mirror of https://github.com/A2osX/A2osX.git
433 lines
7.8 KiB
Plaintext
433 lines
7.8 KiB
Plaintext
NEW
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AUTO 3,1
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*--------------------------------------
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devid .EQ $12
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src .EQ $12
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dst .EQ $14
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*--------------------------------------
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ILDR.DBuf .EQ $0C00
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ILDR.IOBuf .EQ $1400
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*--------------------------------------
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ILDR.START .PH ILDR
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ILDR.START1 jsr MLI check for file 'atinit'
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.DA #MLI.GFINFO
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.DA ILDR.GFINFO
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bcs ILDR.ENUMPM
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lda ILDR.GFINFO+S.FI.T
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cmp #$E2 is 'atinit' correct file type?
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bne ILDR.ENUMPM error - wrong file type
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ldy #ILDR.ATINIT
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lda /ILDR.ATINIT
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jsr ILDR.LoadFile
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bcc .1
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.9 jmp ILDR.MLIERR
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.1 lda IO.RROMBNK2 enable ROM
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jsr $2000 execute ATinit
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*--------------------------------------
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* BOOT block read 4 directory blocks at dbuf=$C00 -> $13FF
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*--------------------------------------
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ILDR.ENUMPM .DO READCAT=1
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lda LDR.MLIOL.P+1 Boot ZP.UNITNUM
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sta ILDR.MLIRB.P+1
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stz dst
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lda /ILDR.DBuf
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ldy #$02 read directory into buffer
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ldx #0
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.22 sta dst+1
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sta ILDR.MLIRB.P+3 Data buf HI
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sty ILDR.MLIRB.P+4 Blk Num LO
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stx ILDR.MLIRB.P+5 Blk Num HI
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jsr MLI
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.DA #MLI.READBLOCK
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.DA ILDR.MLIRB.P
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bcc .23
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jmp ILDR.MLIERR
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.23 ldy #$03 get next block# from link
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lda (dst),y
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tax
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dey
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ora (dst),y 00 00 -> Last Block
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beq .28
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lda (dst),y
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tay
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lda dst+1
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inc
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inc add $200 to buffer pointer
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cmp /ILDR.DBuf+$800 until it points past end of buffer.
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bcc .22 if ok, read next block.
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.28 .FIN
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*--------------------------------------
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.DO M.PM=1
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jsr ILDR.EnumInit
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.1 ldx #S.FI.T.BIN
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ldy #ILDR.PMPFX
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lda /ILDR.PMPFX
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clc prefix
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jsr ILDR.EnumNext
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bcs .8
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jsr ILDR.LoadFilePBuf
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bcs ILDR.MLIERR
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ldx #3
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.2 lda idxl,x
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pha
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dex
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bpl .2
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jsr $2000
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bit IO.RROMBNK2 enable ROM
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ldx #0
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.3 pla
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sta idxl,x
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inx
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cpx #4
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bne .3
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>DEBUGOA
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bra .1
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.8 .FIN
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*--------------------------------------
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jsr ILDR.EnumInit
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ldx #S.FI.T.SYS
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ldy #ILDR.SYSTEMSFX
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lda /ILDR.SYSTEMSFX
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sec suffix
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jsr ILDR.EnumNext
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bcs .9
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jsr ILDR.LoadFilePBuf
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bcs ILDR.MLIERR
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bit IO.RROMBNK2 enable ROM
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bit IO.RDIOUDIS
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sta IO.SETIOUDIS
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sta IO.CLRDHIRES
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bmi .5
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sta IO.CLRIOUDIS
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.5 sta IO.CLR80DISP
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sta IO.CLR80STORE
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sta IO.SETTEXT
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sta IO.CLRMIXED
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jsr ROM.INIT
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jsr ROM.SETVID
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jsr ROM.SETKBD
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jsr ROM.HOME
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jmp $2000 go run interpreter
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.9 jsr MLI no .SYSTEM found, so quit.
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.DA #MLI.QUIT
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.DA ILDR.QUIT
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*--------------------------------------
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ILDR.MLIERR cmp #MLI.E.BADBUF
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bne .1
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ldx #ILDR.MSG.SYSTOOLARG-ILDR.MSG
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.HS 2C BIT ABS
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.1 ldx #ILDR.MSG.SYSLOADERR-ILDR.MSG
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bit IO.RROMBNK2
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jsr ROM.SETINV
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.2 lda ILDR.MSG,x
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pha
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ora #$80
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jsr ROM.COUT
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inx
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pla
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bpl .2
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lda #$A0
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jsr ROM.COUT
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ldy #0
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.3 iny
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lda LDR.PBuf,y
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jsr ROM.COUT
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cpy LDR.PBuf
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bne .3
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bra *
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*--------------------------------------
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ILDR.EnumInit lda /ILDR.DBuf search directory buffer
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sta idxl+1
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lda #ILDR.DBuf+4 skip Prev/next Block Ptr
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sta idxl
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lda ILDR.DBuf+35 EL
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sta ILDR.EL
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lda ILDR.DBuf+36 EPB
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sta ILDR.EPB
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sta ILDR.EITB
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lda ILDR.DBuf+37 FCLO
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eor #$ff
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sta ILDR.nFC
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lda ILDR.DBuf+38 FCHI
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eor #$ff
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sta ILDR.nFC+1
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ILDR.EnumInit.RTS
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rts
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*--------------------------------------
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* X = expected FileType
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* Y,A = expected prefix/suffix
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*--------------------------------------
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ILDR.EnumNext stx ILDR.FT
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sty src
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sta src+1
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ror ILDR.bPFXSFX
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.1 inc ILDR.nFC
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bne .2
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inc ILDR.nFC+1
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sec
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beq ILDR.EnumInit.RTS
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.2 dec ILDR.EITB
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beq .3
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lda idxl
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clc
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adc ILDR.EL
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sta idxl
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bcc .4 same page
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inc idxl+1 512b block, 2nd page
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bra .4
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.3 inc idxl+1
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lda idxl+1
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cmp #$14 last block read at $0C00-$13FF
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bcs ILDR.EnumInit.RTS
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lda #4
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sta idxl
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lda ILDR.EPB
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sta ILDR.EITB
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.4 lda (idxl)
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beq .2 deleted / empty
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bmi .1 $D, $E, or $F...
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and #$0F
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sta LDR.PBuf filename Len
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tay
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.5 lda (idxl),y
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sta LDR.PBuf,y
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dey
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bne .5
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ldy #16
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lda (idxl),y
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cmp ILDR.FT expected file type
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bne .1
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lda (src) expected prefix/suffix len
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cmp LDR.PBuf
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bcs .1 filename LE prefix/suffix
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bit ILDR.bPFXSFX
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bpl .12 go check prefix
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tay
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ldx LDR.PBuf
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.11 lda LDR.PBuf,x
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eor (src),y
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asl
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bne .1
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dex
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dey
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bne .11
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bra .15
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.12 lda (src) expected prefix/suffix len
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tay
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.13 lda LDR.PBuf,y
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eor (src),y
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asl
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bne .1
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dey
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bne .13
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.15 ldy #$1D MIN_VERSION
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lda (idxl),y
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bpl .10 no lowercase information
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ldx LDR.PBuf
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.6 cpx #8 CS if MIN_VERSION to use
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bcs .7
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ldy #$1D MIN_VERSION
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lda (idxl),y
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and ILDR.LCBits,x
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bne .8
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bra .9
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.7 ldy #$1C VERSION
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lda (idxl),y
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and ILDR.LCBits-8,x
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beq .9
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.8 lda LDR.PBuf,x
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eor #$20 to lowercase
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sta LDR.PBuf,x
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.9 dex
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bne .6
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.10 clc
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rts
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*--------------------------------------
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ILDR.LoadFilePBuf
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ldy #LDR.PBuf
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lda /LDR.PBuf
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ILDR.LoadFile sty ILDR.OPEN+1 Filename
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sta ILDR.OPEN+2
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jsr MLI
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.DA #MLI.OPEN
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.DA ILDR.OPEN
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bcs .9
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jsr MLI
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.DA #MLI.GETEOF
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.DA ILDR.GETEOF
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bcs .9
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lda ILDR.GETEOF+4
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bne .99
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lda ILDR.GETEOF+3
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cmp #$9F
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bcc .1
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bne .99 more than $9Fxx
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lda ILDR.GETEOF+2
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bne .99 more than $9F00
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.1
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jsr MLI
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.DA #MLI.READ
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.DA ILDR.READ
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bcs .9
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jsr MLI
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.DA #MLI.CLOSE
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.DA ILDR.CLOSE
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.9 rts
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.99 lda #MLI.E.BADBUF
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sec
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rts
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*--------------------------------------
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ILDR.MSG .EQ *
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ILDR.MSG.SYSLOADERR .AT "Unable to load"
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ILDR.MSG.SYSTOOLARG .AT "Too Large"
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ILDR.LCBits .HS 8040201008040201
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*--------------------------------------
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ILDR.GFINFO .DA #10 PARAM CNT
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.DA ILDR.ATINIT
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.BS S.FI-3
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*--------------------------------------
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.DO READCAT=1
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ILDR.MLIRB.P .DA #3
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.DA #0 unit number
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.DA 0 2 byte data buffer
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.DA 0 2 byte block number
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.FIN
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*--------------------------------------
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ILDR.OPEN .DA #3 PARAM CNT
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.BS 2 Filename
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.DA ILDR.IOBuf
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.HS 01 REF
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*--------------------------------------
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ILDR.GETEOF .DA #2 PARAM CNT
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.DA #01 REF
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.HS 000000
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*--------------------------------------
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ILDR.READ .DA #4 PARAM CNT
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.HS 01 REF
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.DA $2000
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.DA $9F00 Max file size
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.HS 0000
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*--------------------------------------
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ILDR.CLOSE .DA #1 PARAM CNT
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.HS 01 REF
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*--------------------------------------
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ILDR.QUIT .DA #4 PARAM CNT
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.HS 00
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.HS 0000
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.HS 00
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.HS 0000
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*--------------------------------------
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ILDR.ATINIT .PS "ATINIT"
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.DO M.PM=1
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ILDR.PMPFX .PS "PM."
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.FIN
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ILDR.SYSTEMSFX .PS ".SYSTEM"
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*--------------------------------------
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.DUMMY
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ILDR.EPB .BS 1
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ILDR.EL .BS 1
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ILDR.nFC .BS 2
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ILDR.FT .BS 1
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ILDR.EITB .BS 1
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ILDR.bPFXSFX .BS 1
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.ED
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*--------------------------------------
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.EP
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*--------------------------------------
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ILDR.LEN .EQ *-ILDR.START
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*--------------------------------------
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MAN
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SAVE usr/src/prodos.fx/prodos.s.ildr
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LOAD usr/src/prodos.fx/pdos8m.s
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ASM
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