2021-07-17 21:02:39 +00:00
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;
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;
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; loader
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;
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2021-07-18 01:24:40 +00:00
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2021-07-17 21:02:39 +00:00
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include 'hfs.aii'
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2021-07-18 01:24:40 +00:00
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include 'macros.aii'
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2021-07-17 21:02:39 +00:00
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string asis
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blanks on
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2021-07-18 01:24:40 +00:00
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__smartport__ set 0
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2021-07-17 21:02:39 +00:00
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buffer equ $3000
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file_not_found equ $46
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dp record 0
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_dp ds.w 1
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ptr ds.1 1
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path ds.l 1
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; readfile
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eof ds.l 1
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2021-07-18 01:24:40 +00:00
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ft ds.w 1
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at ds.w 1
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st ds.w 1
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file_id ds.l 1
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2021-07-17 21:02:39 +00:00
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endr
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header proc
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import readfile, getbootname, getfstname, startup
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entry auxtype
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jmp startup
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nop
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dc.w readfile
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dc.w getbootname
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dc.w getfstname
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dc.w startup-header ; size of permanent code
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auxtype dc.w 0
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endp
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data record
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; store catalog info
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slot ds.w 0
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unit ds.w 0
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vector ds.w 0
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2021-07-18 01:24:40 +00:00
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block_offset ds.w 0
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2021-07-17 21:02:39 +00:00
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cat_extents ds.w 6
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file_extents ds.w 6
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2021-07-18 01:24:40 +00:00
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cat_root dc.w 0
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2021-07-17 21:02:39 +00:00
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system_id dc.l 0
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fsts_id dc.l 0
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driver_id dc.l 0
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2021-07-18 01:24:40 +00:00
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; ctree lookup
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target_parent dc.l 0
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target_str_len dc.w 0
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target_str ds.b 32
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cat_str_len dc.w 0
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cat_str ds.b 32
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2021-07-17 21:02:39 +00:00
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endr
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getbootname proc
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; getbootname(GSString *)
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with dp
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tcd ; save
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pea fakedp
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pld
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plx ; rts
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ply
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sty ptr
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ply
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sty ptr+2
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phx
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pha ; saved d
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phb
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phk
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plb
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; get the volume name from the HFS MDB....
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lda #buffer
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sta pro.buffer
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lda #2
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jsr read_block_abs
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bcs exit
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with HFSMasterDirectoryBlock
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lda buffer+drVN
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and #$ff
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sta [ptr]
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inc a
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lsr a
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tax ; count
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ldy #2
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@loop lda buffer+drVN-1,y
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sta [ptr],y
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iny
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iny
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dex
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bpl @loop
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clc
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lda #0
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exit
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plb
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pld
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rts
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endp
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getfstname proc
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; getfstname(GSString *)
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with dp
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tcd ; save
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pea fakedp
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pld
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plx ; rts
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ply
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sty ptr
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ply
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sty ptr+2
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phx
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pha ; save d
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phb
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phk
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plb
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ldy #10-2 ; 7 + 2 + 1 byte to round up.
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@loop lda name,y
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sta [ptr],y
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dey
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dey
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bpl @loop
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plb
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pld
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clc
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lda #0
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rts
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name dc.w 7
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dc.b 'hfs.fst'
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dc.b 0
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endp
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readfile proc
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; (eof, aux type, file type) readfile(GSString *, void *)
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with dp
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tcd ; save
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pea fakedp
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pld
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plx ; rts
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ply
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sty ptr ; data buffer
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ply
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sty ptr+2
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ply
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sty path ; pathname
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ply
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sty path+2
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phx
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pha ; save d
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phb
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phk
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plb
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lda [path]
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cmp #8
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blt notfound
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; ...
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; stack: b, d, rts,
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lda ft
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sta 3+3,s
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lda at
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sta 5+3,s
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lda eof
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sta 7+3,s
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lda eof+2
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sta 9+3,s
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lda #0
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clc
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exit
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plb
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pld
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rts
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endp
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find_parent proc
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with dp
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; optimism
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stz offset
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lda system_id
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sta parent_id
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lda [path]
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cmp #8
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blt err
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; SYSTEM ?
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ldx #3
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@loop
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lda [path],y
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cmp s1,y
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bne err
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iny
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iny
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dex
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bne @loop
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lda [path],y
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iny
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sty offset
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cmp #'D:'
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beq d
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cmp #'F:'
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beq f
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and #$ff
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cmp #':'
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beq s
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err lda #file_not_found
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sec
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rts
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s
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clc
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rts
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; check for more ':' ?
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d ; check for a driver folder.
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lda [path]
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cmp #16
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blt s
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ldx #4
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@loop lda [path],y
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cmp s2,y
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bne s
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iny
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iny
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dex
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bne @loop
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; match!
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sty offset
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lda driver_id
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sta parent_id
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clc
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rts
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f ; check for FSTs folder
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lda [path]
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cmp #13
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blt s
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ldx #2
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@loop lda [path],y
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cmp s3,y
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bne s
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iny
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iny
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dex
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bne @loop
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lda [path],y
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and #$ff
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cmp #':'
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bne s
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iny
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sty offset
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lda fsts_id
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sta parent_id
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clc
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rts
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s1 dc.b 'xxSYSTEM:'
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s2 dc.b 'xxSYSTEM:DRIVERS:'
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s3 dc.b 'xxSYSTEM:FSTS:'
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2021-07-18 01:24:40 +00:00
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endp
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read_block proc
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entry read_block_abs
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entry vector
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; input
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; a = hfs block #
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; will be adjusted for allocation block offset
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;
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with dp
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clc
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adc data.block_offset
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read_block_abs
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; todo -- need to save/restore dp and stack
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if __smartport__ then
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sta sp.block
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else
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sta pro.block
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endif
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php
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sec
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xce
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dc.b $20 ; jsr
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vector dc.w $ffff
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if __smartport__ then
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dc.b sp.ReadBlock
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dc.w sp
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endif
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bcs @fail
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xce
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plp
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rts
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@fail
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clc
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xce
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plp
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sec
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rts
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endp
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cat_lookup proc
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; search for a file and a parent directory.
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lda cat_root
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sta bnum
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ix
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ldx #-1
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stx prev
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lda bnum
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jsr read_cat_block
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bcc @ok
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rts ; uhoh
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@ok
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lda buffer+BTNodeDescriptor.numRecords
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beq advance
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sta count
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ldx #512-2 ; last entry
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eloop
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lda buffer,x ; entry offset
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xba
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tay
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lda data+HFSCatalogKey.parentID,y
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xba
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cmp target_parent+2
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beq @p2
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blt lt
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bge gt
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@p2 lda data+HFSCatalogKey.parentID+2,y
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xba
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cmp target_parent+2
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beq @nm
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blt lt
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bge gt
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@gt
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; if this is an index node,
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; we overshot, so follow the tree via prev
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; to the next level.
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lda buffer+BTNodeDescriptor.kind-1
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bmi nope ; index map
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lda prev
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bmi nope
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sta bnum
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bra ix
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; now do a name check....
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; target_name is UPPER CASE
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jsr name_check
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cmp #0
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beq @found
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bmi @lt
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bra @gt
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@found
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; a match! if this is an index node,
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; descend....
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lda buffer+BTNodeDescriptor.kind-1
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bmi @leaf
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lda data+38+2,y
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xba
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sta bnum
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bra ix
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@leaf jmp match
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; if this is an index node, keep it for later
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@lt lda data+38+2,y
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xba
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sta prev
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@next
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dex
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dex
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dec count
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bne eloop
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advance
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lda data+BTNodeDescriptor.fLink
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beq nope
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xba
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sta bnum
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bra ix
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nope
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lda #file_not_found
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sec
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rts
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|
|
|
|
|
|
|
|
|
|
|
name_check
|
|
|
|
; copy into catstr and upper case it.
|
|
|
|
|
|
|
|
phx
|
|
|
|
phy ; save
|
|
|
|
|
|
|
|
|
|
|
|
;
|
|
|
|
; we need to handle 0-length strings (folder threads)
|
|
|
|
;
|
|
|
|
|
|
|
|
|
|
|
|
ldx #30
|
|
|
|
@zloop stz cat_str,x
|
|
|
|
dex
|
|
|
|
dex
|
|
|
|
bpl @zloop
|
|
|
|
stz cat_str_len
|
|
|
|
ldx #0
|
|
|
|
short m
|
|
|
|
|
|
|
|
lda data+HFSCatalogKey.nodeName,y
|
|
|
|
sta cat_str_len
|
|
|
|
@loop
|
|
|
|
lda data+HFSCatalogKey.nodeName+1,y
|
|
|
|
sta cat_str,x
|
|
|
|
iny
|
|
|
|
inx
|
|
|
|
cpx cat_str_len
|
|
|
|
blt @loop
|
|
|
|
|
|
|
|
upper
|
|
|
|
; now uppercase it
|
|
|
|
ldy #0
|
|
|
|
ldx cat_str_len
|
|
|
|
dex
|
|
|
|
@loop lda cat_str,y
|
|
|
|
cmp #'z'+1
|
|
|
|
bge @next
|
|
|
|
cmp #'a'
|
|
|
|
blt @next
|
|
|
|
and #$20
|
|
|
|
sta cat_str,y
|
|
|
|
|
|
|
|
@next iny
|
|
|
|
dex
|
|
|
|
bpl @loop
|
|
|
|
|
|
|
|
|
|
|
|
cmp
|
|
|
|
ldx target_str_len
|
|
|
|
cpx cat_str_len
|
|
|
|
bge @ok
|
|
|
|
ldx cat_str_len
|
|
|
|
@ok
|
|
|
|
dex
|
|
|
|
ldy #0
|
|
|
|
@loop
|
|
|
|
lda target_str,y
|
|
|
|
cmp cat_str,y
|
|
|
|
beq @next
|
|
|
|
blt lt
|
|
|
|
bge gt
|
|
|
|
|
|
|
|
@next
|
|
|
|
iny
|
|
|
|
bpl @loop
|
|
|
|
|
|
|
|
long m
|
|
|
|
lda #0
|
|
|
|
bra exit
|
|
|
|
|
|
|
|
lt long m
|
|
|
|
lda #-1
|
|
|
|
bra exit
|
|
|
|
|
|
|
|
gt long m
|
|
|
|
lda #1
|
|
|
|
|
|
|
|
exit
|
|
|
|
ply
|
|
|
|
plx
|
|
|
|
|
|
|
|
match ; a match!
|
|
|
|
; store the file type, aux type, eof, and extent pointers.
|
|
|
|
; a match!
|
|
|
|
lda buffer+HFSCatalogKey.keyLength,y
|
|
|
|
and #$ff
|
|
|
|
inc a ; doesn't include itself
|
|
|
|
clc
|
|
|
|
adc buffer,x ; x still valid
|
|
|
|
tay
|
|
|
|
|
|
|
|
lda buffer+HFSCatalogFile.recordType
|
|
|
|
xba
|
|
|
|
cmp #kHFSFolderRecord
|
|
|
|
beq folder
|
|
|
|
cmp #kHFSFileRecord
|
|
|
|
beq file
|
|
|
|
; folder thread, file thread.... invalid for us.
|
|
|
|
lda #file_not_found
|
|
|
|
sec
|
|
|
|
rts
|
|
|
|
folder
|
|
|
|
with HFSCatalogFolder
|
|
|
|
stz eof
|
|
|
|
stz eof+2
|
|
|
|
stz at
|
|
|
|
lda #$f
|
|
|
|
sta ft
|
|
|
|
lda #$0d
|
|
|
|
sta st ; storage type
|
|
|
|
ldx #12-2
|
|
|
|
@eloop
|
|
|
|
stz file_extents,x
|
|
|
|
dex
|
|
|
|
dex
|
|
|
|
bpl @eloop
|
|
|
|
|
|
|
|
|
|
|
|
lda data+folderID+2,y
|
|
|
|
xba
|
|
|
|
sta file_id
|
|
|
|
lda data+folderID,y
|
|
|
|
xba
|
|
|
|
sta file_id+2
|
|
|
|
|
|
|
|
lda #0
|
|
|
|
clc
|
|
|
|
rts
|
|
|
|
endwith
|
|
|
|
|
|
|
|
file
|
|
|
|
with HFSCatalogFile
|
|
|
|
lda buffer+dataLogicalSize+2,y
|
|
|
|
xba
|
|
|
|
sta eof
|
|
|
|
lda buffer+dataLogicalSize,y
|
|
|
|
xba
|
|
|
|
sta eof+2
|
|
|
|
|
|
|
|
lda #1
|
|
|
|
sta st ; storage type
|
|
|
|
|
|
|
|
|
|
|
|
lda buffer+dataExtents+0,y
|
|
|
|
xba
|
|
|
|
stz file_extents+0
|
|
|
|
|
|
|
|
lda buffer+dataExtents+2,y
|
|
|
|
xba
|
|
|
|
stz file_extents+2
|
|
|
|
|
|
|
|
lda buffer+dataExtents+4,y
|
|
|
|
xba
|
|
|
|
stz file_extents+4
|
|
|
|
|
|
|
|
lda buffer+dataExtents+6,y
|
|
|
|
xba
|
|
|
|
stz file_extents+6
|
|
|
|
|
|
|
|
lda buffer+dataExtents+8,y
|
|
|
|
xba
|
|
|
|
stz file_extents+8
|
|
|
|
|
|
|
|
lda buffer+dataExtents+10,y
|
|
|
|
xba
|
|
|
|
stz file_extents+10
|
|
|
|
|
|
|
|
lda data+fileID+2,y
|
|
|
|
xba
|
|
|
|
sta file_id
|
|
|
|
lda data+fileID,y
|
|
|
|
xba
|
|
|
|
sta file_id+2
|
|
|
|
|
|
|
|
; file type aux type logic.
|
|
|
|
; only support pdos encoding, nothing fancy.
|
|
|
|
; 'p' filetype aux type pdos
|
|
|
|
; where filetype = 80bit, aux type = 16 bit big endian
|
|
|
|
|
|
|
|
stz ft
|
|
|
|
stz at
|
|
|
|
lda data+userInfo+4,y
|
|
|
|
cmp #'dp'
|
|
|
|
bne @noft
|
|
|
|
lda data+userInfo+4+2,y
|
|
|
|
cmp #'so'
|
|
|
|
bne @noft
|
|
|
|
pdos
|
|
|
|
lda data+userInfo,y
|
|
|
|
tax
|
|
|
|
and #$ff
|
|
|
|
cmp #'p'
|
|
|
|
bne @noft
|
|
|
|
txa
|
|
|
|
xba
|
|
|
|
and #$ff
|
|
|
|
sta ft
|
|
|
|
lda data+userInfo+2,y
|
|
|
|
xba
|
|
|
|
sta at
|
|
|
|
@noft
|
|
|
|
|
|
|
|
lda #0
|
|
|
|
clc
|
|
|
|
rts
|
|
|
|
endwith
|
2021-07-17 21:02:39 +00:00
|
|
|
|
|
|
|
endp
|
|
|
|
|
|
|
|
|
2021-07-18 01:24:40 +00:00
|
|
|
|
2021-07-17 21:02:39 +00:00
|
|
|
;
|
|
|
|
; everything below here will be clobbered.
|
|
|
|
;
|
|
|
|
startup proc
|
|
|
|
;
|
|
|
|
; load the catalog extents
|
|
|
|
; lookup :system, :system:driver, :system:fsts, system:system:setup folders to save time later?
|
|
|
|
;
|
|
|
|
;
|
|
|
|
|
|
|
|
; read :system:start.gsos, load into memory @ $6800
|
|
|
|
; aux type is stored in auxtype
|
|
|
|
|
2021-07-18 01:24:40 +00:00
|
|
|
with dp, data
|
2021-07-17 21:02:39 +00:00
|
|
|
|
|
|
|
; assume 16-bit, etc.
|
|
|
|
|
|
|
|
stx slot
|
|
|
|
sty vector
|
|
|
|
sta unit
|
|
|
|
|
|
|
|
pea fakedp
|
|
|
|
pld
|
|
|
|
|
2021-07-18 01:24:40 +00:00
|
|
|
|
|
|
|
with HFSMasterDirectoryBlock
|
|
|
|
lda #2
|
|
|
|
jsr read_block_abs
|
|
|
|
; can't really fail...
|
|
|
|
lda buffer+drAlBlSt
|
|
|
|
xba
|
|
|
|
sta block_offset
|
|
|
|
|
|
|
|
ldx #3*HFSExtentDescriptor.sizeof-2
|
|
|
|
@cloop lda buffer+drCTExtRec,x
|
|
|
|
xba
|
|
|
|
sta cat_extents,x
|
|
|
|
dex
|
|
|
|
dex
|
|
|
|
bpl @cloop
|
|
|
|
|
|
|
|
; save the volume name while we're at it?
|
|
|
|
|
|
|
|
endwith
|
|
|
|
|
|
|
|
; find the root node.
|
|
|
|
lda cat_extents
|
|
|
|
jsr read_block
|
|
|
|
|
|
|
|
with BTHeaderRec
|
|
|
|
lda data+BTNodeDescriptor.sizeof+rootNode+2
|
|
|
|
xba
|
|
|
|
sta cat_root
|
|
|
|
|
|
|
|
;
|
|
|
|
; lookup SYSTEM
|
|
|
|
;
|
|
|
|
lda #kHFSRootFolderID
|
|
|
|
sta target_parent
|
|
|
|
lda #kHFSRootFolderID>>16
|
|
|
|
stz target_parent+2
|
|
|
|
ldx #30
|
|
|
|
@zloop stz target_str,x
|
|
|
|
dex
|
|
|
|
dex
|
|
|
|
bpl @zloop
|
|
|
|
|
|
|
|
ldx #14-2
|
|
|
|
@sloop
|
|
|
|
lda sys,x
|
|
|
|
sta target_str_len,x
|
|
|
|
dex
|
|
|
|
dex
|
|
|
|
bpl @sloop
|
|
|
|
|
|
|
|
jsr cat_lookup
|
|
|
|
bcs bad
|
|
|
|
|
|
|
|
; also check if dir?
|
|
|
|
|
|
|
|
lda file_id
|
|
|
|
sta system_id
|
|
|
|
sta target_parent
|
|
|
|
lda file_id+2
|
|
|
|
sta system_id+2
|
|
|
|
sta target_parent+2
|
|
|
|
|
|
|
|
; lookup System:FSTs
|
|
|
|
|
|
|
|
ldx #14-2
|
|
|
|
@floop
|
|
|
|
lda fsts,x
|
|
|
|
sta target_str_len,x
|
|
|
|
dex
|
|
|
|
dex
|
|
|
|
bpl @floop
|
|
|
|
|
|
|
|
jsr cat_lookup
|
|
|
|
bcs bad
|
|
|
|
; also check if dir?
|
|
|
|
|
|
|
|
lda file_id
|
|
|
|
sta fsts_id
|
|
|
|
lda file_id+2
|
|
|
|
sta fsts_id+2
|
|
|
|
|
|
|
|
; lookup System:Drivers
|
|
|
|
|
|
|
|
ldx #14-2
|
|
|
|
@dloop
|
|
|
|
lda drv,x
|
|
|
|
sta target_str_len,x
|
|
|
|
dex
|
|
|
|
dex
|
|
|
|
bpl @dloop
|
|
|
|
|
|
|
|
jsr cat_lookup
|
|
|
|
bcs bad
|
|
|
|
; also check if dir?
|
|
|
|
|
|
|
|
lda file_id
|
|
|
|
sta driver_id
|
|
|
|
lda file_id+2
|
|
|
|
sta driver_id+2
|
|
|
|
|
|
|
|
|
|
|
|
; lookup System:Start.GS.OS
|
|
|
|
ldx #14-2
|
|
|
|
@gloop
|
|
|
|
lda gsos,x
|
|
|
|
sta target_str_len,x
|
|
|
|
dex
|
|
|
|
dex
|
|
|
|
bpl @gloop
|
|
|
|
|
|
|
|
jsr cat_lookup
|
|
|
|
bcs bad
|
|
|
|
|
|
|
|
|
2021-07-17 21:02:39 +00:00
|
|
|
|
|
|
|
lda at
|
|
|
|
sta auxtype
|
|
|
|
|
2021-07-18 01:24:40 +00:00
|
|
|
; lda #$1000 ; drivers:boot.driver support
|
|
|
|
; ldx #0
|
|
|
|
; ldy #0
|
|
|
|
jmp $6800
|
2021-07-17 21:02:39 +00:00
|
|
|
|
|
|
|
|
2021-07-18 01:24:40 +00:00
|
|
|
sys str.w 'SYSTEM'
|
|
|
|
dcb.b 6,0
|
|
|
|
fsts str.w 'FSTS'
|
|
|
|
dcb. 8,0
|
|
|
|
drv str.w 'DRIVERS'
|
|
|
|
dcb.b 5,0
|
|
|
|
gsos str.w 'START.GS.OS'
|
|
|
|
dcb.b 1,0
|
|
|
|
endp
|
2021-07-17 21:02:39 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
fakedp proc
|
|
|
|
end
|
|
|
|
|
|
|
|
end
|