NEW PREFIX /A2OSX.BUILD AUTO 4,1 */-------------------------------------- * # FPutC.AY * Print A (char) to Node * ## In: * A : char to print * Y = hFILE * ## Out: * CC = success *\-------------------------------------- K.FPutC.AY sta K.PutC.Char sty K.PutC.Node tya phy bne K.PutChar.A.1 K.PutChar.A.8 ply clc rts */-------------------------------------- * # PutChar.A * Print A (char) to StdOut * ## In: * A : char to print * ## Out: * CC = success *\-------------------------------------- K.PutChar.A sta K.PutC.Char phy ldy #S.PS.hStdOut lda (pPs),y beq K.PutChar.A.8 NUL phx K.PutChar.A.1 sta K.PutC.Node jsr K.GetMemPtr.A >STYA pDev ldy #S.NODE.T lda (pDev),y asl tax jsr K.PutChar.A.Jmp plx ply rts *-------------------------------------- K.PutChar.A.Jmp jmp (.1,x) .1 .DA K.PutChar.A.REG .DA STDIO.IOERR DIR .DA K.PutChar.A.CDEV .DA STDIO.IOERR BDEV .DA STDIO.IOERR LNK .DA STDIO.IOERR DSOCK .DA K.PutChar.A.SSOCK .DA K.PutChar.A.FIFO *-------------------------------------- K.PutChar.A.REG lda K.PutC.Node ldy K.PutC.Char jmp K.FWrite.AY *-------------------------------------- K.PutChar.A.CDEV ldy #S.NODE.DEV.JMP lda (pDev),y sta .1+1 iny lda (pDev),y sta .1+2 lda K.PutC.Char ldx #DEVMGR.WRITE .1 jmp $ffff *-------------------------------------- K.PutChar.A.SSOCK lda (pDev) #S.NODE.HANDLER jsr K.GetMemPtr.A >STYA .1 ldy #S.NODE.SSOCK.HSKT >PUSHB (pDev),y >PUSHB K.PutC.Char ldy #S.NODE.SSOCK.WRITE lda (pDev),y tax Function Offset for write .1 jmp $ffff *-------------------------------------- K.PutChar.A.FIFO ldy #S.NODE.FIFO.S lda (pDev),y beq .9 Remote PS did not opened yet the pipe cmp #S.NODE.FIFO.S.Closed beq .99 Remote PS closed the Pipe ldy #S.NODE.FIFO.hMem lda (pDev),y jsr K.GetMemPtr.A >STYA .1+2 ldy #S.NODE.FIFO.Head lda (pDev),y inc dey #S.NODE.FIFO.Tail cmp (pDev),y beq .9 FIFO is full iny sta (pDev),y tay lda K.PutC.Char .1 sta $ffff,y clc rts .9 lda #MLI.E.VOLFULL .HS 2C bit abs .99 lda #MLI.E.EOF sec rts *-------------------------------------- K.PutC.Char .BS 1 K.PutC.Node .BS 1 */-------------------------------------- * # GetChar * Get char from StdIn * ## In: * none. * ## Out: * CC = success * A = char *\-------------------------------------- K.GetChar ldy #S.PS.hStdIn lda (pPs),y */-------------------------------------- * # GetC.A * Get char from Node * ## In: * A = hFILE * ## Out: * CC = success * A = char *\-------------------------------------- K.GetC.A sta K.PutC.Node jsr K.GetMemPtr.A >STYA pDev ldy #S.NODE.T lda (pDev),y asl tax jmp (.1,x) .1 .DA K.GetC.REG .DA STDIO.IOERR DIR .DA K.GetC.CDEV .DA STDIO.IOERR BDEV .DA STDIO.IOERR LNK .DA STDIO.IOERR DSOCK .DA K.GetC.SSOCK .DA K.GetC.FIFO *-------------------------------------- K.GetC.REG lda K.PutC.Node jmp K.FRead.A *-------------------------------------- K.GetC.CDEV ldx #DEVMGR.READ ldy #S.NODE.DEV.JMP lda (pDev),y sta .1+1 iny lda (pDev),y sta .1+2 .1 jmp $ffff *-------------------------------------- K.GetC.SSOCK lda (pDev) #S.NODE.HANDLER jsr K.GetMemPtr.A >STYA .1 ldy #S.NODE.SSOCK.READ lda (pDev),y tax Function Offset for READ ldy #S.NODE.SSOCK.HSKT lda (pDev),y .1 jmp $ffff *-------------------------------------- K.GetC.FIFO */-------------------------------------- * # FPutS * Write String to FILE * ## In: * PUSHW : CPtr * PUSHB : hFILE * ## Out: * CC = success *\-------------------------------------- K.FPutS */-------------------------------------- * # PutS.YA * Write String to StdOut * ## In: * Y,A : CPtr * ## Out: * CC = success *\-------------------------------------- K.PutS.YA bra * */-------------------------------------- * # FOpen * Open a file * ## In : * PUSHW = AUXTYPE * PUSHB = TYPE * PUSHB = MODE * SYS.FOpen.R : if R and !exists -> ERROR * SYS.FOpen.W : if W and !exists -> CREATE * SYS.FOpen.A : Append * SYS.FOpen.T : Open/Append in Text mode * SYS.FOpen.X : Create if not exists * PUSHW = PATH (PSTR) * ## Out : * CC : A = hFILE * CS : A = EC *\-------------------------------------- K.FOpen jsr PFT.CheckPathSTK jsr STDIO.PullMLIPath >PULLB K.FOpen.MODE >PULLB K.FOpen.TYPE >PULLW K.FOpen.AUXTYPE >MLICALL MLIGETFILEINFO bcc K.FOpen.10 Already Exists bit K.FOpen.MODE Create if not exists ? bpl K.FOpen.9 No, return MLI error lda #S.FI.A.FULL Yes, Create... sta K.MLI.PARAMS+3 Access lda K.FOpen.TYPE sta K.MLI.PARAMS+4 File type >LDYA K.FOpen.AUXTYPE >STYA K.MLI.PARAMS+5 Aux type lda #S.FI.ST.STD sta K.MLI.PARAMS+7 ldx #3 .1 lda DATELO,x sta K.MLI.PARAMS+8,x dex bpl .1 >MLICALL MLICREATE bcc K.FOpen.10 K.FOpen.9 rts K.FOpen.10 >LDYAI S.NODE.REG jsr K.GetMem0.YA bcs K.FOpen.9 >STYA ZPPtr1 stx .8+1 jsr STDIO.SetIOBUF bcs .98 >MLICALL MLIOPEN bcs .98 lda K.MLI.PARAMS+5 get ref_num ldy #S.NODE.REG.REF sta (ZPPtr1),y sta K.MLI.PARAMS+1 Next MLI Calls are REF_NUM based lda K.FOpen.MODE bit #SYS.FOpen.W beq .20 Write mode ? and #SYS.FOpen.A Append ? bne .11 yes, go to end of file stz K.MLI.PARAMS+2 stz K.MLI.PARAMS+3 stz K.MLI.PARAMS+4 >MLICALL MLISETEOF no, reset size to 0 bcs .98 bra .20 .11 >MLICALL MLIGETEOF bcs .98 >MLICALL MLISETMARK bcs .98 .20 lda K.FOpen.MODE and #SYS.FOpen.T Text Mode ? beq .30 lda #$FF sta K.MLI.PARAMS+2 lda #$0D sta K.MLI.PARAMS+3 >MLICALL MLINEWLINE .30 ldy #S.NODE.T lda #S.NODE.T.REG sta (ZPPtr1),y .8 lda #$ff Self Modified clc rts CC .98 pha save MLI error lda .8+1 jsr K.FClose.A.1 pla get back MLI error sec rts *-------------------------------------- K.FOpen.MODE .BS 1 K.FOpen.TYPE .BS 1 K.FOpen.AUXTYPE .BS 2 */-------------------------------------- * # FClose.A * Close a file * ## In : * A = hFILE * ## Out : *\-------------------------------------- K.FClose.A jsr PFT.CheckNodeA pha jsr K.GetMemPtr.A >STYA ZPPtr1 pla K.FClose.A.1 sta K.FClose.A.2+1 ldy #S.NODE.REG.REF lda (ZPPtr1),y beq .1 sta K.MLI.PARAMS+1 >MLICALL MLICLOSE .1 ldy #S.NODE.REG.IOBUF lda (ZPPtr1),y beq K.FClose.A.2 jsr K.FreeMem.A K.FClose.A.2 lda #$ff Self Modified jmp K.FreeMem.A */-------------------------------------- * # FRead.A * Read ONE byte (A) from file (Y) * ## In : * A = hFILE * ## Out : * A = Byte Read *\-------------------------------------- K.FRead.A jsr PFT.CheckNodeA ldx #MLIREAD bra K.FReadWrite.0 */-------------------------------------- * # FWrite.AY * Write ONE byte (A) To file (Y) * ## In: * A = hFILE * Y = char * # Out: * Y,A = Bytes Written *\-------------------------------------- K.FWrite.AY jsr PFT.CheckNodeA sty K.FWrite.AY.Buf ldx #MLIWRITE K.FReadWrite.0 jsr STDIO.GetRefNum >LDYAI K.FWrite.AY.Buf >STYA K.MLI.PARAMS+2 lda #1 sta K.MLI.PARAMS+4 stz K.MLI.PARAMS+5 lda #4 Param Count = 4 for MLIREAD & MLIWRITE jsr GP.MLICall bcs .9 lda K.FWrite.AY.Buf .9 rts K.FWrite.AY.Buf .BS 1 */-------------------------------------- * # FRead * Read bytes from file * ## In : * PUSHW = Dest Ptr * PUSHW = Bytes To Read * PUSHB = hFILE * ## Out : * Y,A = Bytes Read *\-------------------------------------- K.FRead jsr PFT.CheckNodeSTK ldx #MLIREAD bra K.FReadWrite.1 */-------------------------------------- * # FWrite * Write bytes to file * ## In: * PUSHW = Src Ptr * PUSHW = Bytes To Write * PUSHB = hFILE * # Out: * Y,A = Bytes Written *\-------------------------------------- K.FWrite jsr PFT.CheckNodeSTK ldx #MLIWRITE K.FReadWrite.1 >PULLA jsr STDIO.GetRefNum >PULLW K.MLI.PARAMS+4 >PULLW K.MLI.PARAMS+2 lda #4 Param Count = 4 for MLIREAD & MLIWRITE jsr GP.MLICall bcs .9 >LDYA K.MLI.PARAMS+6 .9 rts */-------------------------------------- * # FFlush.A * ## In: * A = hFILE *\-------------------------------------- K.FFlush.A jsr PFT.CheckNodeA jsr STDIO.GetRefNum >MLICALL MLIFLUSH rts */------------------------------------- * # FSeek * Set the file-position indicator for hFILE * ## In: * PUSHW = Ptr to Offset (DWORD) * PUSHB = From * PUSHB = hFILE *\------------------------------------- K.FSeek jsr PFT.CheckNodeSTK >PULLA jsr STDIO.GetRefNum >PULLA FROM tax >PULLW ZPPtr1 cpx #SYS.FSeek.END+1 bcs .98 txa asl tax jmp (.1,x) .1 .DA .10 .DA .20 .DA .30 * K.FSeek.SET .10 stz K.MLI.PARAMS+2 stz K.MLI.PARAMS+3 stz K.MLI.PARAMS+4 bra .8 * K.FSeek.CUR .20 >MLICALL MLIGETMARK bcc .8 rts * K.FSeek.END .30 >MLICALL MLIGETEOF bcs .9 .8 ldy #0 ldx #3 3 bytes, 24 bits!!! clc .81 lda K.MLI.PARAMS+2,y adc (ZPPtr1),y sta K.MLI.PARAMS+2,y iny dex bne .81 bcs .99 Offset out of range! .82 >MLICALL MLISETMARK bcc .9 cmp #MLI.E.BEYEOF bne .9 >MLICALL MLISETEOF bcc .82 .9 rts .98 lda #K.E.SYN .HS 2C bit abs .99 lda #K.E.FTB sec rts */-------------------------------------- * # FEOF.A * Test the end-of-file indicator for hFILE * ## In: * A = hFILE * ## Out: * CC : * A=0 EOF * A !=0 NOT EOF * CS : *\-------------------------------------- K.FEOF.A jsr PFT.CheckNodeA jsr STDIO.GetRefNum >MLICALL MLIGETMARK bcs .9 ldy #2 .1 lda K.MLI.PARAMS+2,y sta K.FEOF.A.MARK,y dey bpl .1 >MLICALL MLIGETEOF bcs .9 ldy #2 .2 lda K.MLI.PARAMS+2,y eor K.FEOF.A.MARK,y bne .8 dey bpl .2 .8 clc .9 rts K.FEOF.A.MARK .BS 3 */-------------------------------------- * # FTell * Return the current value of the file-position indicator * ## In: * PUSHW = Ptr to Offset (DWORD) * PUSHB = hFILE * ## Out: * Offset = Offset *\-------------------------------------- K.FTell jsr PFT.CheckNodeSTK >PULLA jsr STDIO.GetRefNum >PULLW ZPPtr1 >MLICALL MLIGETMARK bcs .9 ldy #3 lda #0 sta (ZPPtr1),y dey .1 lda K.MLI.PARAMS+2,y sta (ZPPtr1),y dey bpl .1 .9 rts */-------------------------------------- * # Remove.YA *\-------------------------------------- K.Remove.YA jsr PFT.CheckPathYA jsr STDIO.SetMLIPathYA >MLICALL MLIDESTROY rts */-------------------------------------- * # Rename * Rename a file * ## In : * PUSHW = New Name * PUSHW = Old Name * ## Out : *\-------------------------------------- K.Rename jsr PFT.CheckPathSTK jsr STDIO.PullMLIPath >PULLW .1+1 ldy #0 .1 lda $ffff,y Self Modified beq .8 iny sta K.Buf256,y cpy #MLI.MAXPATH bne .1 .8 sty K.Buf256 >LDYAI K.Buf256 >STYA K.MLI.PARAMS+3 >MLICALL MLIRENAME rts */-------------------------------------- * # SScanF * Scan a C-String (in progress) * ## In: * PUSHW PTR to target buffer * PUSHW PSTR pattern (ex: "%d.%d.%d.%d") * %d : byte * PUSHW PSTR to scan (ex: "192.168.1.5") * ## Out: *\-------------------------------------- K.SScanF jsr PullP1P2P3 ldy #0 Y = PTR in pattern lda (ZPPtr1) beq .9 tax X = COUNT to scan inc ZPPtr1 bne .1 inc ZPPtr1+1 .1 txa End Of String? beq .8 tya cmp (ZPPtr2) End of pattern? beq .8 iny lda (ZPPtr2),y cmp #'%' Escape? beq .2 cmp (ZPPtr1) Same char? bne .9 jsr K.SScanF.IncPtr1 bne .1 clc rts .2 tya cmp (ZPPtr2) unexpected End of pattern after "%" ? beq .9 iny lda (ZPPtr2),y cmp #'d' BYTE ? bne .3 * stz ASCBUF .20 lda (ZPPtr1) jsr STDIO.IsDigit bcs .21 phx * inc ASCBUF * ldx ASCBUF * sta ASCBUF,x plx jsr K.SScanF.IncPtr1 bne .20 end of string ? .21 * jsr DEC2HEX AToF MIGRATION bra * lda HEXBUF sta (ZPPtr3) inc ZPPtr3 bne .1 inc ZPPtr3+1 bra .1 .3 cmp #'D' WORD ? bne .4 bra .1 .4 cmp #'s' STRING ? bne .9 bra .1 .8 clc rts .9 sec rts *-------------------------------------- K.SScanF.IncPtr1 dex beq .1 inc ZPPtr1 bne .1 inc ZPPtr1+1 never Zero .1 rts */-------------------------------------- * # PrintF.YA/SPrintF.YA/FPrintF.YA * Prints C-Style String * ## In: * PrintF.YA : * Y,A = PTR to CStr * SPrintF.YA : * Y,A = PTR to CStr * PULLW = Ptr to Dst Buffer * FPrintF.YA : * Y,A = PTR to CStr * PULLB = hNode * ## Out: * CC : success * CS : error code from Output * Specifiers : * %b : pull 1 byte to Print BIN * %B : pull 2 bytes to Print BIN * %d : pull 1 byte unsigned DEC 0..255 * %D : pull 2 bytes unsigned DEC 0..65535 * %u : pull 2 bytes PTR to 4 bytes long unsigned DEC 0..4294967295 * %e : pull 2 bytes PTR to 5 Bytes float (-)1.23456789e+12 * %f : pull 2 bytes PTR to 5 Bytes float (-)3.1415 * %h : pull 1 byte to Print HEX * %H : pull 2 bytes to Print HEX * %i : pull 1 byte to Print signed DEC -128..127 * %I : pull 2 bytes to Print signed DEC -32768..32767 * %L : pull 2 bytes PTR to 4 bytes signed DEC -2147483648..2147483647 * %n : pull 1 byte to Print low Nibble HEX * %N : pull 1 byte to Print high Nibble HEX * %s : pull 2 bytes ptr to C-Style String * %S : pull 2 bytes ptr to P-Style String * \b : Print 'BS' (08) * \e : Print 'ESC' ($1B,27) * \f : Print 'FF' ($0C,12) * \n : Print 'LF' ($0A,10) * \r : Print 'CR' ($0D,13) * \\\\ : Print \ * \% : Print % * Modifiers for len and padding : * %d : '9' '12' * %2d : ' 9' '12' * %02d : '09' '12' * %11s : 'ABCDEFGH ' * %011s : 'ABCDEFGH000' * %2f : '3.14' *\-------------------------------------- K.SPrintF.YA * >STYA ZPPtr1 * >PULLW Printf.Cout.Ptr+1 K.FPrintF.YA * >STYA ZPPtr1 K.PrintF.YA >STYA ZPPtr1 ldy #0 .1 lda (ZPPtr1),y beq .99 iny cmp #'%' bne .10 stz PADLEN lda #' ' sta PADCHAR .2 ldx #PrintFTBL2-PrintFTBL1-1 lda (ZPPtr1),y beq .99 iny .3 cmp PrintFTBL1,x do we have a %x command? beq .8 yes, jmp to it! dex bpl .3 no valid letter... cmp #'0' ...a 0...mmm... padding char? bne .4 ldx PADLEN PADLEN is not nul, so this 0 is second digit bne .5 * lda #'0' sta PADCHAR no, this is the first 0, so make it PADCHAR bra .2 .4 jsr STDIO.IsDigit bcs .99 .5 and #$0F we have a digit pha save it... lda PADLEN starts PADLEN * 10 asl asl A=times 4 adc PADLEN CC by ASL, A=times 5 asl times 10 sta PADLEN pla get back digit adc PADLEN sta PADLEN bra .2 go get next char... .8 phy txa asl tax jsr PrintFESC ply bcc .1 rts .10 cmp #'\' bne .20 ldx #PrintFTBL2.OUT-PrintFTBL2-1 lda (ZPPtr1),y beq .99 iny .12 cmp PrintFTBL2,x beq .13 dex bpl .12 bra .1 .13 lda PrintFTBL2.OUT,x .20 jsr Printf.Cout bcc .1 .99 rts *-------------------------------------- PrintFESC jmp (PrintFJMP,x) *-------------------------------------- PrintFTBL1 .AS "bBdDuefhHiILnNsS" PrintFTBL2 .AS "befnr\%" PrintFTBL2.OUT .HS 08.1B.0C.0A.0D \b\e\f\n\r .DA #'\' \\ .DA #'%' \% PrintFJMP .DA PrintF.B,PrintF.BB .DA PrintF.D,PrintF.DD,PrintF.U .DA PrintF.E,PrintF.F .DA PrintF.H,PrintF.HH .DA PrintF.I,PrintF.II,PrintF.L .DA PrintF.N,PrintF.NN .DA PrintF.S,PrintF.SS *-------------------------------------- PrintF.BB >PULLA pha jsr PrintF.B pla bcc PrintF.B.1 PrintF.BB.RTS rts *-------------------------------------- PrintF.B >PULLA PrintF.B.1 ldx #8 .1 asl pha lda #'0' adc #0 add Carry jsr Printf.Cout pla bcs PrintF.BB.RTS dex bne .1 rts *-------------------------------------- PrintF.I sec signed short .HS 90 BCC PrintF.D clc unsigned short (BYTE) ldx #0 one byte >PULLB HEXBUF stz HEXBUF+1 bra PrintF.DD.1 PrintF.II sec signed int .HS 90 BCC PrintF.DD clc unsigned int (WORD) ldx #1 two bytes >PULLW HEXBUF PrintF.DD.1 stz HEXBUF+2 stz HEXBUF+3 bra PrintF.U.1 PrintF.L sec signed long .HS 90 BCC PrintF.U clc unsigned long (DWORD) ldx #3 4 bytes >PULLW ZPPtr2 ldy #3 .1 lda (ZPPtr2),y sta HEXBUF,y dey bpl .1 PrintF.U.1 bcc .8 unsigned, nothing to check lda HEXBUF,x get sign bpl .8 * sec ldy #0 .1 lda HEXBUF,y two's complement of X bytes eor #$ff adc #0 sta HEXBUF,y iny dex bpl .1 sec tell to print a "-" sign.... .8 jmp HEX2DEC *-------------------------------------- * EXP(8) 1(s) 1significants(31) * http://apple2.org.za/gswv/a2zine/GS.WorldView/Resources/GS.TECH.INFO/AppleSoft/ *-------------------------------------- PrintF.E sec Force "E+12" .HS 90 BCC PrintF.F clc >PULLW INDEX >ROMCALL SETFAC ldy #3 In order not to trash A2osX.SaveSM,A2osX.SaveSX >ROMCALL FOUT ldx #0 .2 lda $102,x beq .8 phx jsr Printf.Cout plx inx bne .2 .8 clc .9 rts *-------------------------------------- PrintF.HH >PULLA pha jsr PrintF.H pla bra PrintF.H.1 *-------------------------------------- PrintF.H >PULLA PrintF.H.1 pha jsr PrintF.NN.1 pla bra PrintF.N.1 *-------------------------------------- PrintF.N >PULLA PrintF.N.1 and #$0F bra PrintF.NN.2 PrintF.NN >PULLA PrintF.NN.1 lsr lsr lsr lsr PrintF.NN.2 ora #$30 cmp #$3A bcc .1 adc #6 .1 jmp Printf.Cout *-------------------------------------- PrintF.S ldy #$ff CSTR .HS 2C bit abs PrintF.SS ldy #$00 PSTR >PULLW ZPPtr2 lda (ZPPtr2) if CSTR:last char=0, if PSTR:len=0 beq .8 sty .1+1 .1 lda #$ff Self Modified bne .11 CSTR tya PSTR cmp (ZPPtr2) len check beq .2 .11 iny lda (ZPPtr2),y beq .2 jsr Printf.Cout bcs .9 lda PADLEN beq .1 cpy PADLEN bne .1 clc rts .2 lda PADLEN beq .8 .3 cpy PADLEN beq .8 lda PADCHAR jsr Printf.Cout bcs .9 iny bne .3 .8 clc .9 rts *-------------------------------------- Printf.Cout jmp K.PutChar.A *Printf.Cout.Ptr sta $ffff Self modified *-------------------------------------- STDIO.PullMLIPath >PULLYA STDIO.SetMLIPathYA >STYA .1+1 ldy #0 .1 lda $ffff,y Self Modified beq .8 iny sta K.MLI.PATH,y cpy #MLI.MAXPATH bne .1 .8 sty K.MLI.PATH >LDYAI K.MLI.PATH >STYA K.MLI.PARAMS+1 rts *-------------------------------------- STDIO.SetIOBUF >LDYAI 1024 get a ProDOS IOBUF ldx #S.MEM.F.ALIGN+S.MEM.F.NOMOVE jsr MEM.GetMem.YAX bcs .9 >STYA K.MLI.PARAMS+3 Save Ptr to IOBUF for MLIOPEN call txa ldy #S.NODE.REG.IOBUF sta (ZPPtr1),y .9 rts *-------------------------------------- STDIO.GetRefNum jsr K.GetMemPtr.A >STYA ZPPtr1 ldy #S.NODE.REG.REF lda (ZPPtr1),y sta K.MLI.PARAMS+1 rts *-------------------------------------- STDIO.IOERR lda #MLI.E.IO sec rts *-------------------------------------- STDIO.IsDigit cmp #'0' bcc .1 cmp #'9'+1 rts .1 sec rts *-------------------------------------- STDIO.AT10 *-------------------------------------- PADLEN .BS 1 PADCHAR .BS 1 *-------------------------------------- *EXP .BS 1 HEXBUF .BS 4 bNeg .BS 1 BCDBUF .BS 5 5, enough to handle 10 digits (32bits) *-------------------------------------- * Convert HEXBUF to ASCBUF decimal padded with 0 *-------------------------------------- HEX2DEC ror bNeg ldx #4 .1 stz BCDBUF,x Clear all 5 bytes dex bpl .1 sed switch to BCD mode ldx #32 let's roll 32 bits .2 asl HEXBUF rol HEXBUF+1 rol HEXBUF+2 rol HEXBUF+3 ldy #4 .3 lda BCDBUF,y adc BCDBUF,y sta BCDBUF,y dey bpl .3 dex bne .2 cld *-------------------------------------- bit bNeg a -sign to print before digits ? bpl .9 lda #'-' jsr Printf.Cout .9 lda PADLEN any Len format ? beq .4 no lda #10 sec yes, Print only digits starting at pos 10-padlen sbc PADLEN .4 tax x=0 if no padlen, or x=10-padlen .5 txa X range 0 to 9 lsr CS if lo nibble (1,3,5,7,9) tay lda BCDBUF,y bcs .6 lsr lsr lsr lsr .6 and #$0F ora #$30 cmp #'0' a zero? beq .7 inc PADLEN found a non zero, Print all digits, even if 0, next time ldy #'0' sty PADCHAR bra .8 .7 cpx #9 last digit ? beq .8 Print always ldy PADLEN no pad to fill, do not Print 0 beq .10 lda PADCHAR fill with PADCHAR .8 jsr Printf.Cout bcs .99 .10 inx cpx #10 bne .5 clc .99 rts *-------------------------------------- MAN SAVE /A2OSX.SRC/SYS/KERNEL.S.STDIO LOAD /A2OSX.SRC/SYS/KERNEL.S ASM