;
- ADD #3,X ; for next cases not equal chars of entry until 11 must be spaces
- CALL #ParseEntryNameSpaces ; for X + 3 chars
- JNZ OPN_DIRentryMismatch ; if a char entry <> space
- CMP.B #'\\',-1(rDOCON) ; FirstNotEqualChar of Pathname = "\" ?
+OPN_CompareNameDone ; T = "." or FirstNotEqualChar
+; ----------------------------------;
+ CMP.B #'\\',T ; FirstNotEqualChar of Pathname = "\" ?
JZ OPN_EntryFound ;
- CMP rDOCON,TOS ; EOS exceeded ?
- JLO OPN_EntryFound ; yes
+; ----------------------------------;
+ MOV #3,X ; to compare 3 char extension
+ CMP.B #'.',T ; FirstNotEqualChar of Pathname = dot ?
+ JNZ OPN_CompExtensionNext ; if not
+; ----------------------------------;
+OPN_CompareExtension ;
+; ----------------------------------;
+ CMP.B @rDOCON+,SD_BUF(Y) ; compare Pathname_ext(char) with DirEntry9to11(char)
+ JNZ OPN_CompExtensionNext ;
+ ADD #1,Y ;
+ SUB #1,X ;
+ JNZ OPN_CompareExtension ;
+ JZ OPN_CompExtensionDone ;
+; ----------------------------------;
+OPN_CompExtensionNext ; remainder of 8 chars of DIR_entry extension must be spaces
+; ----------------------------------;
+ CMP.B #32,SD_BUF(Y) ; parse DIR entry up to 11th chars
+ JNZ OPN_DIRentryMismatch ; if a char of DIR entry extension <> space
+ ADD #1,Y ;
+ SUB #1,X ;
+ JNZ OPN_CompExtensionNext ;
+; ----------------------------------;
+OPN_CompExtensionDone ;
+; ----------------------------------;
+ CMP.B #'.',-2(rDOCON) ; LastCharEqual = dot ? (case of Pathname = "..\" which matches with first DIR entry = ".")
+ JZ OPN_DIRentryMismatch ; to compare with 2th DIR entry, the good one.
+ CMP TOS,rDOCON ; EOS reached ?
+ JC OPN_EntryFound ; yes
; ----------------------------------;
OPN_DIRentryMismatch ;
; ----------------------------------;
- MOV &pathname,rDOCON ; reload Pathname
- ADD #1,W ; inc entry
- CMP #16,W ; 16 entry in a sector
- JNZ OPN_SearchDIRentry ; ===> loopback for search next DIR entry
+ MOV &PathName_PTR,rDOCON ; reload PathName_PTR as it was at last OPN_SearchInDIR
+ ADD #32,W ; W = DIREntryOfst + DIRentrySize
+ CMP #512,W ; out of sector bound ?
+ JNZ OPN_SearchDIRentry ; no, loopback for search next DIR entry in same sector
; ----------------------------------;
ADD #1,&SectorL ;
ADDC #0,&SectorH ;
- SUB #1,rDODOES ; dec count of Dir sectors
- JNZ OPN_LoadDIRsector ; ===> loopback for search next DIR sector
+ SUB #1,rDODOES ; count of Dir sectors reached ?
+ JNZ OPN_LoadDIRsector ; no, loopback to load next DIR sector in same cluster
+; ----------------------------------;
+ CALL #ClusterHLtoFAT1sectWofstY ; load FATsector in SD_Buffer, set Y = FAToffset
+ CMP #-1,0(Y) ; last DIR cluster ?
+ JNZ OPN_SetNextDIRcluster ;
+ CMP #0FFFh,2(Y) ;
+ .IFNDEF SD_CARD_READ_WRITE ;
+ JZ OPN_NoSuchFile ; yes, NoSuchFile error = 2 ===>
+ .ELSE ;
+ JNZ OPN_SetNextDIRcluster ; no
+;OPN_QcreateDIRentry ; -- open_type EOS
+ CMP #4,0(PSP) ; open type = WRITE" or APPEND" ?
+ JNC OPN_NoSuchFile ; no: NoSuchFile error = 2 ===>
+;OPN_AddDIRcluster ; yes
+ PUSH #OPN_LoadDIRcluster ; as RETurn of GetNewCluster: ===> loopback to load this new DIR cluster
+; ==================================;
+GetNewCluster ; called by Write_File
+; ==================================;
+ PUSH Y ; push previous FAToffset
+ PUSH W ; push previous FATsector
+ CALL #SearchMarkNewClusterHL ;SWXY input: W = FATsector Y = FAToffset, output: ClusterHL, W = FATsector of New cluster
+ CMP @RSP,W ; previous and new clusters are in same FATsector?
+ JZ LinkClusters ; yes
; ----------------------------------;
- MOV #4,S ;
- JMP OPN_EndOfDIR ; error 4 ===>
+;UpdateNewClusterFATs ;
; ----------------------------------;
-
+ MOV @RSP,W ; W = previous FATsector
+ CALL #ReadFAT1SectorW ;SWX reload previous FATsector in buffer to link clusters
; ----------------------------------;
-OPN_DotFound ; not equal chars of entry name until 8 must be spaces
+LinkClusters ;
; ----------------------------------;
- CMP.B #'.',-2(rDOCON) ; LastCharEqual = dot ?
- JZ OPN_DIRentryMismatch ; case of first DIR entry = "." and Pathname = "..\"
- CALL #ParseEntryNameSpaces ; parse X spaces, X{0,...,7}
- JNZ OPN_DIRentryMismatch ; if a char entry <> space
- MOV #3,X ;
+ MOV @RSP+,W ; W = previous FATsector
+ MOV @RSP+,Y ; Y = previous FAToffset
+ MOV &ClusterL,SD_BUF(Y) ; store new cluster to current cluster address in previous FATsector buffer
+ MOV &ClusterH,SD_BUF+2(Y) ;
+ JMP SaveSectorWtoFATs ;SWXY update FATs from SD_BUF to W = previous FATsector, then RET
+; ==================================;
+ .ENDIF ; SD_CARD_READ_WRITE ;
; ----------------------------------;
-OPN_CompareExt3chars ;
+OPN_SetNextDIRcluster ;
; ----------------------------------;
- CMP.B @rDOCON+,SD_BUF(Y) ; compare string(char) with DirEntry(char)
- JNZ OPN_ExtNotEqualChar ;
- ADD #1,Y ;
- SUB #1,X ;
- JNZ OPN_CompareExt3chars ; nothing to do if chars equal
- JMP OPN_EntryFound ;
-OPN_ExtNotEqualChar ;
- CMP rDOCON,TOS ; EOS exceeded ?
- JHS OPN_DIRentryMismatch ; no, loop back
- CMP.B #'\\',-1(rDOCON) ; FirstNotEqualChar = "\" ?
- JNZ OPN_DIRentryMismatch ;
- CALL #ParseEntryNameSpaces ; parse X spaces, X{0,...,3}
- JNZ OPN_DIRentryMismatch ; if a char entry <> space, loop back
+ MOV @Y+,&ClusterL ;
+ MOV @Y,&ClusterH ;
+ JMP OPN_LoadDIRcluster ; ===> loop back to load this new DIR cluster
+; ----------------------------------;
+
; ----------------------------------;
OPN_EntryFound ; Y points on the file attribute (11th byte of entry)
; ----------------------------------;
- MOV &EntryOfst,Y ; reload DIRentry
- MOV SD_BUF+26(Y),&ClusterL ; first clusterL of file
- MOV SD_BUF+20(Y),&ClusterH ; first clusterT of file, always 0 if FAT16
-OPN_EntryFoundNext
- BIT.B #10h,SD_BUF+11(Y) ; test if Directory or File
- JZ OPN_FileFound ;
+; MOV W,&DIREntryOfst ;
+ MOV SD_BUF+14H(W),&ClusterH ; first clusterH of file
+ MOV SD_BUF+1Ah(W),&ClusterL ; first clusterL of file
+ BIT.B #10h,SD_BUF+0Bh(W) ; test if Directory or File
+ JZ OPN_FileFound ; is a file
; ----------------------------------;
-OPN_DIRfound ; entry is a DIRECTORY
+;OPN_DIRfound ; entry is a DIRECTORY
; ----------------------------------;
CMP #0,&ClusterH ; case of ".." entry, when parent directory is root
JNZ OPN_DIRfoundNext ;
CMP #0,&ClusterL ; case of ".." entry, when parent directory is root
JNZ OPN_DIRfoundNext ;
- MOV &FATtype,&ClusterL ; set cluster as RootDIR cluster
+OPN_AntiSlashFirstNext
+ MOV #2,&ClusterL ; set clusterL as RootDIR cluster
OPN_DIRfoundNext ;
- CMP rDOCON,TOS ; EOS exceeded ?
- JHS OPN_EndOfStringTest ; no: (we presume that FirstNotEqualChar = "\") ==> loop back
+ CMP TOS,rDOCON ; EOS reached ?
+ JNC OPN_SearchInDIR ; no: (rDOCON points after "\") ==> loop back
; ----------------------------------;
-OPN_SetCurrentDIR ; -- open_type ptr
+;OPN_SetCurrentDIR ; -- open_type ptr PathName_PTR is set on name of this DIR
; ----------------------------------;
MOV &ClusterL,&DIRClusterL ;
MOV &ClusterH,&DIRclusterH ;
- MOV #0,0(PSP) ; -- open_type ptr open_type = 0
+ MOV #0,0(PSP) ; -- open_type ptr set open_type = 0 = DIR
JMP OPN_Dir
; ----------------------------------;
-OPN_FileFound ; -- open_type ptr
+OPN_FileFound ; -- open_type ptr PathName_PTR is set on name of file
; ----------------------------------;
- MOV @PSP,W ;
+ MOV @PSP,W ;
CALL #GetFreeHandle ;STWXY init handle(HDLL_DIRsect,HDLW_DIRofst,HDLL_FirstClus = HDLL_CurClust,HDLL_CurSize)
; ----------------------------------; output : T = CurrentHdl*, S = ReturnError, Y = DIRentry offset
-OPN_NomoreHandle ; S = error 16
-OPN_alreadyOpen ; S = error 8
-OPN_EndOfDIR ; S = error 4
OPN_NoSuchFile ; S = error 2
-OPN_NoPathName ; S = error 1
-OPN_Dir
+OPN_Dir ;
MOV #xdodoes,rDODOES ; restore rDODOES
MOV #xdocon,rDOCON ; restore rDODOES
MOV @PSP+,W ; -- ptr W = open_type
MOV @PSP+,TOS ; --
; ----------------------------------; then go to selected OpenType subroutine (OpenType = W register)
+ CMP #0,W ;
+ JNZ OPEN_QLOAD ;
+ MOV @IP+,PC ; nothing else to do
+; ----------------------------------;
; ======================================================================
; from open(GetFreeHandle): Y = DIRentry, T = CurrentHdl
; output: nothing else abort on error
; ======================================================================
-
-; ----------------------------------;
-OPEN_QDIR ;
-; ----------------------------------;
- CMP #0,W ;
- JZ OPEN_LOAD_END ; nothing to do
+
; ----------------------------------;
OPEN_QLOAD ;
; ----------------------------------;
.IFDEF SD_CARD_READ_WRITE ;
CMP.B #-1,W ; open_type = LOAD"
- JNZ OPEN_QREAD ; next step
+ JNZ OPEN_1W ; next step
.ENDIF ;
; ----------------------------------; here W is free
-OPEN_LOAD ;
+;OPEN_LOAD ;
; ----------------------------------;
CMP #0,S ; open file happy end ?
JNZ OPEN_Error ; no
-OPEN_LOAD_END
- mNEXT ;
+ MOV #NOECHO,PC ; return to QUIT5 then SD_ACCEPT
+; MOV @IP+,PC ;
; ----------------------------------;
; ----------------------------------;
; ----------------------------------;
; Error 1 : PathNameNotFound ; S = error 1
; Error 2 : NoSuchFile ; S = error 2
-; Error 4 : DIRisFull ; S = error 4
-; Error 8 : alreadyOpen ; S = error 8
-; Error 16 : NomoreHandle ; S = error 16
+; Error 4 : alreadyOpen ; S = error 4
+; Error 8 : NomoreHandle ; S = error 8
; ----------------------------------;
- mDOCOL ; set ECHO, type Pathname, type #error, type "< OpenError"; no return
- .word XSQUOTE ;
- .byte 11,"< OpenError" ;
-SD_ERROR
- .word ECHO ;
- .word HERE,COUNT,TYPE,SPACE ;
- .word BRAN,SD_QABORTYES ; to insert S error as flag, no return
+ MOV #SD_CARD_FILE_ERROR,PC ;
; ----------------------------------;
+; to enable bootstrap: BOOT
+; to disable bootstrap: NOBOOT
+; XBOOT [SYSRSTIV|USERSTIV] --
+; here we are after INIT_FORTH
+; performs bootstrap from SD_CARD\BOOT.4th file, ready to test SYSRSTIV|USERSYS value
+XBOOT CALL &HARD_APP ; WARM first calls HARD_APP (which includes INIT_HARD_SD)
+ MOV #PSTACK-2,PSP ; preserve SYSRSTIV|USERSYS in TOS for BOOT.4TH tests
+ MOV #0,0(PSP) ; set TOS = 0 for the next of XBOOT
+ mASM2FORTH ;
+ .word XSQUOTE ; -- SYSRSTIV|USERSYS addr u
+ .byte 15,"LOAD\34 BOOT.4TH\34" ; LOAD" BOOT.4TH" issues error 2 if no such file...
+ .word BRAN,QUIT4 ; to interpret this string, then loop back to QUIT1/QUIT2
+; ----------------------------------;
+; ==================================;
+ FORTHWORD "BOOT" ; to enable BOOT
+; ==================================;
+ MOV #XBOOT,&PUCNEXT ; inserts XBOOT in PUC chain.
+ MOV @IP+,PC
-
-
-
+; ==================================;
+ FORTHWORD "NOBOOT" ; to disable BOOT
+; ==================================;
+NOBOOT MOV #WARM,&PUCNEXT ; removes XBOOT from PUC chain.
+ MOV @IP+,PC ;
OSDN Git Service
