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Kernel 0.9.2

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This commit is contained in:
Rémy GIBERT 2018-10-04 17:30:14 +02:00
parent 44ca048591
commit 66f6298626
14 changed files with 334 additions and 307 deletions
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26
.Docs/KERNEL.md
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@ -240,7 +240,7 @@ Change The type of a ProDOS File
# open
## C
`hFD open(const char *pathname, int flags);`
`hFD open(const char *pathname, short int flags);`
## ASM
**In:**
@ -249,7 +249,7 @@ Change The type of a ProDOS File
`>SYSCALL open`
**Out:**
A = hFD
note : if file is created on ProDOS : T=TXT,X=$0000
REG File created on ProDOS : T=TXT,X=$0000
# close
@ -604,20 +604,22 @@ Print A (char) to hFILE
## ASM
**In:**
A : character
Y : stream
`>PUSHB character`
`lda stream`
`>SYSCALL fputc`
**Out:**
CC = success
# PutChar
Print A (char) to StdOut
## C
`int putchar ( int character );`
## ASM
Print A (char) to StdOut
**In:**
A : char to print
`lda caracter`
`>SYSCALL putchar`
**Out:**
CC = success
@ -793,20 +795,20 @@ A = Number of arguments filled.
Open a file
## C
`hFILE fopen ( const char * filename, short int mode, short int ftype, int auxtype );`
`hFILE fopen ( const char * filename, short int flags, short int ftype, int auxtype );`
**In:**
## ASM
`>PUSHWI auxtype`
`>PUSHBI ftype`
`>PUSHBI mode`
`>PUSHBI flags`
+ O.RDONLY : if R and exists -> ERROR
+ O.WRONLY : if W and exists -> CREATE
+ O.TRUNC : Reset Size To 0
+ O.APPEND : Append
+ O.TEXT : Open/Append in Text mode
+ O.CREATE : Create if not exists
TODO: mode="w+,t=TYP,x=AUXTYPE"
TODO: replace flags/ftype/auxtype with mode="w+,t=TYP,x=AUXTYPE"
+ r = O_RDONLY
+ r+ = O_RDWR
+ w = O_WRONLY | O_CREAT | O_TRUNC
@ -833,8 +835,12 @@ int fclose ( hFILE stream );
**Out:**
# FRead
int fread (hFILE stream, void * ptr, int count );
Read bytes from file
## C
int fread (hFILE stream, void * ptr, int count );
## ASM
**In:**
`>PUSHWI count`
`>PUSHW ptr`

BIN
.Floppies/A2OSX.BUILD.po
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BIN
.Floppies/A2OSX.DEV.po
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BIN
.Floppies/A2OSX.SRC.po
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10
INC/A2osX.I.txt
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@ -105,11 +105,11 @@ SEEK.END .EQ $04
*--------------------------------------
* .EQ $00
* .EQ $02
SYS.Stat .EQ $04
SYS.MKDir .EQ $06
SYS.MKNod .EQ $08
SYS.MKFIFO .EQ $0A
SYS.FStat .EQ $0C
SYS.FStat .EQ $04
SYS.Stat .EQ $06
SYS.MKDir .EQ $08
SYS.MKNod .EQ $0A
SYS.MKFIFO .EQ $0C
* .EQ $0E
SYS.OpenDir .EQ $10

12
SYS/KERNEL.S.CTRL.txt
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@ -13,23 +13,33 @@ A2osX.D1.S .EQ A2osX.D2-A2osX.D1
A2osX.D2.S .EQ A2osX.E0-A2osX.D2
A2osX.E0.S .EQ A2osX.E0.E-A2osX.E0
*--------------------------------------
.LIST OFF
.DO A2osX.MAIN.S>$700
.LIST ON
* ERROR:MAIN too big
.LIST OFF
.FIN
.DO A2osX.AUX.S>$C00
.LIST ON
* ERROR:AUX too big
.LIST OFF
.FIN
.DO A2osX.GP.SC>$1E0
.LIST ON
* ERROR:GP too big
.LIST OFF
.FIN
.DO A2osX.D1.S>$1000
.LIST ON
* ERROR:BNK1 too big
.LIST OFF
.FIN
.DO A2osX.D2.S>$1000
.LIST ON
* ERROR:BNK2 too big
.LIST OFF
.FIN
*--------------------------------------
.LIST OFF
MAN
SAVE /A2OSX.SRC/SYS/KERNEL.S.CTRL
LOAD /A2OSX.SRC/SYS/KERNEL.S

6
SYS/KERNEL.S.INIT.txt
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@ -133,7 +133,7 @@ Kernel.Init3 sta SETALTZP
ldy #S.PS.hPREFIX
lda (pPs),y
>SYSCALL GetMemPtr
jsr K.GetMemPtr
>PUSHYA
@ -166,7 +166,7 @@ Kernel.Init3 sta SETALTZP
bcs .9
pla
>SYSCALL FreeMem ...discard...
jsr K.FreeMem ...discard...
>LDYAI MSG.Init3.OK
>SYSCALL puts
@ -914,7 +914,7 @@ TskMgrInit >LDYAI MSG.TSK
>SYSCALL puts
>LDYAI K.ENV.SIZE get a buffer for ENV
>SYSCALL GetMem0 make sure blank!!
jsr K.GetMem0 make sure blank!!
bcs .9
txa

174
SYS/KERNEL.S.IO.txt
View File

@ -4,7 +4,7 @@ AUTO 4,1
*/--------------------------------------
* # open
* ## C
* `hFD open(const char *pathname, int flags);`
* `hFD open(const char *pathname, short int flags);`
* ## ASM
* **In:**
* `>PUSHB flags`
@ -12,32 +12,149 @@ AUTO 4,1
* `>SYSCALL open`
* **Out:**
* A = hFD
* note : if file is created on ProDOS : T=TXT,X=$0000
* REG File created on ProDOS : T=TXT,X=$0000
*\--------------------------------------
K.Open jsr PFT.CheckPathYA check if not /mnt
K.Open.FLAGS .BS 1
K.Open.TYPE .BS 1
K.Open.AUXTYPE .BS 2
*--------------------------------------
K.Open pha
>PULLB K.Open.FLAGS
pla
K.Open.I jsr STDIO.SetMLIPathYA local pathname...
>PULLB K.FOpen.MODE
IO.Open.I jsr STDIO.SetMLIPathYA
lda #S.FI.T.TXT
sta K.Open.TYPE
stz K.Open.AUXTYPE
stz K.Open.AUXTYPE+1
ldx #5 $/DEV/
cpx K.MLI.PATH
bcs K.Open.REG
bcs .2
.1 lda K.MLI.PATH,x
cmp IO.DEVDIR,x
bne K.Open.REG
bne .2
dex
bne .1
*--------------------------------------
K.Open.DEV >LDYAI K.MLI.PATH+6 skip $/DEV/
* CDEV,BDEV,DSOCK,SSOCK,PIPE
*--------------------------------------
.2 >LDYAI K.MLI.PATH+6 skip $/DEV/
jsr K.GetDevByName
bcs .9
bcs IO.OPEN.RTS
>STYA pFD
stx .1+1 DEVID
jsr K.IOCTL.GetPDrv
lda (pFD) #S.FD.T
tax
jmp (.3,x)
.3 .DA STDIO.IOERR REG
.DA STDIO.IOERR DIR
.DA IO.OPEN.CDEV
.DA STDIO.IOERR BDEV
.DA STDIO.IOERR LNK
.DA IO.OPEN.DSOCK
.DA IO.OPEN.SSOCK
.DA IO.OPEN.PIPE
IO.OPEN.9 sec
IO.OPEN.RTS rts
*--------------------------------------
IO.OPEN.REG >MLICALL MLIGETFILEINFO
bcc K.IO.OPEN.REG.E Already Exists
bit K.Open.FLAGS Create if not exists ?
bpl IO.OPEN.9 No, return MLI error
lda #S.FI.A.FULL Yes, Create...
sta K.MLI.PARAMS+3 Access
lda K.Open.TYPE
sta K.MLI.PARAMS+4 File type
>LDYA K.Open.AUXTYPE
>STYA K.MLI.PARAMS+5 Aux type
lda #S.FI.ST.STD
sta K.MLI.PARAMS+7
ldx #3
.1 lda DATELO,x
sta K.MLI.PARAMS+8,x
dex
bpl .1
>MLICALL MLICREATE
bcs IO.OPEN.RTS
K.IO.OPEN.REG.E >LDYAI S.FD.REG
ldx #S.MEM.F.INIT0+S.MEM.F.FD
jsr MEM.GetMem.YAX
bcs IO.OPEN.RTS
>STYA pFD
stx .8+1 save hFD
* ldy #S.FD.T Done by GetMem0
* lda #S.FD.T.REG
* sta (pFD),y
jsr STDIO.SetIOBUF
bcs .9
>MLICALL MLIOPEN
bcs .9
lda K.MLI.PARAMS+5 get ref_num
ldy #S.FD.REG.REF
sta (pFD),y
sta K.MLI.PARAMS+1 Next MLI Calls are REF_NUM based
lda K.Open.FLAGS
bit #O.WRONLY
beq .20 Write mode ?
and #O.APPEND Append ?
bne .11 yes, go to end of file
stz K.MLI.PARAMS+2
stz K.MLI.PARAMS+3
stz K.MLI.PARAMS+4
>MLICALL MLISETEOF no, reset size to 0
bra .21
.11 >MLICALL MLIGETEOF
bcs .9
>MLICALL MLISETMARK
.21 bcs .9
.20 lda K.Open.FLAGS
and #O.TEXT Text Mode ?
beq .8
lda #$FF
sta K.MLI.PARAMS+2
lda #C.CR
sta K.MLI.PARAMS+3
>MLICALL MLINEWLINE
bcs .9
.8 lda #$ff
rts
.9 pha
lda .8+1
pha
jsr IO.Close.I
pla
sec
rts
*--------------------------------------
IO.OPEN.CDEV jsr K.IOCTL.GetPDrv
.1 lda #$ff SELF MODIFIED pass A=DEVID To Driver
ldx #IOCTL.OPEN
@ -48,11 +165,13 @@ K.Open.DEV >LDYAI K.MLI.PATH+6 skip $/DEV/
lda Dev.Table.hFD,x
.9 rts
*--------------------------------------
K.Open.REG lda #S.FI.T.TXT
sta K.FOpen.TYPE
stz K.FOpen.AUXTYPE
stz K.FOpen.AUXTYPE+1
jmp K.FOpen.I
IO.OPEN.DSOCK
*--------------------------------------
IO.OPEN.SSOCK
*--------------------------------------
IO.OPEN.PIPE
clc
rts
*/--------------------------------------
* # close
* ## C
@ -62,30 +181,26 @@ K.Open.REG lda #S.FI.T.TXT
* `lda fd`
* `>SYSCALL close`
*\--------------------------------------
K.Close jsr K.GetMemPtr
bcs .9
K.Close pha save hFD
jsr K.GetMemPtr
>STYA pFD
lda (pFD) #S.FD.T
IO.Close.I lda (pFD) #S.FD.T
tax
pla
jmp (.1,x)
.1 .DA IO.CLOSE.REG
.DA IO.CLOSE.DIR
.DA IO.CLOSE.CDEV
.DA STDIO.IOERR BDEV
.DA IO.CLOSE.BDEV
.DA STDIO.IOERR LNK
.DA IO.CLOSE.DSOCK
.DA IO.CLOSE.SSOCK
.DA IO.CLOSE.PIPE
.9 lda #MLI.E.NODEV
sec
rts
*--------------------------------------
IO.CLOSE.REG
IO.CLOSE.DIR
IO.CLOSE.DIR pha save hFD
ldy #S.FD.REG.REF
lda (pFD),y
beq .1
@ -94,14 +209,15 @@ IO.CLOSE.DIR
.1 ldy #S.FD.REG.IOBUF
lda (pFD),y
beq .8
beq .2
jsr K.FreeMem
.2 pla
jmp K.FreeMem
.8 clc
rts
*--------------------------------------
IO.CLOSE.CDEV
IO.CLOSE.BDEV
*--------------------------------------
IO.CLOSE.DSOCK
IO.CLOSE.SSOCK

2
SYS/KERNEL.S.JMP.txt
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@ -8,11 +8,11 @@ AUTO 4,1
*--------------------------------------
K.SYSCALL.JMP .DA 0 $00
.DA 0
.DA K.FStat
.DA K.Stat
.DA K.MKDir
.DA K.MKNod
.DA K.MKFIFO
.DA K.FStat
.DA 0
.DA K.OpenDir $10

38
SYS/KERNEL.S.STAT.txt
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@ -3,7 +3,7 @@ PREFIX /A2OSX.BUILD
AUTO 4,1
*--------------------------------------
* # FStat
* Return information about a hfile
* Return information about a hFILE
* ## C
* `int fstat(short int hFILE, struct stat *statbuf);`
* ## ASM
@ -14,38 +14,14 @@ AUTO 4,1
* **Out:**
*--------------------------------------
K.FStat jsr PFT.CheckNodeA
jsr STDIO.GetHFile
bcs .9
lda Nod.Table.hPath,x
jsr K.GetMemPtr
bra K.Stat.I
>STYA pFD
lda #S.FD.REG
clc
adc pFD
tay
lda /S.FD.REG
adc pFD+1
jsr K.Stat.I
bcs .9
ldy #S.FD.REG.REF
lda (pFD),y
sta K.MLI.PARAMS+1
>MLICALL MLIGETEOF
bcs .9
ldy #S.STAT.SIZE+3
lda #0
sta (ZPPtr1),y
ldx #2
.1 dey
lda K.MLI.PARAMS+2,x
sta (ZPPtr1),y
dex
bpl .1
.9 rts
.9 >RET 2 discard statbuf
*/--------------------------------------
* # Stat
* Return information about a file

243
SYS/KERNEL.S.STDIO.txt
View File

@ -18,22 +18,25 @@ BCDBUF .EQ ARG
* `int fputc ( hFILE stream , int character );`
* ## ASM
* **In:**
* A : character
* Y : stream
* `>PUSHB character`
* `lda stream`
* `>SYSCALL fputc`
* **Out:**
* CC = success
*\--------------------------------------
K.FPutC sta K.IOBuf
tya
K.FPutC pha
>PULLB K.IOBuf
pla
bra K.PutChar.1
*/--------------------------------------
* # PutChar
* Print A (char) to StdOut
* ## C
* `int putchar ( int character );`
* ## ASM
* Print A (char) to StdOut
* **In:**
* A : char to print
* `lda caracter`
* `>SYSCALL putchar`
* **Out:**
* CC = success
*\--------------------------------------
@ -43,14 +46,13 @@ K.PutChar sta K.IOBuf
lda (pPs),y
K.PutChar.1 jsr STDIO.GetHFile
bcs K.PutS.9
bcs K.PutS.RTS
ldx #1
ldy #1
K.PutChar.Y lda #0
K.PutChar.X >LDYAI K.IOBuf
>STYA K.S.IOCTL+S.IOCTL.BUFPTR
stx K.S.IOCTL+S.IOCTL.BYTECNT
stz K.S.IOCTL+S.IOCTL.BYTECNT+1
>PUSHYA
>PUSHWI K.IOBuf
jmp IO.Write.I
*/--------------------------------------
* # PutS
@ -64,21 +66,22 @@ K.PutChar.X >LDYAI K.IOBuf
* **Out:**
* CC = success
*\--------------------------------------
K.PutS >STYA K.S.IOCTL+S.IOCTL.BUFPTR
>STYA ZPPtr1
K.PutS >PUSHYA
ldy #S.PS.hStdOut
lda (pPs),y
jsr K.FPutS.I
bcs K.PutS.9
jsr K.FPutS
bcs K.PutS.RTS
lda #13
lda #C.CR
sta K.IOBuf
lda #10
lda #C.LF
sta K.IOBuf+1
ldx #2
bra K.PutChar.X
K.PutS.9 rts
ldy #2
bra K.PutChar.Y
K.PutS.RTS rts
*/--------------------------------------
* # FPutS
* Write Str to FILE
@ -92,34 +95,14 @@ K.PutS.9 rts
* **Out:**
* CC = success
*\--------------------------------------
K.FPutS pha
K.FPutS jsr STDIO.GetHFile
bcs K.PutS.RTS
>PULLA
sta K.S.IOCTL+S.IOCTL.BUFPTR
sta ZPPtr1
>PULLA
sta K.S.IOCTL+S.IOCTL.BUFPTR+1
sta ZPPtr1+1
pla
K.FPutS.I jsr STDIO.GetHFile
bcs K.PutS.9
ldy #0
ldx #0
.1 lda (ZPPtr1),y
beq .2
iny
bne .1
inx
inc ZPPtr1+1
bra .1
.2 sty K.S.IOCTL+S.IOCTL.BYTECNT
stx K.S.IOCTL+S.IOCTL.BYTECNT+1
>PULLYA Get String
>STYA ZPPtr2 Save Buffer
>SYSCALL strlen Get String len in Y,A
>PUSHYA push len
>PUSHW ZPPtr2 push buffer
jmp IO.Write.I
*/--------------------------------------
* # PrintF/SPrintF/FPrintF
@ -189,8 +172,8 @@ K.SPrintF >STYA pIOBuf Out Buffer
>PULLW ZPPtr1 format
bra K.PrintF.1
K.FPrintF jsr K.GetMemPtr A = hFILE
>STYA pFD
K.FPrintF jsr STDIO.GetHFile
bcs K.PutS.RTS
>PULLW ZPPtr1 format
bra K.PrintF.0
@ -199,15 +182,14 @@ K.PrintF >STYA ZPPtr1 format
ldy #S.PS.hStdOut
lda (pPs),y
jsr K.GetMemPtr
>STYA pFD
jsr STDIO.GetHFile
bcs K.PutS.RTS
K.PrintF.0 >LDYAI K.IOBuf
>STYA pIOBuf
>STYA K.S.IOCTL+S.IOCTL.BUFPTR
K.PrintF.1 stz K.S.IOCTL+S.IOCTL.BYTECNT
stz K.S.IOCTL+S.IOCTL.BYTECNT+1
K.PrintF.1 stz PrintF.Cnt
stz PrintF.Cnt+1
stz PrintF.GetByte+1
@ -269,7 +251,10 @@ K.PrintF.1 stz K.S.IOCTL+S.IOCTL.BYTECNT
bcc .1
bcs .99
.8 jsr PrintF.Flush
.8 lda pIOBuf+1
eor /K.IOBuf
bne .99
jsr PrintF.Flush
bra .99
.10 cmp #'\'
@ -299,7 +284,11 @@ K.PrintF.1 stz K.S.IOCTL+S.IOCTL.BYTECNT
sta pStack CC
pla
plp
rts
bcs .9
>LDYA PrintF.Cnt
.9 rts
*--------------------------------------
PrintF.ESC jmp (.1,x)
.1 .DA PrintF.B,PrintF.BB
@ -646,9 +635,9 @@ PrintF.GetByte lda #$FF SELF MODIFIED LStack Ptr
*--------------------------------------
PrintF.COut phy
ldy K.S.IOCTL+S.IOCTL.BYTECNT
ldy PrintF.Cnt
sta (pIOBuf),y
inc K.S.IOCTL+S.IOCTL.BYTECNT
inc PrintF.Cnt
bne .8
lda pIOBuf+1
@ -657,25 +646,29 @@ PrintF.COut phy
* we are printing to IObuf, flush!
lda K.S.IOCTL+S.IOCTL.BYTECNT+1
lda PrintF.Cnt+1
pha
lda #1 Flush $100 bytes
sta K.S.IOCTL+S.IOCTL.BYTECNT+1
sta PrintF.Cnt+1
jsr PrintF.Flush
pla
inc
sta K.S.IOCTL+S.IOCTL.BYTECNT+1
sta PrintF.Cnt+1
.7 inc pIOBuf+1
inc K.S.IOCTL+S.IOCTL.BYTECNT+1
inc PrintF.Cnt+1
.8 ply
clc
rts
*--------------------------------------
PrintF.Flush jmp IO.Write.I
PrintF.Flush >PUSHW PrintF.Cnt
>PUSHWI K.IOBuf
jmp IO.Write.I
*--------------------------------------
PrintF.Cnt .BS 2
*/--------------------------------------
* # FGetS
* read bytes from stream into the array
@ -953,19 +946,19 @@ K.SScanF.Fwd tya Y=char count parsed
* # FOpen
* Open a file
* ## C
* `hFILE fopen ( const char * filename, short int mode, short int ftype, int auxtype );`
* `hFILE fopen ( const char * filename, short int flags, short int ftype, int auxtype );`
* **In:**
* ## ASM
* `>PUSHWI auxtype`
* `>PUSHBI ftype`
* `>PUSHBI mode`
* `>PUSHBI flags`
* + O.RDONLY : if R and !exists -> ERROR
* + O.WRONLY : if W and !exists -> CREATE
* + O.TRUNC : Reset Size To 0
* + O.APPEND : Append
* + O.TEXT : Open/Append in Text mode
* + O.CREATE : Create if not exists
* TODO: mode="w+,t=TYP,x=AUXTYPE"
* TODO: replace flags/ftype/auxtype with mode="w+,t=TYP,x=AUXTYPE"
* + r = O_RDONLY
* + r+ = O_RDWR
* + w = O_WRONLY | O_CREAT | O_TRUNC
@ -979,110 +972,34 @@ K.SScanF.Fwd tya Y=char count parsed
* CC : A = hFILE
* CS : A = EC
*\--------------------------------------
K.FOpen.PATH .BS 2
*--------------------------------------
K.FOpen jsr PFT.CheckPathYA
>STYA K.FOpen.PATH
jsr STDIO.SetMLIPathYA
>PULLB K.FOpen.MODE
>PULLB K.FOpen.TYPE
>PULLW K.FOpen.AUXTYPE
pha
>PULLB K.Open.FLAGS
>PULLB K.Open.TYPE
>PULLW K.Open.AUXTYPE
K.FOpen.I >MLICALL MLIGETFILEINFO
bcc K.FOpen.10 Already Exists
pla
jsr IO.Open.I
bcs K.FOpen.RTS
bit K.FOpen.MODE Create if not exists ?
bpl K.FOpen.9 No, return MLI error
sta .1+1 save hFD
tax
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.FD.REG
ldx #S.MEM.F.INIT0+S.MEM.F.FD
jsr MEM.GetMem.YAX
bcs K.FOpen.9
>STYA pFD
stx .8+1
* ldy #S.FD.T Done by GetMem0
* lda #S.FD.T.REG
* sta (pFD),y
jsr STDIO.SetIOBUF
bcs .98
>MLICALL MLIOPEN
bcs .98
lda K.MLI.PARAMS+5 get ref_num
ldy #S.FD.REG.REF
sta (pFD),y
sta K.MLI.PARAMS+1 Next MLI Calls are REF_NUM based
lda K.FOpen.MODE
bit #O.WRONLY
beq .20 Write mode ?
and #O.APPEND 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
bra .21
.11 >MLICALL MLIGETEOF
bcs .98
>MLICALL MLISETMARK
.21 bcs .98
.20 lda K.FOpen.MODE
and #O.TEXT Text Mode ?
beq .22
lda #$FF
sta K.MLI.PARAMS+2
lda #C.CR
sta K.MLI.PARAMS+3
>MLICALL MLINEWLINE
.22 >LDYA K.FOpen.PATH
.8 ldx #$ff Self Modified, hFD
>LDYA K.FOpen.PATH
jsr STDIO.NewHFileYAX
bcc .80
bcc K.FOpen.RTS
.98 pha save MLI error
lda .8+1
pha save MLI error
.1 lda #$ff SELF MODIFIED
jsr K.Close
pla get back MLI error
sec
.80 rts
*--------------------------------------
K.FOpen.PATH .BS 2
K.FOpen.MODE .BS 1
K.FOpen.TYPE .BS 1
K.FOpen.AUXTYPE .BS 2
K.FOpen.RTS rts
*/--------------------------------------
* # FClose
* Close a file
@ -1118,8 +1035,10 @@ K.FClose jsr PFT.CheckNodeA
rts
*/--------------------------------------
* # FRead
* int fread (hFILE stream, void * ptr, int count );
* Read bytes from file
* ## C
* int fread (hFILE stream, void * ptr, int count );
* ## ASM
* **In:**
* `>PUSHWI count`
* `>PUSHW ptr`