mirror of
https://github.com/Tolik-Trek/Estex-DSS.git
synced 2026-06-15 01:11:48 +03:00
1032 lines
23 KiB
NASM
1032 lines
23 KiB
NASM
;[BEGIN]
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||
;//MODULE: FAT
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;//CREATE: 19-05-1998 AUTHOR: Denis Parinov
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;//UPDATE: 24-10-1999 DNS Restore module
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;---------------------------------------------------------------
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;Rev Date Name Description
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;---------------------------------------------------------------
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;R08 14-11-2002 DNS IMPROVE BPB-FUNCTION
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;R07 17-12-1999 DNS BUG FIX SIGNATURE #55AA AT 510 OFFSET
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;---------------------------------------------------------------
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;----------------------------------------------------------------------;
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; <20>®¨áª § ¯¨á¨ ª â «®£ ¢ ᯨ᪥ ª â «®£
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;
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; ¢å®¤: a = âਡãâ § ¯¨á¨
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; ¢ë室: de = ¨¤¥ªá § ¯¨á¨ ¢ ᯨ᪥ ª â «®£
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; (HANDBUF) = file's direcory record
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; CF - ª â «®£ ¥ ©¤¥
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SEARCH:
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.Dir: ;LD A,FAT_ATTR.DIRECTORY
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LD A,FAT_ATTR.HiddenSysDir
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CALL .Custom
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RET NC
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CP DSS_Error.sys.PATH_NOT_FOUND + 1
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RET C
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;
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SCF
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LD A,DSS_Error.sys.TOO_MANY_FILES_IN_DIR
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RET
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;
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.File: LD A,FAT_ATTR.NoDIRnoVolID
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.Custom: EX AF,AF' ; A = 76ADLSHR
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SET_PAGE_X DIRPAGE
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;PUSH AF
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EX AF,AF'
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;
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CPL
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LD C,A
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LD IX,DIRPAGE.buffer
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;!TEST 9/11/23 record index
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; ®¯â¨¬¨§ æ¨ï ¤«ï ¨¤¥ªá § ¯¨á¨ ¢ ᯨ᪥ ª â «®£ .
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; <09>® ¤®¡¨âáï ¢¥àãâì ¤«ï ¯¥à¥¡®à ª â «®£ > #4000 ¡ ©â
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; EXX
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; LD DE,0
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; EXX
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;
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.loop: LD A,(IX+_sFAT_DIRECTORY_RECORD.NAME)
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OR A
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JR Z,.error_file_not_found
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CP #E5 ;!HARDCODE #E5 - § ¯¨áì ¢ ¤¨à¥ªâ®à¨¨ ᢮¡®¤ , â ª ª ª ä ©«/¤¨à¥ªâ®à¨ï ¡ë«¨ 㤠«¥ë
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JR Z,.next_record
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LD A,(IX+_sFAT_DIRECTORY_RECORD.ATTRIBUT)
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AND C
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JR NZ,.next_record
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LD HL,MASKARE
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LD D,XH
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LD E,XL
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LD B,11
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EX DE,HL
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.loop_compare:
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LD A,(DE)
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CP '?'
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JR Z,.next_char
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CP (HL)
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JR NZ,.next_record
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.next_char:
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INC HL
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INC DE
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DJNZ .loop_compare
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;
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LD D,XH
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LD E,XL
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;!TEST 9/11/23 record index
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; EXX
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; PUSH DE
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; EXX
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PUSH IX
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;
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LD HL,HANDBUF
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EX DE,HL
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LD BC,HANDBUF.SIZE
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LDIR
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;!TEST 9/11/23 record index
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POP DE
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;
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EX AF,AF'
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OUT (SLOT3),A
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EX AF,AF'
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AND A
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RET
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.next_record:
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;!TEST 9/11/23 record index
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; EXX
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; INC DE
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; EXX
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;
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LD DE,#0020 ;!HARDCODE
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ADD IX,DE
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JR NC,.loop
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.error_too_many_files:
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EX AF,AF'
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OUT (SLOT3),A
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LD A,DSS_Error.sys.TOO_MANY_FILES_IN_DIR
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SCF
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RET
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;
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.error_file_not_found:
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EX AF,AF'
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OUT (SLOT3),A
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LD A,DSS_Error.sys.FILE_NOT_FOUND
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SCF
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RET
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;----------------------------------------------------------------------;
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;
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;!TODO ?
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;GHANDLE:
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; PUSH DE
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; PUSH HL
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; PUSH IX
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; CALL TESTDSK
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; JP C,G_HAND1
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; CALL LOADDIR
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; POP DE
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; LD HL,DIR
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; LD BC,#0020
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;G_HAND2:
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; LD A,D
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; OR E
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; JP Z,G_HAND3
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; ADD HL,BC
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; DEC DE
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; JP G_HAND2
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;G_HAND3:
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; EXX
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; POP DE
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; EXX
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;G_HAND4:
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; EX DE,HL
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; LD A,DIRPAGE
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; CALL BANK
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; EX DE,HL
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; LD DE,HANDTA
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;
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; DUP 32
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; LDI
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; EDUP
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;
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; EXX
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; OUT (SLOT3),A
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; LD HL,HANDTA
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;
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; DUP 32
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; LDI
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; EDUP
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;
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; EXX
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; POP BC
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; DEC BC
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; LD A,B
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; OR C
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; RET Z
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; PUSH BC
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; JP G_HAND4
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;G_HAND1 POP IX
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; POP HL
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; POP DE
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; RET
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;HANDTA BLOCK 32,0
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;
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;----------------------------------------------------------------------;
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; FIND "MASKAREA" IN DIRECTORY
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; [x] fat32 ;!TEST
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; ¢ë室: IY:DE - cluster number
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FINDDIR:
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SET_PAGE_X DIRPAGE
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;
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PUSH AF
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LD IX,DIRPAGE.buffer
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.big_loop:
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LD A,(IX + _sFAT_DIRECTORY_RECORD.NAME)
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OR A
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JR Z,.error
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CP #E5
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JR Z,.next_step
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LD A,(IX + _sFAT_DIRECTORY_RECORD.ATTRIBUT)
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AND FAT_ATTR.DIRECTORY
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JR Z,.next_step
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LD HL,MASKARE
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LD D,XH
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LD E,XL
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EX DE,HL
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LD B,11 ;!HARDCODE
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.loop: LD A,(DE)
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CP "?"
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JR Z,.compared
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CP (HL)
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JR NZ,.next_step
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.compared:
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INC HL
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INC DE
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DJNZ .loop
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;
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LD A,(IX + _sFAT_DIRECTORY_RECORD.NAME)
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CP "."
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JP NZ,.ADDSPEC
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LD A,(IX + _sFAT_DIRECTORY_RECORD.NAME + 1)
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CP "."
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JP NZ,.IT_DIR
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LD HL,WorkDirectory
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LD D,H
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LD E,L
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INC HL
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LD BC,WorkDirectory.DEPTH
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XOR A
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CPIR
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JP PO,.error ;[x] 20/11/23 ¯à®¢¥àª ¢ë室 § £à ¨æë
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DEC HL ;R009
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DEC HL
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LD BC,WorkDirectory.DEPTH
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LD A,'\'
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CPDR
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INC HL
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EX DE,HL
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; CF = 0
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SBC HL,DE
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EX DE,HL
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JR NZ,.MM3
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INC HL
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.MM3: LD (HL),0
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JP .IT_DIR
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;
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.next_step:
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LD BC,#0020 ;!HARDCODE
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ADD IX,BC
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JR NC,.big_loop
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;
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.error: POP AF
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OUT (SLOT3),A
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LD A,DSS_Error.sys.PATH_NOT_FOUND
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SCF
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RET
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;
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.ADDSPEC:
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LD HL,WorkDirectory+1
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LD BC,WorkDirectory.DEPTH-1
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CALL .CHECK_SLASH
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JR C,.error
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;R011
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LD A,B
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AND A
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JR NZ,.nxt
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LD A,C
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CP 8+1+3 ;!HARDCODE ¨¬ï ª â «®£ + â®çª + à áè¨à¥¨¥
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JR C,.error
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.nxt: ;
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LD E,XL
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LD D,XH
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; [x] ®¯â¨¬¨§ æ¨ï ¯® à §¬¥àã
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EX DE,HL
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CALL GetName
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EX DE,HL
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;
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; LD BC,256*8 + ' ' ;!HARDCODE
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; .MM1: LD A,(DE)
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; INC DE
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; CP C
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; JR Z,.MM2
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; LD (HL),A
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; INC HL
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; .MM2 DJNZ .MM1 ;x42-40 50-55
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; LD A,(DE)
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; INC DE
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; CP C
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; JR Z,.MM3
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; LD (HL),"."
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; INC HL
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; LD (HL),A
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; INC HL
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; LD A,(DE)
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; INC DE
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; CP C
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; JR Z,.MM3
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; LD (HL),A
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; INC HL
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; LD A,(DE)
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; CP C
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; JR Z,.MM3
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; LD (HL),A
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; .MM2_5: INC HL
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; .MM3: LD (HL),0
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; ; JP IT_DIR
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;
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.IT_DIR:; fat32
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LD E,(IX + _sFAT_DIRECTORY_RECORD.FIRST_CLUSTER_H)
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LD D,(IX + _sFAT_DIRECTORY_RECORD.FIRST_CLUSTER_H+1)
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LD YH,D
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LD YL,E
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LD E,(IX + _sFAT_DIRECTORY_RECORD.FIRST_CLUSTER_L)
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LD D,(IX + _sFAT_DIRECTORY_RECORD.FIRST_CLUSTER_L+1)
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POP AF
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OUT (SLOT3),A
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AND A
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RET
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.CHECK_SLASH:
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XOR A
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CPIR
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;[x] 20/11/23 ¯à®¢¥àª ¢ë室 § £à ¨æë
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SCF
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RET PO
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;
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DEC HL
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DEC HL
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LD A,'\' ; #5C
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CP (HL)
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INC HL
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RET Z
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LD (HL),A
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INC HL
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LD (HL),0
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;INC HL
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RET
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;----------------------------------------------------------------------;
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CHECK_ROOT_CLUSTER:
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EX DE,HL
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LD HL,(CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_L) ;R005
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LD A,L
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OR H
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LD HL,(CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_H)
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OR L
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OR H
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EX DE,HL
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RET
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;----------------------------------------------------------------------;
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; ¢å®¤: HL - ¨¬ï ¤¨à¥ªâ®à¨¨
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; [x] fat32 ;!TEST
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; !FIXIT «®¢¨âáï ¤¢®©®¥ ®¡à 饨¥ ¯à¨ ®âªàë⨨ ª®àï ¤¨áª , ¯à¨¬¥à
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OPENDIR: LD IY,CORE_BUFFERS.FM_BUF
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LD A,(HL)
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OR A
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JR NZ,.SUBDIR
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.REROOT: ; fat32
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; EX DE,HL
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; LD HL,(CORE_BUFFERS.FatBuffer.RootDirStartCluster_L)
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; LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_L),HL
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; LD HL,(CORE_BUFFERS.FatBuffer.RootDirStartCluster_H)
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; LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_H),HL
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; EX DE,HL
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LD DE,0
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LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_L),DE
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LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_H),DE
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CALL LOADDIR
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; CF=0
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LD HL,WorkDirectory
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LD (HL),'\'
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INC HL
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LD (HL),#00
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;AND A
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RET
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;
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.SUBDIR: CP "."
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JR NZ,.SUBDIR2
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; fat32
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CALL CHECK_ROOT_CLUSTER
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JR NZ,.no_root ;R005
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; "cd ." or "cd .."
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;R005
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INC HL
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LD A,(HL)
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OR A
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DEC HL
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JR Z,.REROOT
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;
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.no_root: EXX
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LD HL,MASKARE
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LD DE,MASKARE+1
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LD BC,10 ;!HARDCODE
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LD (HL),' '
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LDIR
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EXX
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LD DE,MASKARE
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.loop: LDI
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LD A,(HL)
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OR A
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JR NZ,.loop
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JR .SUBDIR3
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;
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.SUBDIR2: CALL MASK.name
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RET C
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; fat32
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.SUBDIR3: CALL FINDDIR
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RET C
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EX DE,HL
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LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_L),HL ; fat32
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LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_H),IY ; fat32
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LD HL,#4000 ;!HARDCODE
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LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.F_SIZE),HL
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;EX DE,HL
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;JP LOADDIR
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;--------------;
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; <20>à®ç¨â âì ᯨ᮪ ª â «®£
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; [x] fat32 ;!TEST
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LOADDIR: ;!TODO optimize
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CALL LOAD_SAVE_DIR_PREPARE
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PUSH AF
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EX AF,AF'
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JR NZ,.read_dir
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LD A,(CORE_BUFFERS.FatBuffer.FAT_TYPE)
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CP FAT_TYPE.x32
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JR NZ,.LoadRootDir
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; fat32
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LD HL,(CORE_BUFFERS.FatBuffer.RootDirStartCluster_L)
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LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_L),HL
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LD HL,(CORE_BUFFERS.FatBuffer.RootDirStartCluster_H)
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LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_H),HL
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; CALL .read_dir
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; LD HL,0
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; LD (CORE_BUFFERS.FM_BUF.FS_REC.FIRST_CLUSTER_L),HL
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; LD (CORE_BUFFERS.FM_BUF.FS_REC.FIRST_CLUSTER_H),HL
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; RET
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;
|
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.read_dir: LD HL,DIRPAGE.buffer ; ªã¤
|
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LD DE,#4000 ; ᪮«ìª®
|
||
XOR A ; ¤¥áªà¨¯â®à
|
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CALL READ ; ç⥨¥ ¨§ ä ©«
|
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LD (SAVEDIR.DIRSIZE),DE ; ç¨á«® ¯à®ç¨â. ¡ ©â®¢
|
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POP AF
|
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OUT (SLOT3),A
|
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RET
|
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;
|
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.LoadRootDir: LD HL,(CORE_BUFFERS.FatBuffer.RootDirFirstSector_H) ; áâ. à §àï¤
|
||
LD IX,(CORE_BUFFERS.FatBuffer.RootDirFirstSector_L) ; ®¬¥à «®£. ᥪâ®à
|
||
LD A,(CORE_BUFFERS.FatBuffer.DirSizeInSectors)
|
||
LD B,32 ; !HARDCODE sector size 512. 16384/(sector 512). à §¬¥à root-ª â «®£
|
||
CP B
|
||
JR NC,.RTD1
|
||
LD B,A ; ç¨á«® ᥪâ®à®¢
|
||
.RTD1: LD A,(CORE_BUFFERS.FatBuffer.DRIVE) ; ®¬¥à ¤¨áª
|
||
LD DE,DIRPAGE.buffer ; ¡ãä¥à
|
||
LD C,Dss.DRV.Read ; ç⥨¥ ᥪâ®à®¢
|
||
RST ToDSS.DRV
|
||
POP AF
|
||
OUT (SLOT3),A
|
||
RET
|
||
;----------------------------------------------------------------------;
|
||
|
||
LOAD_SAVE_DIR_PREPARE:
|
||
;!TODO optimize
|
||
XOR A ; FILE MANIPULATOR = 0
|
||
LD H,A
|
||
LD L,A
|
||
LD IX,0
|
||
LD B,A ; ®â ç « ä ©«
|
||
CALL MOVE_FP
|
||
;
|
||
SET_PAGE_X DIRPAGE
|
||
AND A
|
||
EX AF,AF'
|
||
;
|
||
LD A,(CORE_BUFFERS.FatBuffer.DRIVE)
|
||
LD (IY+_sFM.DRIVE),A
|
||
;!FIXIT ¯¥à¥¤¥« âì à ¡®âã ¡¥§ IY
|
||
LD A,(IY+_sFM.FS_REC.FIRST_CLUSTER_L)
|
||
OR (IY+_sFM.FS_REC.FIRST_CLUSTER_L+1)
|
||
OR (IY+_sFM.FS_REC.FIRST_CLUSTER_H)
|
||
OR (IY+_sFM.FS_REC.FIRST_CLUSTER_H+1)
|
||
EX AF,AF'
|
||
RET
|
||
|
||
;!TODO FAT procedures
|
||
;----------------------------------------------------------------------;
|
||
; ‘¡à®á¨âì ª¥è ª â «®£ ¤¨áª.
|
||
; ¢å®¤: iy=áâàãªâãà ¤¥áªà¨¯â®à
|
||
; [x] fat32 ;!TEST
|
||
SAVEDIR: ;!TODO optimize
|
||
CALL LOAD_SAVE_DIR_PREPARE
|
||
PUSH AF
|
||
EX AF,AF'
|
||
JR NZ,.save_dir
|
||
;
|
||
LD A,(CORE_BUFFERS.FatBuffer.FAT_TYPE)
|
||
CP FAT_TYPE.x32
|
||
JR NZ,.SaveRootDir
|
||
; fat32
|
||
LD HL,(CORE_BUFFERS.FatBuffer.RootDirStartCluster_L)
|
||
LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_L),HL
|
||
LD HL,(CORE_BUFFERS.FatBuffer.RootDirStartCluster_H)
|
||
LD (CORE_BUFFERS.FM_BUF + _sFM.FS_REC.FIRST_CLUSTER_H),HL
|
||
;
|
||
.save_dir: LD HL,DIRPAGE.buffer
|
||
; à §¬¥à ᯨ᪠ª â «®£ size_cash_directory
|
||
;!FIXIT ¥á«¨ ® 㦠, â® ¯à®¢¥à¨âì ¡ £¨ ( ¯à¨¬¥à, à §¬¥à ¤¨à४â®à¨¨ ¬¥ìè¥ ¯à¨ ®âªàë⨨ ¨ ¡®«ìè¥ ¯®á«¥ ¯à ¢®ª)
|
||
; ª®£¤ ¡ã¤¥â ç⥨¥ ªã᪠¬¨ ª â «®£ ¢ ªíè, âãâ ¥éñ áçñâ稪 ¯à¨ªàãâ¨âì
|
||
.DIRSIZE+1: LD DE,0
|
||
XOR A
|
||
CALL WRITE
|
||
POP AF
|
||
OUT (SLOT3),A
|
||
RET
|
||
;
|
||
.SaveRootDir: LD HL,(CORE_BUFFERS.FatBuffer.RootDirFirstSector_H)
|
||
LD IX,(CORE_BUFFERS.FatBuffer.RootDirFirstSector_L)
|
||
LD A,(CORE_BUFFERS.FatBuffer.DirSizeInSectors)
|
||
LD B,32 ;!HARDCODE sector size 512, Root Dir max size in sectors
|
||
SUB B
|
||
JR NC,.RTD1S
|
||
ADD A,B
|
||
LD B,A
|
||
.RTD1S: LD A,(CORE_BUFFERS.FatBuffer.DRIVE)
|
||
LD DE,DIRPAGE.buffer
|
||
LD C,Dss.DRV.Write
|
||
RST ToDSS.DRV
|
||
POP AF
|
||
OUT (SLOT3),A
|
||
RET
|
||
;----------------------------------------------------------------------;
|
||
|
||
|
||
;----------------------------------------------------------------------;
|
||
; ᪮¯¨à®¢ âì § ¯¨áì ¢ ᯨ᮪ ¤¨áª (ª â «®£ ) de ix iy
|
||
; ¨ á¡à®á¨âì ª¥è ª â «®£ ¤¨áª
|
||
; ¢å®¤: (HANDBUF) - § ¯¨áì ª â «®£
|
||
WRT_HND: SET_PAGE_X DIRPAGE
|
||
EX AF,AF'
|
||
;
|
||
;LD IX,DIRPAGE.buffer
|
||
LD HL,DIRPAGE.buffer
|
||
;!TEST 9/11/23 record index
|
||
; EXX
|
||
; LD DE,0
|
||
; EXX
|
||
;
|
||
LD BC,#0020
|
||
.loop: ;LD A,(IX+00)
|
||
LD A,(HL)
|
||
OR A
|
||
JR Z,.WRT_HN2
|
||
CP #E5
|
||
JR Z,.WRT_HN2
|
||
;ADD IX,BC
|
||
ADD HL,BC
|
||
JR NC,.loop ;!FIXIT ª®«¨ç¥á⢮ § ¯¨á¥© ª â «®£ = áâà ¨æ
|
||
;
|
||
EX AF,AF'
|
||
OUT (SLOT3),A
|
||
LD A,DSS_Error.sys.ROOT_OVERFLOW
|
||
SCF
|
||
RET
|
||
.WRT_HN2:
|
||
;LD D,XH
|
||
;LD E,XL
|
||
EX DE,HL
|
||
LD HL,HANDBUF
|
||
LD BC,HANDBUF.SIZE
|
||
LDIR
|
||
EX AF,AF'
|
||
OUT (SLOT3),A
|
||
LD HL,DIRPAGE.buffer
|
||
LD BC,(SAVEDIR.DIRSIZE)
|
||
DEC BC
|
||
ADD HL,BC
|
||
AND A
|
||
SBC HL,DE
|
||
JP NC,SAVEDIR
|
||
LD HL,(SAVEDIR.DIRSIZE)
|
||
LD BC,(CORE_BUFFERS.FatBuffer.BytesPerCluster)
|
||
ADD HL,BC
|
||
LD (SAVEDIR.DIRSIZE),HL
|
||
AND A
|
||
JP SAVEDIR
|
||
;----------------------------------------------------------------------;
|
||
|
||
|
||
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||
; ¥ ¨á¯®«ì§ã¥âáï
|
||
; TESTDSK: ;????? ¢®§¬®¦®, çâ® âãâ «®£¨ç¥¥, 祬 ¢ ç «¥ OPENDSK, ¥á«¨ ¡ã¤¥â à ¡®â âì Dss.DRV.Open
|
||
; LD A,(CORE_BUFFERS.FatBuffer.DRIVE)
|
||
; LD C,Dss.DRV.MediaCheck
|
||
; RST ToDSS.DRV
|
||
; OR A
|
||
; RET Z
|
||
|
||
|
||
; ॣ. A - ®¬¥à ¤¨áª
|
||
; [ ] fat32
|
||
RD_BPB: LD C,SLOT3
|
||
IN B,(C)
|
||
PUSH BC
|
||
IN A,(SLOT0)
|
||
OUT (SLOT3),A
|
||
LD A,(CORE_BUFFERS.FatBuffer.DRIVE)
|
||
LD DE,CORE_BUFFERS.SECBUF+#C000 ;R08
|
||
LD C,Dss.DRV.GetBPB
|
||
RST ToDSS.DRV
|
||
POP BC
|
||
OUT (C),B
|
||
JP C,DOS_X_Error.Not_ready
|
||
;
|
||
LD DE,#AA55 ; ᨣ âãà ;R05
|
||
LD HL,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.MBR_SIGNATURE) ;R08 ;R07
|
||
;R05
|
||
AND A
|
||
SBC HL,DE
|
||
JP NZ,DOS_X_Error.UnknownBPB
|
||
;
|
||
; ;R08 ; [x] fat32
|
||
; LD HL,CORE_BUFFERS.SECBUF
|
||
; LD DE,CORE_BUFFERS.BootSector
|
||
; LD BC,_sBOOT_SECTOR_PARAMS_FAT32 ; size
|
||
; LDIR
|
||
;
|
||
LD A,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.DRIVE_TYPE)
|
||
CP #F0
|
||
JP C,DOS_X_Error.UnknownBPB
|
||
;
|
||
;!TODO ¯à®¢¥à¨âì ¯® ¬¥âª¥ à §¤¥« , çâ® íâ® FAT, ¯®â®¬ ®¯à¥¤¥«ïâì ª ª®© FAT
|
||
;
|
||
LD HL,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.BytesPerSector)
|
||
LD (CORE_BUFFERS.FatBuffer.BytesPerSector),HL
|
||
LD A,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.SectorsPerCluster)
|
||
LD (CORE_BUFFERS.FatBuffer.SectorsPerCluster),A
|
||
; calc. first sector FAT
|
||
LD HL,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.RESERVED_SECTORS)
|
||
;
|
||
; LD E,(IY+_sBOOT_SECTOR_PARAMS.HIDDEN) ;Hidden sec
|
||
; LD D,(IY+_sBOOT_SECTOR_PARAMS.HIDDEN+1)
|
||
; ADD HL,DE
|
||
;
|
||
;!FIXIT ¤«ï fat32 ¢âëª âì áî¤ á¥ªâ®à ªâ¨¢®© â ¡«¨æë
|
||
LD (CORE_BUFFERS.FatBuffer.FAT1_SEC_L),HL ; low word first sector FAT #1
|
||
LD (CORE_BUFFERS.FatBuffer.FAT2_SEC_L),HL ; low word first sector FAT #2
|
||
;[ ] fat32
|
||
XOR A
|
||
LD B,A
|
||
LD C,A
|
||
LD (CORE_BUFFERS.FatBuffer.FAT1_SEC_H),BC ; high word first sector FAT #1 ; [ ] fat32
|
||
LD (CORE_BUFFERS.FatBuffer.FAT2_SEC_H),BC ; high word first sector FAT #1 ; [ ] fat32
|
||
;LD (CORE_BUFFERS.FatBuffer.END_CHAIN_CLUSTER_H),BC ; [ ] fat32 reset variables
|
||
;LD (CORE_BUFFERS.FatBuffer.MaxClusterHigh),BC ; [ ] fat32 reset variables
|
||
LD (CORE_BUFFERS.FatBuffer.SectorsPerFAT_H),A ; [ ] fat32
|
||
;
|
||
;
|
||
LD DE,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.SectorsPerFAT16)
|
||
LD A,E
|
||
OR D
|
||
JR NZ,.skip_high
|
||
;
|
||
LD BC,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.SectorsPerFAT32 + 2)
|
||
LD A,C
|
||
LD (CORE_BUFFERS.FatBuffer.SectorsPerFAT_H),A
|
||
LD DE,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.SectorsPerFAT32)
|
||
.skip_high: LD (CORE_BUFFERS.FatBuffer.SectorsPerFAT_L),DE
|
||
;
|
||
LD A,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.Number_of_FATs) ; amount FATs
|
||
CP 1
|
||
JR Z,.one_FAT
|
||
DEC A
|
||
ADD HL,DE
|
||
LD (CORE_BUFFERS.FatBuffer.FAT2_SEC_L),HL
|
||
JR NC,.no_inc_BC
|
||
INC BC
|
||
.no_inc_BC: LD (CORE_BUFFERS.FatBuffer.FAT2_SEC_H),BC
|
||
.one_FAT: ;C_DATA1
|
||
.loop1: ADD HL,DE
|
||
JR NC,.loop1_1
|
||
INC BC
|
||
.loop1_1: DEC A
|
||
JR NZ,.loop1
|
||
;
|
||
LD (CORE_BUFFERS.FatBuffer.RootDirFirstSector_L),HL ; first sector DIR
|
||
|
||
LD BC,(CORE_BUFFERS.FatBuffer.BytesPerSector)
|
||
LD A,B
|
||
AND A
|
||
;
|
||
RL C
|
||
RLA
|
||
RL C
|
||
RLA
|
||
RL C
|
||
RLA
|
||
;
|
||
LD C,A
|
||
LD B,0 ; BC - File handels in sectors
|
||
;;;;
|
||
IF COMPILE_UNUSED_CODE
|
||
LD (CORE_BUFFERS.FatBuffer.FilesPerSector),A
|
||
ENDIF
|
||
;
|
||
EX DE,HL
|
||
LD HL,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.FilesInRootDIR) ; 0 for fat32
|
||
; [ ]fat32 ;!TEST
|
||
LD A,H
|
||
OR L
|
||
JR Z,.skip_loop2
|
||
;
|
||
DEC HL
|
||
XOR A
|
||
;NEXTAD2
|
||
.loop2: INC A
|
||
JP Z,DOS_X_Error.UnknownBPB
|
||
SBC HL,BC
|
||
JR NC,.loop2
|
||
;
|
||
.skip_loop2: EX DE,HL
|
||
LD C,A ; A - sectors in DIR
|
||
LD B,0
|
||
LD (CORE_BUFFERS.FatBuffer.DirSizeInSectors),A
|
||
|
||
ADD HL,BC ; Start DATA area
|
||
LD (CORE_BUFFERS.FatBuffer.FirstDataSector_L),HL
|
||
; B = 0
|
||
;
|
||
LD HL,(CORE_BUFFERS.FatBuffer.BytesPerSector)
|
||
LD A,(CORE_BUFFERS.FatBuffer.SectorsPerCluster)
|
||
;!TODO FATcacheSize
|
||
; calc. cluster size
|
||
XOR 1
|
||
JR Z,.loop3.end
|
||
RRA
|
||
.loop3: ADD HL,HL
|
||
RRA
|
||
JP NC,.loop3
|
||
.loop3.end: ;
|
||
LD (CORE_BUFFERS.FatBuffer.BytesPerCluster),HL
|
||
;
|
||
IF COMPILE_UNUSED_CODE
|
||
EX DE,HL
|
||
LD HL,#3FFF ;!HARDCODE ;!TODO FATcacheSize
|
||
XOR A
|
||
;NEXTAD4 ;!FIXIT ®¯â¨¬¨§¨à®¢ âì ª®£¤ ¯® ¤®¡¨âáï
|
||
.loop4: INC A
|
||
JP Z,DOS_X_Error.UnknownBPB
|
||
SBC HL,DE
|
||
JR NC,.loop4
|
||
LD (CORE_BUFFERS.FatBuffer.ClustersPerBank),A ; A - Clusters per bank (16k)
|
||
ENDIF
|
||
|
||
////////////////////////////////////////////////////////////////
|
||
////////////////////////////////////////////////////////////////
|
||
////////////////////////////////////////////////////////////////
|
||
; LD HL,CORE_BUFFERS.SECBUF + _sBOOT_SECTOR_PARAMS.ID_FAT ;!!!!! ¥á«¨ IY ¨á¯®«ì§ã¥âáï ¤«ï ¯¥à¥¬¥®£® BootSector, â® ¡ã¤¥â ¡ £
|
||
; LD DE,FAT_STRING
|
||
; LD B,3
|
||
; ;R_BPBL1
|
||
; .loop5: LD A,(DE)
|
||
; CP (HL)
|
||
; JP NZ,.IBM_DOS
|
||
; INC HL
|
||
; INC DE
|
||
; DJNZ .loop5
|
||
;FID
|
||
; .loop6: LD A,(HL)
|
||
; INC HL
|
||
; CP ' '
|
||
; JR Z,.loop6
|
||
; ;
|
||
; CP '1'
|
||
; JP Z,.fat1x
|
||
; CP '3'
|
||
; JP NZ,DOS_X_Error.UnknownBPB
|
||
; LD A,#52 ; #52-#20 = #32 fat type
|
||
; LD HL,#0FFF
|
||
; LD (CORE_BUFFERS.FatBuffer.END_CHAIN_CLUSTER_H),HL
|
||
; LD (CORE_BUFFERS.FatBuffer.MaxClusterHigh),HL ; [ ] fat32 ;!FIXIT
|
||
; LD H,L
|
||
; JR .BPB_FAT
|
||
; ;
|
||
; .fat1x: LD A,(HL)
|
||
; CP '2' ; FAT16
|
||
; LD HL,#0FFF
|
||
; JR Z,.BPB_FAT
|
||
; CP '6' ; FAT12
|
||
; JP NZ,DOS_X_Error.UnknownBPB
|
||
; LD H,L
|
||
; .BPB_FAT: SUB #20 ; A-#20 = fat type (#12, #16, #32)
|
||
; LD (CORE_BUFFERS.FatBuffer.FAT_TYPE),A
|
||
; LD (CORE_BUFFERS.FatBuffer.END_CHAIN_CLUSTER_L),HL
|
||
;!TODO ¥ ¨á¯®«ì§ã¥âáï § 票¥ ¢ëç¨á«ï¥¬®¥ ¨ á®åà 塞®¥ ¢ FatBuffer
|
||
////////////////////////////////////////////////////////////////////////
|
||
; LD HL,0
|
||
; LD BC,(CORE_BUFFERS.SECBUF + _sBOOT_SECTOR_PARAMS.SectorsPerTrack) ; Sector per track
|
||
; LD A,(CORE_BUFFERS.SECBUF + _sBOOT_SECTOR_PARAMS.HEADS)
|
||
; .BPB_L1: ; calc. sector per cylinder
|
||
; ADD HL,BC
|
||
; DEC A
|
||
; JR NZ,.BPB_L1
|
||
; LD (CORE_BUFFERS.FatBuffer.S_X_H),HL
|
||
////////////////////////////////////////////////////////////////////////
|
||
; [ ] fat32
|
||
LD HL,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.SectorsPerDrive)
|
||
LD DE,(CORE_BUFFERS.FatBuffer.FirstDataSector_L)
|
||
LD A,H
|
||
OR L
|
||
JP NZ,.HDDSMAL
|
||
;
|
||
LD HL,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.BPB_BIG_TOTAL_SECTORS_L)
|
||
LD BC,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.BPB_BIG_TOTAL_SECTORS_H)
|
||
PUSH BC ; Total Sectors high
|
||
PUSH HL ; Total Sectors low
|
||
AND A
|
||
SBC HL,DE
|
||
JP NC,.HDDBIG
|
||
DEC BC
|
||
JP .HDDBIG
|
||
;
|
||
.HDDSMAL: ; CF = 0
|
||
LD BC,0
|
||
PUSH BC ; Total Sectors high
|
||
PUSH HL ; Total Sectors low
|
||
SBC HL,DE
|
||
;
|
||
.HDDBIG: CALL ClusterToSector
|
||
; LD A,(CORE_BUFFERS.FatBuffer.SectorsPerCluster)
|
||
; SCF
|
||
; .loop7: RRA
|
||
; JR C,.loop7_exit
|
||
; RR B
|
||
; RR C
|
||
; RR H
|
||
; RR L
|
||
; JP .loop7
|
||
;
|
||
.loop7_exit: INC HL
|
||
LD (CORE_BUFFERS.FatBuffer.MaxClusterLow),HL
|
||
LD (CORE_BUFFERS.FatBuffer.MaxClusterHigh),BC
|
||
;
|
||
XOR A
|
||
LD H,A
|
||
LD L,A
|
||
LD (CORE_BUFFERS.FatBuffer.CacheBlock),HL
|
||
LD (CORE_BUFFERS.FatBuffer.CacheUpdated),A
|
||
; A = 0
|
||
LD HL,(CORE_BUFFERS.FatBuffer.SectorsPerFAT_H)
|
||
LD H,A
|
||
EX DE,HL
|
||
LD HL,(CORE_BUFFERS.FatBuffer.SectorsPerFAT_L)
|
||
; DE:HL = SectorsPerFAT
|
||
;
|
||
LD A,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.Number_of_FATs)
|
||
LD B,A
|
||
DEC A
|
||
JR Z,.loop_mul_end
|
||
; .Number_of_FATs * .SectorsPerFAT
|
||
.loop_mul: ADD HL,HL
|
||
EX DE,HL
|
||
ADC HL,HL
|
||
EX DE,HL
|
||
DJNZ .loop_mul
|
||
.loop_mul_end: ; .DirSizeInSectors + .Number_of_FATs * .SectorsPerFAT
|
||
LD B,0
|
||
LD A,(CORE_BUFFERS.FatBuffer.DirSizeInSectors)
|
||
LD C,A
|
||
ADD HL,BC
|
||
JR NC,.no_inc_DE
|
||
INC DE
|
||
.no_inc_DE: ; .RESERVED_SECTORS + .DirSizeInSectors + .Number_of_FATs * .SectorsPerFAT
|
||
LD BC,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.RESERVED_SECTORS)
|
||
ADD HL,BC
|
||
JR NC,.no_inc_de
|
||
INC DE
|
||
.no_inc_de: ; Total_Sectors - (.RESERVED_SECTORS + .DirSizeInSectors + .Number_of_FATs * .SectorsPerFAT)
|
||
AND A
|
||
LD B,D
|
||
LD C,E
|
||
POP DE ; Total Sectors low
|
||
EX DE,HL
|
||
SBC HL,DE
|
||
EX (SP),HL ; Total Sectors high
|
||
SBC HL,BC
|
||
POP DE ; Total Sectors low
|
||
; HL:DE = DataSec
|
||
;
|
||
LD A,(CORE_BUFFERS.FatBuffer.SectorsPerCluster)
|
||
; HL:DE / A => DE:BC, H=0, L - ®áâ ⮪
|
||
CALL DIV_for_SPC
|
||
; ¢ëïá塞 à §à冷áâì FAT
|
||
LD A,D
|
||
OR E
|
||
JR NZ,.its_FAT32
|
||
;
|
||
LD HL,4084
|
||
SBC HL,BC
|
||
JR NC,.its_FAT12
|
||
;
|
||
LD HL,65525
|
||
SBC HL,BC
|
||
JR C,.its_FAT32
|
||
;
|
||
; It's FAT16
|
||
LD HL,#FFFF
|
||
LD A,FAT_TYPE.x16
|
||
.Set_SN: EXX
|
||
LD HL,0
|
||
LD (CORE_BUFFERS.FatBuffer.END_CHAIN_CLUSTER_H),HL
|
||
LD (CORE_BUFFERS.FatBuffer.RootDirStartCluster_L),HL
|
||
LD HL,CORE_BUFFERS.SECBUF + BOOT_SECTOR.FAT.LABEL
|
||
EXX
|
||
LD DE,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.FAT.SERIAL_NUMBER)
|
||
LD BC,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.FAT.SERIAL_NUMBER+2)
|
||
JR .BPB_FAT
|
||
;
|
||
.its_FAT12: LD HL,#0FFF
|
||
LD A,FAT_TYPE.x12
|
||
JR .Set_SN
|
||
;
|
||
.its_FAT32: EXX
|
||
LD HL,CORE_BUFFERS.SECBUF + BOOT_SECTOR.FAT32.LABEL
|
||
EXX
|
||
;
|
||
LD HL,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.RootDirStartCluster)
|
||
LD (CORE_BUFFERS.FatBuffer.RootDirStartCluster_L),HL
|
||
LD BC,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.RootDirStartCluster+2)
|
||
LD (CORE_BUFFERS.FatBuffer.RootDirStartCluster_H),BC
|
||
CALL ClusterToSector
|
||
LD (CORE_BUFFERS.FatBuffer.RootDirFirstSector_L),HL
|
||
LD (CORE_BUFFERS.FatBuffer.RootDirFirstSector_H),BC
|
||
;
|
||
LD A,FAT_TYPE.x32
|
||
LD HL,#0FFF
|
||
LD (CORE_BUFFERS.FatBuffer.END_CHAIN_CLUSTER_H),HL
|
||
LD H,L
|
||
LD DE,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.FAT32.SERIAL_NUMBER)
|
||
LD BC,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.FAT32.SERIAL_NUMBER+2)
|
||
;
|
||
.BPB_FAT: LD (CORE_BUFFERS.FatBuffer.FAT_TYPE),A
|
||
LD (CORE_BUFFERS.FatBuffer.END_CHAIN_CLUSTER_L),HL
|
||
LD (CORE_BUFFERS.FatBuffer.BPB_SERIAL_NUMBER),DE
|
||
LD (CORE_BUFFERS.FatBuffer.BPB_SERIAL_NUMBER+2),BC
|
||
EXX
|
||
LD DE,CORE_BUFFERS.FatBuffer.BPB_LABEL
|
||
LD BC,11 ;!HARDCODE
|
||
LDIR
|
||
;
|
||
|
||
SET_PAGE_X FATPAGE
|
||
|
||
PUSH AF
|
||
LD DE,0
|
||
CALL READ_FAT_TABLE
|
||
POP AF
|
||
OUT (SLOT3),A
|
||
CALL R_CLUST
|
||
XOR A
|
||
RET
|
||
;!TODO detect fat type by clusters!
|
||
.IBM_DOS: LD A,(CORE_BUFFERS.SECBUF + BOOT_SECTOR.DRIVE_TYPE)
|
||
CP #F0
|
||
JR C,DOS_X_Error.UnknownBPB
|
||
; ID ram-¤¨áª - #FA
|
||
CP #F8 ; !FIXIT fat. ¥ ®¡ï§ â¥«ì® ¥á«¨ ¢¨â, â® ¥ FAT12
|
||
LD A,'2'
|
||
LD HL,#0FFF
|
||
JP NZ,.BPB_FAT
|
||
;
|
||
LD A,'6'
|
||
LD H,L
|
||
JP .BPB_FAT
|
||
;
|
||
|
||
; --> BC:HL - Cluster
|
||
; <-- BC:HL - Sector
|
||
ClusterToSector:
|
||
LD A,B
|
||
AND #0F
|
||
LD B,A
|
||
LD A,(CORE_BUFFERS.FatBuffer.SectorsPerCluster)
|
||
SCF
|
||
.loop: RRA
|
||
RET C
|
||
RR B
|
||
RR C
|
||
RR H
|
||
RR L
|
||
JP .loop
|
||
;
|
||
|
||
DOS_X_Error:
|
||
.UnknownBPB: LD A,DSS_Error.sys.UNKNOWN_FORMAT
|
||
SCF
|
||
RET
|
||
;
|
||
.Not_ready: LD A,DSS_Error.sys.NOT_READY
|
||
; CF = 1
|
||
RET
|
||
;
|
||
;
|
||
;!TODO ª ¡ãä¥à ¬!
|
||
/*
|
||
FatBuffer:
|
||
;.MSG: DB 'FAT'
|
||
.DRIVE: DB #FF
|
||
.FAT_TYPE: DB #00 ; TYPE FAT (12 - 12bit, 16 - 16bit, 32 - 32bit) ; [x] fat32
|
||
.CacheBlock: DW #00
|
||
.CacheUpdated: DB #00
|
||
;.SectorsPerBank: DB #00
|
||
.RootDirStartCluster_L: DW #0000
|
||
.RootDirStartCluster_H: DW #0000 ; [ ] fat32
|
||
.FAT1_SEC_L: DW #0000 ; MSD_FAT_SEC first sector FAT (FAT_FRM)
|
||
.FAT1_SEC_H: DW #0000 ; [ ] fat32
|
||
.FAT2_SEC_L: DW #0000
|
||
.FAT2_SEC_H: DW #0000 ; [ ] fat32
|
||
.SectorsPerFAT_L DW #0000
|
||
.SectorsPerFAT_H DB #00
|
||
.RootDirFirstSector_L: DW #0000 ; MSD_CAT_SEC first sector DIR
|
||
.RootDirFirstSector_H: DW #0000 ; MSD_CAT_SEC first sector DIR ; !TODO ®£à ¨ç¥¨¥ ¢ 32 ƒ¨£ ;!FIXIT ¥ ¨á¯®«ì§ã¥âáï
|
||
.DirSizeInSectors: DB #00 ; DIR_SEC_SIZE
|
||
.FirstDataSector_L: DW #0000 ; MSD_DAT_SEC low
|
||
.FirstDataSector_H: DW #0000 ; MSD_DAT_SEC high ; [ ] fat32 ¡ë«® ®£à ¨ç¥¨¥ ¢ 32 ƒ¨£
|
||
.BytesPerCluster: DW #0000 ; CLUSTER_LEN
|
||
.END_CHAIN_CLUSTER_L: DW #FFFF
|
||
.END_CHAIN_CLUSTER_H: DW #0FFF ; [ ] fat3
|
||
.MaxClusterLow: DW #0000 ; ¬ ªá. ç¨á«® ª« áâ¥à®¢ (¡¥§ á«ã¦.)
|
||
.MaxClusterHigh: DW #0000 ; ¬ ªá. ç¨á«® ª« áâ¥à®¢ (¡¥§ á«ã¦.)
|
||
;
|
||
.BytesPerSector DW #0000
|
||
.SectorsPerCluster DB #00
|
||
.BPB_SERIAL_NUMBER DW 0,0
|
||
.BPB_LABEL BLOCK 11,' ' ; 11 ¤«ï FAT, 31 ¤«ï CDFS
|
||
IF COMPILE_UNUSED_CODE
|
||
.FilesPerSector: DB #00 ; ç¨á«® ä ©«®¢ëå § ¯¨á¥© ¢ ᥪâ®à¥
|
||
.ClustersPerBank: DB #00 ; A - Clusters per bank (16k) (ç¨á«® ª« áâ¥à®¢ ¡«®ª Ž‡“) ; ????? íâ® ¨á¯®«ì§ã¥âáï?
|
||
ENDIF
|
||
;.READ_PG: DB #00 ;!TODO ¥ ¨á¯®«ì§ãîâáï ¥ª®â®àë¥ § 票ï, ® § ¤ã¬ª ¥¯«®å ï)))
|
||
;.S_X_H: DW #0000 ; ª®«¨ç¥á⢮ ᥪâ®à®¢ 樫¨¤à¥ ; ????? íâ® ¨á¯®«ì§ã¥âáï?
|
||
;
|
||
*/
|
||
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |