mirror of
https://github.com/Tolik-Trek/Estex-DSS.git
synced 2026-06-15 09:21:47 +03:00
853 lines
17 KiB
NASM
853 lines
17 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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;RX01 10-02-1999 DNS UPGRADE FAT CASH
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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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CALL SEARCH.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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;[x] 9/11/23 ®¯â¨¬¨§ æ¨ï ¤«ï ¨¤¥ªá § ¯¨á¨ ¢ ᯨ᪥ ª â «®£ (¢®§¬®¦® ¯® ¤®¡¨âáï ¢¥àãâì)
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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+00)
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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+11)
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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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;[x] 9/11/23 ®¯â¨¬¨§ æ¨ï ¤«ï ¨¤¥ªá § ¯¨á¨ ¢ ᯨ᪥ ª â «®£ (¢®§¬®¦® ¯® ¤®¡¨âáï ¢¥àãâì)
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EXX
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; LD D,XH
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; LD E,XL
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PUSH IX
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EXX
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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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;[x] 9/11/23 ®¯â¨¬¨§ æ¨ï ¤«ï ¨¤¥ªá § ¯¨á¨ ¢ ᯨ᪥ ª â «®£ (¢®§¬®¦® ¯® ¤®¡¨âáï 㤠«¨âì)
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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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;[x] 9/11/23 ®¯â¨¬¨§ æ¨ï ¤«ï ¨¤¥ªá § ¯¨á¨ ¢ ᯨ᪥ ª â «®£ (¢®§¬®¦® ¯® ¤®¡¨âáï ¢¥àãâì)
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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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;POP AF
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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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;POP AF
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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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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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.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_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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;----------------------------------------------------------------------;
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; <20>à®ç¨â âì ᯨ᮪ ª â «®£
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LOADDIR:
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XOR A
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LD H,A
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LD L,A
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LD IX,0
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LD B,A ; ®â ç « ä ©«
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CALL MOVE_FP
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SET_PAGE_X DIRPAGE
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AND A
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PUSH AF
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;!TEST no ldir
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; ®ç¨áâ¨âì ª¥è ª â «®£
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; LD HL,#C000
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; LD DE,#C001
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; LD BC,#3FFF
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; LD (HL),L
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; LDIR
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;
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LD A,(FatBuffer.DRIVE) ; ®¬¥à ¤¨áª
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LD (IY+_sFM.DRIVE),A ; á®åà. ¢ ¤¥áªà¨¯â®à
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; ®¬¥à ¯¥à¢®£® ª« áâ¥à
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; [ ] fat32
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LD A,(IY+_sFM.FS_REC.FIRST_CLUSTER_L)
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OR (IY+_sFM.FS_REC.FIRST_CLUSTER_L+1)
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JP Z,.LROTDIR ; root ??
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;
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LD HL,DIRPAGE.buffer ; ªã¤
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LD DE,#4000 ; ᪮«ìª®
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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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.LROTDIR:
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LD HL,(FatBuffer.DIR_FRH) ; áâ. à §àï¤
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LD IX,(FatBuffer.DIR_FRL) ; ®¬¥à «®£. ᥪâ®à
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LD A,(FatBuffer.DIR_S_S)
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LD B,32 ; !HARDCODE 16384/(sector 512). à §¬¥à root-ª â «®£
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CP B
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JR NC,.RTD1
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LD B,A ; ç¨á«® ᥪâ®à®¢
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.RTD1: LD A,(FatBuffer.DRIVE) ; ®¬¥à ¤¨áª
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LD DE,DIRPAGE.buffer ; ¡ãä¥à
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LD C,Dss.DRV.Read ; ç⥨¥ ᥪâ®à®¢
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RST ToDSS.DRV
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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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;----------------------------------------------------------------------;
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; ᪮¯¨à®¢ âì § ¯¨áì ¢ ᯨ᮪ ¤¨áª (ª â «®£ )
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; ¨ á¡à®á¨âì ª¥è ª â «®£ ¤¨áª
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WRT_HND: SET_PAGE_X DIRPAGE
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EX AF,AF'
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;
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;LD IX,DIRPAGE.buffer
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LD HL,DIRPAGE.buffer
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;TEST 9/11/23
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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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LD BC,#0020
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.loop: ;LD A,(IX+00)
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LD A,(HL)
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OR A
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JR Z,.WRT_HN2
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CP #E5
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JR Z,.WRT_HN2
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;ADD IX,BC
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ADD HL,BC
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JR NC,.loop
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;
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EX AF,AF'
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OUT (SLOT3),A
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LD A,DSS_Error.sys.ROOT_OVERFLOW
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SCF
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RET
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.WRT_HN2:
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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 HL,HANDBUF
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LD BC,HANDBUF.SIZE
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LDIR
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EX AF,AF'
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OUT (SLOT3),A
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LD HL,DIRPAGE.buffer
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LD BC,(SAVEDIR.DIRSIZE)
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DEC BC
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ADD HL,BC
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AND A
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SBC HL,DE
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JR NC,SAVEDIR
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LD HL,(SAVEDIR.DIRSIZE)
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LD BC,(FatBuffer.B_P_C)
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ADD HL,BC
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LD (SAVEDIR.DIRSIZE),HL
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AND A
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JP SAVEDIR
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;----------------------------------------------------------------------;
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;!TODO FAT procedures
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;----------------------------------------------------------------------;
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; ‘¡à®á¨âì ª¥è ª â «®£ ¤¨áª.
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; ¢å®¤: iy=áâàãªâãà ¤¥áªà¨¯â®à
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SAVEDIR:
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XOR A
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LD HL,0
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LD IX,0
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LD B,0
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CALL MOVE_FP
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;
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SET_PAGE_X DIRPAGE
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PUSH AF
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;
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LD A,(FatBuffer.DRIVE)
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LD (IY+_sFM.DRIVE),A
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;[ ] fat32
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LD D,(IY+_sFM.FS_REC.FIRST_CLUSTER_L)
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LD E,(IY+_sFM.FS_REC.FIRST_CLUSTER_L+1)
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LD A,D
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OR E
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JP Z,.SROTDIR
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LD HL,DIRPAGE.buffer
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; à §¬¥à ᯨ᪠ª â «®£ size_cash_directory
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;!FIXIT ¥á«¨ ® 㦠, â® ¯à®¢¥à¨âì ¡ £¨ ( ¯à¨¬¥à, à §¬¥à ¤¨à४â®à¨¨ ¬¥ìè¥ ¯à¨ ®âªàë⨨ ¨ ¡®«ìè¥ ¯®á«¥ ¯à ¢®ª)
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.DIRSIZE+1:
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LD DE,0
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XOR A
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CALL WRITE
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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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.SROTDIR:
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LD HL,(FatBuffer.DIR_FRH)
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LD IX,(FatBuffer.DIR_FRL)
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LD A,(FatBuffer.DIR_S_S)
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LD B,32 ;!HARDCODE
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SUB B
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JR NC,.RTD1S
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ADD A,B
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LD B,A
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.RTD1S: LD A,(FatBuffer.DRIVE)
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LD DE,DIRPAGE.buffer
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LD C,Dss.DRV.Write
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RST ToDSS.DRV
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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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;----------------------------------------------------------------------;
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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; ¥ ¨á¯®«ì§ã¥âáï
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; TESTDSK: ;????? ¢®§¬®¦®, çâ® âãâ «®£¨ç¥¥, 祬 ¢ ç «¥ OPENDSK, ¥á«¨ ¡ã¤¥â à ¡®â âì Dss.DRV.Open
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; LD A,(FatBuffer.DRIVE)
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; LD C,Dss.DRV.MediaCheck
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; RST ToDSS.DRV
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; OR A
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; RET Z
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; ॣ. D - ®¬¥à ¤¨áª
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RD_BPB: LD C,SLOT3
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IN B,(C)
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PUSH BC
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IN A,(SLOT0)
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OUT (SLOT3),A
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LD A,(FatBuffer.DRIVE)
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;R08
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;LD DE,BOOT+#C000
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LD DE,CORE_BUFFERS.SECBUF+#C000
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;R08
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LD C,Dss.DRV.GetBPB
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RST ToDSS.DRV
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POP BC
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OUT (C),B
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JP C,DOS_X_Error.Not_ready
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//PUSH IY ; ¯®ª ¡¥§ ¨¤¥ªá®£®, ® ¬®¦¥â ¯à¨£®¤¨âìáï
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LD DE,#AA55 ; ᨣ âãà ;R05
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LD HL,(CORE_BUFFERS.SECBUF+_sBOOT_SECTOR.MBR_SIGNATURE) ;R08 ;R07
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;R05
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AND A
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SBC HL,DE
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JP NZ,DOS_X_Error.UnknownBPB
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;R08
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LD HL,CORE_BUFFERS.SECBUF
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LD DE,CORE_BUFFERS.BootSector
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LD BC,_sBOOT_SECTOR_PARAMS ; size
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LDIR
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;
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//LD IY,BootSector ; ¯®ª ¡¥§ ¨¤¥ªá®£®, ® ¬®¦¥â ¯à¨£®¤¨âìáï
|
||
//LD A,(IY+_sBOOT_SECTOR_PARAMS.DRIVE_TYPE)
|
||
LD A,(CORE_BUFFERS.BootSector.DRIVE_TYPE)
|
||
|
||
CP #F0
|
||
JP C,DOS_X_Error.UnknownBPB
|
||
|
||
;!TEST
|
||
;LD HL,0 ; calc. first sector FAT
|
||
;LD E,(IY+_sBOOT_SECTOR_PARAMS.RESERVED_SECTORS) ;Reserve sec
|
||
;LD D,(IY+_sBOOT_SECTOR_PARAMS.RESERVED_SECTORS+1)
|
||
;ADD HL,DE
|
||
|
||
//LD L,(IY+_sBOOT_SECTOR_PARAMS.RESERVED_SECTORS) ;Reserve sec
|
||
//LD H,(IY+_sBOOT_SECTOR_PARAMS.RESERVED_SECTORS+1)
|
||
LD HL,(CORE_BUFFERS.BootSector.RESERVED_SECTORS)
|
||
;
|
||
|
||
; LD E,(IY+_sBOOT_SECTOR_PARAMS.HIDDEN) ;Hidden sec
|
||
; LD D,(IY+_sBOOT_SECTOR_PARAMS.HIDDEN+1)
|
||
; ADD HL,DE
|
||
|
||
;LD (FatBuffer.FAT_FRM),HL ; first sector FAT
|
||
LD (FatBuffer.FAT1_SEC_L),HL ; first sector FAT #1
|
||
LD (FatBuffer.FAT2_SEC_L),HL
|
||
|
||
//LD E,(IY+_sBOOT_SECTOR_PARAMS.S_P_F) ; sectors in FAT
|
||
//LD D,(IY+_sBOOT_SECTOR_PARAMS.S_P_F+1)
|
||
LD DE,(CORE_BUFFERS.BootSector.S_P_F)
|
||
|
||
|
||
LD A,(CORE_BUFFERS.BootSector.FAT_NUM) ; amount FATs
|
||
CP 1
|
||
JR Z,.loop1
|
||
DEC A
|
||
ADD HL,DE
|
||
LD (FatBuffer.FAT2_SEC_L),HL
|
||
;C_DATA1
|
||
.loop1: ADD HL,DE
|
||
DEC A
|
||
JR NZ,.loop1
|
||
LD (FatBuffer.DIR_FRL),HL ; first sector DIR
|
||
; CF = ?  Ǩ Ǭ
|
||
AND A
|
||
; CF = 0
|
||
|
||
//LD C,(IY+_sBOOT_SECTOR_PARAMS.B_P_S) ; Size sectors
|
||
//LD B,(IY+_sBOOT_SECTOR_PARAMS.B_P_S+1)
|
||
LD BC,(CORE_BUFFERS.BootSector.B_P_S)
|
||
; RL C
|
||
; RL B
|
||
; RL C
|
||
; RL B
|
||
; RL C
|
||
; RL B
|
||
; LD C,B
|
||
; LD B,0 ; BC - File handels in sectors
|
||
; LD A,C
|
||
;;;;
|
||
LD A,B
|
||
;
|
||
RL C
|
||
RLA
|
||
;
|
||
RL C
|
||
RLA
|
||
;
|
||
RL C
|
||
RLA
|
||
;
|
||
LD C,A
|
||
LD B,0 ; BC - File handels in sectors
|
||
;;;;
|
||
LD (FatBuffer.F_P_S),A
|
||
|
||
//LD E,(IY+_sBOOT_SECTOR_PARAMS.F_P_DIR) ; Number file handel
|
||
//LD D,(IY+_sBOOT_SECTOR_PARAMS.F_P_DIR+1)
|
||
LD DE,(CORE_BUFFERS.BootSector.F_P_DIR)
|
||
|
||
EX DE,HL
|
||
DEC HL
|
||
XOR A
|
||
;NEXTAD2
|
||
.loop2: INC A
|
||
JP Z,DOS_X_Error.UnknownBPB
|
||
SBC HL,BC
|
||
JR NC,.loop2
|
||
|
||
EX DE,HL
|
||
LD C,A ; A - sectors in DIR
|
||
LD B,0
|
||
LD (FatBuffer.DIR_S_S),A
|
||
ADD HL,BC ; Start DATA area
|
||
LD (FatBuffer.DAT_FRL),HL
|
||
;!TODO ¥ ¨á¯®«ì§ãîâáï § ç¥¨ï ¢ëç¨á«ï¥¬ë¥ ¨ á®åà ï¥¬ë¥ ¢ FatBuffer
|
||
////////////////////////////////////////////////////////////////////////
|
||
;IF COMPILE_UNUSED_CODE
|
||
;LD HL,0
|
||
|
||
;LD H,B ; âãâ ¢ B ®«ì ¤®«¦¥ ¡ëâì
|
||
;LD L,B
|
||
;LD C,(IY+_sBOOT_SECTOR_PARAMS.B_P_S) ; Size sector
|
||
;LD B,(IY+_sBOOT_SECTOR_PARAMS.B_P_S+1)
|
||
|
||
//LD L,(IY+_sBOOT_SECTOR_PARAMS.B_P_S) ; Size sector
|
||
//LD H,(IY+_sBOOT_SECTOR_PARAMS.B_P_S+1)
|
||
LD HL,(CORE_BUFFERS.BootSector.B_P_S) ; Size sector
|
||
|
||
LD A,(CORE_BUFFERS.BootSector.S_P_C)
|
||
;!TODO FATcacheSize
|
||
;NEXTAD3
|
||
; .loop3: ADD HL,BC ; calc. cluster size
|
||
; DEC A
|
||
; JR NZ,.loop3
|
||
XOR 1 ; calc. cluster size
|
||
JR Z,.loop3.end
|
||
RRA
|
||
.loop3: ADD HL,HL
|
||
RRA
|
||
JP NC,.loop3
|
||
.loop3.end:
|
||
;
|
||
LD (FatBuffer.CLU_LEN),HL
|
||
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 (FatBuffer.C_P_B),A ; A - Clusters per bank (16k)
|
||
;ENDIF
|
||
////////////////////////////////////////////////////////////////////////
|
||
|
||
;!TODO detect fat type by clusters!
|
||
;[ ] fat32 reset fat32 variables
|
||
LD HL,0
|
||
LD (FatBuffer.ENDCLUS_HIGH),HL
|
||
LD (FAT_Max_Cluster_H),HL
|
||
;
|
||
LD HL,CORE_BUFFERS.BootSector.ID_FAT ;!!!!! ¥á«¨ IY ¨á¯®«ì§ã¥âáï ¤«ï ¯¥à¥¬¥®£® BootSector, â® ¡ã¤¥â ¡ £
|
||
LD DE,FatBuffer.MSG
|
||
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'
|
||
IF _FAT32_ENABLE
|
||
JP Z,.fat1x
|
||
;[ ] fat32
|
||
CP '2'
|
||
JP NZ,DOS_X_Error.UnknownBPB
|
||
LD A,#46 ; #46-#26 = 32 fat type
|
||
LD HL,#0FFF
|
||
LD (FatBuffer.ENDCLUS_HIGH),HL
|
||
LD (FAT_Max_Cluster_H),HL
|
||
LD H,#FF
|
||
JR .BPB_FAT
|
||
;
|
||
ELSE
|
||
JP NZ,DOS_X_Error.UnknownBPB
|
||
ENDIF
|
||
;
|
||
.fat1x: LD A,(HL)
|
||
CP '6' ; FAT16
|
||
LD HL,#FFFF
|
||
JR Z,.BPB_FAT
|
||
CP '2' ; FAT12
|
||
JP NZ,DOS_X_Error.UnknownBPB
|
||
LD HL,#0FFF
|
||
.BPB_FAT:
|
||
SUB #26 ; A-#26 = fat type (12, 16, 32)
|
||
LD (FatBuffer.FAT_TYPE),A
|
||
LD (FatBuffer.ENDCLUS_LOW),HL
|
||
|
||
;!TODO ¥ ¨á¯®«ì§ãîâáï § ç¥¨ï ¢ëç¨á«ï¥¬ë¥ ¨ á®åà ï¥¬ë¥ ¢ FatBuffer
|
||
////////////////////////////////////////////////////////////////////////
|
||
;IF COMPILE_UNUSED_CODE
|
||
|
||
LD HL,0
|
||
|
||
//LD C,(IY+_sBOOT_SECTOR_PARAMS.S_P_T) ; Sector per track
|
||
//LD B,(IY+_sBOOT_SECTOR_PARAMS.S_P_T+1)
|
||
LD BC,(CORE_BUFFERS.BootSector.S_P_T) ; Sector per track
|
||
|
||
LD A,(CORE_BUFFERS.BootSector.HEADS) ;!!!!! ¥á«¨ IY ¨á¯®«ì§ã¥âáï ¤«ï ¯¥à¥¬¥®£® BootSector, â® ¡ã¤¥â ¡ £
|
||
.BPB_L1: ; calc. sector per cylinder
|
||
ADD HL,BC
|
||
DEC A
|
||
JR NZ,.BPB_L1
|
||
LD (FatBuffer.S_X_H),HL
|
||
;ENDIF
|
||
////////////////////////////////////////////////////////////////////////
|
||
|
||
LD DE,(FatBuffer.DAT_FRL)
|
||
; LD E,(IY+_sBOOT_SECTOR_PARAMS.HIDDEN) ;Hidden sec
|
||
; LD D,(IY+_sBOOT_SECTOR_PARAMS.HIDDEN+1)
|
||
; AND A
|
||
; SBC HL,DE
|
||
; EX DE,HL
|
||
|
||
//LD L,(IY+_sBOOT_SECTOR_PARAMS.S_P_D)
|
||
//LD H,(IY+_sBOOT_SECTOR_PARAMS.S_P_D+1)
|
||
LD HL,(CORE_BUFFERS.BootSector.S_P_D)
|
||
|
||
LD A,H
|
||
OR L
|
||
JP NZ,.HDDSMAL
|
||
;
|
||
//LD L,(IY+_sBOOT_SECTOR_PARAMS.BPB_BIG_TOTAL_SECTORS)
|
||
//LD H,(IY+_sBOOT_SECTOR_PARAMS.BPB_BIG_TOTAL_SECTORS+1)
|
||
LD HL,(CORE_BUFFERS.BootSector.BPB_BIG_TOTAL_SECTORS_L)
|
||
|
||
//LD C,(IY+_sBOOT_SECTOR_PARAMS.BPB_BIG_TOTAL_SECTORS+2)
|
||
//LD B,(IY+_sBOOT_SECTOR_PARAMS.BPB_BIG_TOTAL_SECTORS+3)
|
||
LD BC,(CORE_BUFFERS.BootSector.BPB_BIG_TOTAL_SECTORS_H)
|
||
AND A
|
||
SBC HL,DE
|
||
JP NC,.HDDBIG
|
||
DEC BC
|
||
JP .HDDBIG
|
||
.HDDSMAL:
|
||
;AND A ;âãâ CF ¯®«î¡ á á¡à®è¥ ¤®«¦¥ ¡ëâì
|
||
SBC HL,DE
|
||
LD BC,0
|
||
.HDDBIG: LD A,(CORE_BUFFERS.BootSector.S_P_C) ;!!!!! ¥á«¨ IY ¨á¯®«ì§ã¥âáï ¤«ï ¯¥à¥¬¥®£® BootSector, â® ¡ã¤¥â ¡ £
|
||
SCF
|
||
.S4C01: RRA
|
||
JR C,.S4C02
|
||
RR B
|
||
RR C
|
||
RR H
|
||
RR L
|
||
JP .S4C01
|
||
.S4C02: INC HL
|
||
LD (FAT_Max_Cluster_L),HL
|
||
|
||
//POP IY
|
||
|
||
XOR A
|
||
LD H,A
|
||
LD L,A
|
||
LD (FatCache.Block),HL
|
||
LD (FatCache.Update),A
|
||
|
||
SET_PAGE_X FATPAGE
|
||
|
||
PUSH AF
|
||
; [ ] fat32
|
||
; XOR A
|
||
; HL = 0
|
||
EX DE,HL
|
||
;
|
||
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.BootSector.DRIVE_TYPE)
|
||
CP #F0
|
||
JR C,DOS_X_Error.UnknownBPB
|
||
; ID ram-¤¨áª - #FA
|
||
CP #F8 ; !FIXIT ¥ ®¡ï§ â¥«ì® ¥á«¨ ¢¨â, â® ¥ FAT12
|
||
LD A,'6'
|
||
LD HL,#FFFF
|
||
JP Z,.BPB_FAT
|
||
;
|
||
LD A,'2'
|
||
LD HL,#0FFF
|
||
JP .BPB_FAT
|
||
;
|
||
DOS_X_Error:
|
||
.UnknownBPB:
|
||
//POP IY
|
||
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'
|
||
.READ_PG: DB #00 ;!TODO ¥ ¨á¯®«ì§ãîâáï ¥ª®â®àë¥ § 票ï, ® § ¤ã¬ª ¥¯«®å ï)))
|
||
.BLOCK: DB #00
|
||
.DIR_CLU_L: DW #0000
|
||
.DIR_CLU_H: DW #0000 ; [ ] fat32
|
||
.DRIVE: DB #FF
|
||
.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
|
||
.DIR_FRH: DW #0000 ; MSD_CAT_SEC first sector DIR ; !TODO ®£à ¨ç¥¨¥ ¢ 32 ƒ¨£ ;!FIXIT ¥ ¨á¯®«ì§ã¥âáï
|
||
.DIR_FRL: DW #0000 ; MSD_CAT_SEC first sector DIR
|
||
.F_P_S: DB #00 ; ç¨á«® ä ©«®¢ëå § ¯¨á¥© ¢ ᥪâ®à¥
|
||
.DIR_S_S: DB #00 ; DIR_SEC_SIZE
|
||
.DAT_FRL: DW #0000 ; MSD_DAT_SEC low
|
||
.DAT_FRH: DW #0000 ; MSD_DAT_SEC high ; !TODO ®£à ¨ç¥¨¥ ¢ 32 ƒ¨£ ;!FIXIT ¥ ¨á¯®«ì§ã¥âáï
|
||
.CLU_LEN:
|
||
.B_P_C: DW #0000 ; CLUSTER_LEN
|
||
.C_P_B: DB #00 ; A - Clusters per bank (16k) (ç¨á«® ª« áâ¥à®¢ ¡«®ª Ž‡“) ; ????? íâ® ¨á¯®«ì§ã¥âáï?
|
||
.FAT_TYPE: DB #00 ; TYPE FAT (12 - 12bit, 16 - 16bit, 32 - 32bit) ; [x] fat32
|
||
.S_X_H: DW #0000 ; ª®«¨ç¥á⢮ ᥪâ®à®¢ 樫¨¤à¥ ; ????? íâ® ¨á¯®«ì§ã¥âáï?
|
||
.ENDCLUS_LOW: DW #FFFF
|
||
.ENDCLUS_HIGH: DW #FFFF ; [ ] fat32
|
||
;
|
||
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
||
;
|
||
INCLUDE "FAT12_16.ASM"
|
||
IF _FAT32_ENABLE
|
||
INCLUDE "FAT32.ASM"
|
||
ENDIF
|
||
; |