mirror of
https://github.com/Tolik-Trek/Estex-DSS.git
synced 2026-06-15 01:11:48 +03:00
984 lines
18 KiB
NASM
984 lines
18 KiB
NASM
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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||
; FAT 12-16
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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;[BEGIN]
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;//MODULE: FAT_X
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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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;RY01 16-11-1999 DNS ERROR READING FAT CHAIN
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;RX01 10-02-1999 DNS UPGRADE FAT CASH
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;---------------------------------------------------------------
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; “áâ ®¢¨âì ç «ìë© ª« áâ¥à ¤«ï ç⥨ï
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; [ ] fat32
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R_CLUST:
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LD HL,#0001
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LD (G_CLUST.num),HL
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RET
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.FAT32: WORD 0
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; ©â¨ ¯¥à¢ë© ᢮¡®¤ë© ª« áâ¥à
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; [ ] fat32
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G_CLUST:
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.num+1: LD HL,#0001
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.loop: INC HL ; ®¬¥à ª« áâ¥à
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; [x] fat32
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IF _FAT32_ENABLE
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LD A,(FatBuffer.FAT_TYPE)
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XOR 32
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CALL Z,SET_FAT32.CHECK_INC_HIGH_CLUSTER
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ENDIF
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;
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CALL READ_FROM_FAT ; ¯à®ç¨â âì ¨§ ª¥è FAT- ®¬¥à á«¥¤. ª« áâ¥à
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CP DSS_Error.sys.DISK_FULL
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SCF
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RET Z ; ®è¨¡ª ?
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LD A,D
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OR E
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JR NZ,.loop
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LD (G_CLUST.num),HL
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; XOR A
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RET
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; HL - CLUSTER
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; [ ] fat32
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INC_FAT:
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PUSH HL
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CALL G_CLUST
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POP DE
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RET C
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;
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PUSH HL
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; PUSH HL
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; EX DE,HL ; hl=®¬¥à ª« áâ¥à
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; .loop: CALL READ_FROM_FAT ; ¯à®ç¨â âì ¨§ ª¥è FAT- ®¬¥à á«¥¤. ª« áâ¥à
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; EX DE,HL
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; JR NC,.loop ; ¥ ª®¥æ 楯®çª¨
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EX DE,HL
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; POP DE ; ®¬¥à ª« áâ¥à
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CALL WRITE_TO_FAT ; § ¯¨á âì ¢ ª¥è FAT- ®¬¥à ª« áâ¥à
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;!FIXIT <¥â ª®âà®«ï ®è¨¡ª¨>
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;
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POP HL
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LD DE,(FatBuffer.ENDCLUS_LOW) ; ®¬¥à ª« áâ¥à
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CALL WRITE_TO_FAT ; § ¯¨á âì ¢ ª¥è FAT- ®¬¥à ª« áâ¥à
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;!TEST ;!TODO 2/12/23 ; [ ] ¡ £ á ¨§¡ëâ®ç®© § ¯¨áìî WRITE_FAT_TABLE?
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;CALL WRITE_FAT_TABLE ; ¯®¤ª«. ¡ ªã ª¥è FAT ¨ § ¯¨á âì ¥£® ¤¨áª
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;
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AND A
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RET
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;RX01
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;-----------------------------------------------------------
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; <20>à®ç¨â âì ¨§ ª¥è FAT- ®¬¥à á«¥¤. ª« áâ¥à
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; ¢å®¤: hl = ®¬¥à ª« áâ¥à
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; de = ‘’€<E28099>˜…… á«®¢® ®¬¥à ª« áâ¥à (⮫쪮 ¤«ï FAT32)
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; ¢ë室: hl = ®¬¥à ª« áâ¥à
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; de = ®¬¥à á«¥¤. ª« áâ¥à (¥á«¨ 0, â® ª« áâ¥à hl ᢮¡®¤¥)
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; CF - ª®¥æ 楯®çª¨
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;!FIXIT ¤ «¥¥ § â®çª â®, çâ® ¢ DE ¢á¥£¤ 0 - à §¤¥« ¥ ¡®«ìè¥ 2Gb
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;-----------------------------------------------------------
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;[ ] fat32
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READ_FROM_FAT:
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;[x] fat32
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PUSH DE
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LD A,(FatBuffer.FAT_TYPE)
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XOR 32
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JR NZ,.low ; Z=0 ¯à®¢¥à塞 ¬« ¤è¥¥ á«®¢® ®¬¥à ª« áâ¥à
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LD HL,(FAT_Max_Cluster_H) ; ¯à®¢¥à塞 áâ à襥 á«®¢® ®¬¥à ª« áâ¥à
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JP .high
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;
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.low: EX DE,HL
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LD HL,(FAT_Max_Cluster_L)
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.high: ; CF = 0
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SBC HL,DE
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EX DE,HL
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LD A,DSS_Error.sys.DISK_FULL
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;[x] fat32
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POP DE
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;
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RET C
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SET_PAGE_X FATPAGE
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PUSH HL
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PUSH AF
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LD A,(FatBuffer.FAT_TYPE)
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CP 16 ; fat16
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JR C,.FAT12
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JR NZ,.FAT32
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; fat16, ¯à®áâ® ç¨â âì á«¥¤. ®¬¥à
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.FAT16: CALL GET_FAT16_CELL
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LD E,(HL) ; ¯à®ç¨â âì ®¬¥à ª« áâ¥à
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INC HL
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LD D,(HL)
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POP AF
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OUT (SLOT3),A
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;!TODO #FFF7 - ª« áâ¥à á ª®áïç묨 ᥪâ®à ¬¨
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LD HL,#FFEF ;!HARDCODE
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XOR A ; DssErr.sys.NO_ERROR
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SBC HL,DE ; ¯à®¢¥àª á«ã¦. ª« áâ¥àë
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POP HL
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RET
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;
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.FAT12: CALL GET_FAT12_CELL
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LD E,(HL)
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INC HL
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LD D,(HL)
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JR C,.Correct_1
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LD A,D
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AND #0F
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LD D,A
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JR .Correct_2
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;
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.Correct_1:
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LD A,E
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AND #F0
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DUP 4 ; ¢¯à ¢® 4 ¡¨âa
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RR D
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RRA
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EDUP
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LD E,A
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.Correct_2:
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POP AF
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OUT (SLOT3),A
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LD HL,#0FEF
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XOR A ; ®¡ã«ï¥¬ CF ¨ ãáâ ¢«¨¢ ¥¬ ª®¤ ®è¨¡ª¨ = ã«î
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SBC HL,DE ; ¯à®¢¥àª á«ã¦. ª« áâ¥àë
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POP HL
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RET
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.FAT32: ; [ ] fat32
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CALL GET_FAT32_CELL
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DI
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HALT
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;-----------------------------------------------------------
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; ‡ ¯¨á âì ¢ ª¥è FAT- ®¬¥à ª« áâ¥à
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; ¢å®¤: hl = ®¬¥à ª« áâ¥à ¢ ª®â®àë© § ¯¨á âì
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; de = ®¬¥à ª« áâ¥à ª®â®àë© ¢¯¨á âì
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; ¢ë室: â ª®© ¦¥ ª ª ¨ ¢å®¤
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;-----------------------------------------------------------
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; [ ] fat32
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WRITE_TO_FAT:
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PUSH DE
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EX DE,HL
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LD HL,(FAT_Max_Cluster_L)
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AND A
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SBC HL,DE
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EX DE,HL
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POP DE
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LD A,DSS_Error.sys.DISK_FULL
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RET C
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EXX
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SET_PAGE_X FATPAGE
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EXX
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PUSH HL
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PUSH AF
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; [x] 2/12/23 FAT ¥ ¢á¥£¤ ¬®£ § ¯¨á âìáï HDD
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;LD A,1
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;LD (FatCache.Update),A
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;
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LD A,(FatBuffer.FAT_TYPE)
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CP 16 ; fat16
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JR C,.FAT12
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JR NZ,.FAT32
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;
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.FAT16: PUSH DE
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CALL GET_FAT16_CELL
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POP DE
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LD (HL),E ; á®åà. ¢ ª¥è¥ FAT-
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INC HL ; ®¬¥à ª« áâ¥à
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LD (HL),D
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POP AF ; ¢®ááâ. ¯®àâ
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POP HL
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OUT (SLOT3),A
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; [x] 2/12/23 FAT ¥ ¢á¥£¤ ¬®£ § ¯¨á âìáï HDD
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XOR A
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INC A
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LD (FatCache.Update),A
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; CF = 0
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RET
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;
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.FAT12: ;!FIXIT ¯¥à¥¤¥« âì ¯¥à¥¬¥ë¥ FAT_CACHE
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PUSH DE
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CALL GET_FAT12_CELL
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POP DE
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JR C,.Correct_1 ; ®¬¥à ¥çñâë©
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LD (HL),E
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INC HL
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LD A,(HL)
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AND #F0
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OR D
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LD (HL),A
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POP AF
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POP HL
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OUT (SLOT3),A
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; [x] 2/12/23 FAT ¥ ¢á¥£¤ ¬®£ § ¯¨á âìáï HDD
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XOR A
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INC A
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LD (FatCache.Update),A
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; CF = 0
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RET
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.Correct_1:
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; ¢«¥¢® 4 ¡¨âa
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EX DE,HL
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ADD HL,HL
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ADD HL,HL
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ADD HL,HL
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ADD HL,HL
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EX DE,HL
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;
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LD A,(HL)
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AND #0F
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OR E
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LD (HL),A ; á®åà. ¢ ª¥è¥ FAT-
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INC HL ; ®¬¥à ª« áâ¥à
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LD (HL),D
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POP AF
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POP HL
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OUT (SLOT3),A
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; [x] 2/12/23 FAT ¥ ¢á¥£¤ ¬®£ § ¯¨á âìáï HDD
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XOR A
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INC A
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LD (FatCache.Update),A
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; LD A,1
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; LD (FatCache.Update),A
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; AND A
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; CF = 0
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RET
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.FAT32: ; [ ] fat32
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DI
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HALT
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;RX01
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;RE_FAT:
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; <20>à®ç¨â âì ¢ ª¥è 16 ᥪâ®à®¢ FAT-
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; A - NEW FAT BLOCK
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READ_FAT_TABLE:
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PUSH HL
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PUSH AF
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LD A,(FatCache.Update)
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OR A
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CALL NZ,WRITE_FAT_TABLE.Start
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POP AF
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LD L,A
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XOR A
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LD H,A ;!FIXIT fat32 - ã ä â32 ¡«®ª®¢ ¬®¦¥â ¡ëâì ¢ «®¬
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LD (FatCache.Block),HL
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LD (FatCache.Update),A
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;FAT BLOCK ^ FAT_CACHE.Degree = SECTOR OF FAT
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DUP FAT_CACHE.Degree_16
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ADD HL,HL ;x2
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EDUP
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LD DE,(FatBuffer.FAT_FRM)
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ADD HL,DE
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EX DE,HL
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;
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LD XH,D
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LD XL,E
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;LD IX,0
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;ADD IX,DE ; ®¬¥à «®£. ᥪâ®à
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;
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LD HL,0 ; áâ. à §àï¤ ; HL:IX - SECTOR FAT FOR READING
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LD DE,FATPAGE.cache ; ªã¤ ; DE - FAT ADDRESS
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LD A,(FatBuffer.DRIVE) ; ®¬¥à ¤¨áª
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LD BC,FAT_CACHE.Sectors*256 + Dss.DRV.Read ;ॣ B * FAT_CACHE.Sector_Size = CASH SIZE
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RST ToDSS.DRV
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POP HL
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RET
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; <20>®¤ª«îç¨âì ¡ ªã ª¥è FAT ¨ § ¯¨á âì ¥£® ¤¨áª
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WRITE_FAT_TABLE:
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SET_PAGE_X FATPAGE
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PUSH AF
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CALL .Start ;!TODO ¥â ª®âà®«ï ®è¨¡®ª
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POP AF
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OUT (SLOT3),A
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RET
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; ‡ ¯¨áì ª¥è FAT- ¤¨áª
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.Start: LD HL,(FatCache.Block)
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;
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;LD H,0
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;FAT BLOCK * 16 = SECTOR OF FAT
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DUP FAT_CACHE.Degree_16
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ADD HL,HL ;x2
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EDUP
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; HL - ®¬¥à «®£. ᥪâ®à
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PUSH HL
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LD B,H
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LD C,L ;BC - BLOCK OF FAT
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LD DE,FAT_CACHE.Sectors
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ADD HL,DE ;+ SIZE CASH (16 SECTORS)
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LD A,E ;!HARDCODE ; MAX ç¨á«® ᥪâ®à®¢ ¤«ï çâ¥¨ï ¢ ªíè
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LD DE,(CORE_BUFFERS.BootSector.S_P_F) ; ᥪâ®à®¢ FAT
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AND A
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SBC HL,DE
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JR C,.WALLFAT
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EX DE,HL
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LD HL,FAT_CACHE.Sectors
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; CF = 0
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SBC HL,DE
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JR C,.ERR
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LD A,L
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.WALLFAT:; !TODO çñ¡ áà §ã ¢ IX ¥ £à㧨âì FAT_FRM?
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LD H,B
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LD L,C
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LD DE,(FatBuffer.FAT_FRM)
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ADD HL,DE
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EX DE,HL
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;
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LD XH,D
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LD XL,E
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;LD IX,0
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;ADD IX,DE ; ®¬¥à «®£. ᥪâ®à
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;
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LD HL,0 ; áâ. à §àï¤
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;HL:IX - SECTOR OF FAT FOR SAVE
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LD DE,FATPAGE.cache ; ®âªã¤
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LD B,A ; ç¨á«® ᥪâ®à®¢
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LD C,Dss.DRV.Write ; § ¯¨áì ᥪâ®à®¢
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LD A,(FatBuffer.DRIVE) ; ®¬¥à ¤¨áª
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PUSH BC
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RST ToDSS.DRV
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POP BC ; b=ç¨á«® ᥪâ®à®¢
|
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POP HL
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LD DE,(FatBuffer.FAT2_XX)
|
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ADD HL,DE
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EX DE,HL
|
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LD XH,D
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LD XL,E
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;
|
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LD HL,0
|
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; CF = ADD HL,DE
|
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; [ ] fat32 - ¢â®à ï â ¡«¨æ ä â ¬®¦¥â ¦¥ ã¥å âì ¤ «ìè¥ 16-¡¨â «®£¨ç¥áª®£® ᥪâ®à ?
|
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IF _FAT32_ENABLE
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RL L
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ENDIF
|
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;
|
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LD DE,FATPAGE.cache
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LD A,(FatBuffer.DRIVE)
|
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LD C,Dss.DRV.Write
|
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RST ToDSS.DRV
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AND A ;!TODO ¥â ª®âà®«ï ®è¨¡®ª
|
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;
|
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.ERR: LD A,0
|
||
LD (FatCache.Update),A
|
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RET NC
|
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POP HL
|
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; CF = 1
|
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RET
|
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|
||
|
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;¢å®¤: HL - ®¬¥à ª« áâ¥à
|
||
;¢ë室: HL - ¤à¥á 㦮© ï祩ª¨ ¢ áâà ¨æ¥ FATPAGE
|
||
GET_FAT16_CELL:
|
||
LD A,H
|
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LD B,H
|
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;AND #0F
|
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AND FAT_CACHE.Size_Mask_16
|
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LD H,A
|
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LD A,B
|
||
; A=A/16 ; A - BLOCK FAT (1 BLOCK = 8192 BYTES)
|
||
DUP FAT_CACHE.Degree_16
|
||
RRCA
|
||
EDUP
|
||
;AND #0F
|
||
AND FAT_CACHE.Part_Mask_16
|
||
;
|
||
ADD HL,HL ; HL - FAT OFFSET (FROM CASH)
|
||
LD BC,(FatCache.Block) ; BC - BLOCK FAT IN CASH
|
||
CP C
|
||
CALL NZ,READ_FAT_TABLE ; A != C - READ NEW BLOCK FAT
|
||
LD DE,FATPAGE.cache ; ç «® ª¥è FAT-
|
||
ADD HL,DE ; ï祩ªã FAT
|
||
RET
|
||
|
||
;¢å®¤: HL - ®¬¥à ª« áâ¥à
|
||
;¢ë室: HL - ¤à¥á 㦮© ï祩ª¨ ¢ áâà ¨æ¥ FATPAGE
|
||
; CF - çñâë©/¥çñâë© ¤à¥á ª« áâ¥à
|
||
GET_FAT12_CELL:
|
||
LD D,H
|
||
LD E,L
|
||
SRL H
|
||
RR L ; ᤢ¨£ ¢¯à ¢® ç¥à¥§ CF
|
||
PUSH AF ; á®åà. ä« £
|
||
ADD HL,DE ; CLUSTER * 1.5
|
||
;
|
||
IF FAT_CACHE.Size < #2000
|
||
;!FIXIT ®¯â¨¬¨§¨à®¢ âì
|
||
LD A,H
|
||
LD B,H
|
||
;
|
||
AND #1F
|
||
;AND FAT_CACHE.Size_Mask_16
|
||
;
|
||
LD H,A
|
||
LD A,B
|
||
;
|
||
RLCA
|
||
RLCA
|
||
RLCA
|
||
;DUP FAT_CACHE.Degree_16
|
||
; RRCA
|
||
;EDUP
|
||
AND #07
|
||
;AND FAT_CACHE.Part_Mask_16
|
||
;
|
||
LD BC,(FatCache.Block) ; C - BLOCK FAT IN CASH
|
||
CP C
|
||
CALL NZ,READ_FAT_TABLE ; ¯à®ç¨â âì ¢ ª¥è 16 ᥪâ®à®¢ FAT-
|
||
ENDIF
|
||
;
|
||
LD DE,FATPAGE.cache
|
||
ADD HL,DE
|
||
POP AF
|
||
RET
|
||
|
||
|
||
; in: HL - CLUSTER
|
||
; out: HL:IX - SECTOR
|
||
NSECTOR:;[x] fat32
|
||
LD DE,(FAT_Max_Cluster_H)
|
||
DEC HL
|
||
DEC HL
|
||
LD A,(CORE_BUFFERS.BootSector.S_P_C)
|
||
XOR 1
|
||
JR Z,.skip
|
||
;
|
||
RRA
|
||
.loop: ADD HL,HL
|
||
RL E
|
||
RL D
|
||
;
|
||
RRA
|
||
JP NC,.loop
|
||
;
|
||
.skip: EX DE,HL
|
||
LD XL,E
|
||
LD XH,D
|
||
LD DE,(FatBuffer.DAT_FRL) ;first data sector
|
||
XOR A
|
||
ADD IX,DE
|
||
LD D,A
|
||
LD E,A
|
||
ADC HL,DE
|
||
;!TODO ¤® «¨ ¯à®¢¥àïâì ¯¥à¥¯®«¥¨¥ HL:IX?
|
||
RET
|
||
|
||
////////////////////////////////////////////////////////////////////////
|
||
;[ ] fat32
|
||
;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
MACRO _GetSavedCluster exit_to
|
||
LD E,(IY+_sFM.KnownCluster_L)
|
||
LD D,(IY+_sFM.KnownCluster_L+1)
|
||
LD A,D
|
||
INC B
|
||
OR E
|
||
JR Z,exit_to
|
||
DEC B
|
||
;
|
||
PUSH DE
|
||
PUSH HL
|
||
PUSH BC
|
||
LD E,(IY+_sFM.KnownOffset_L)
|
||
LD D,(IY+_sFM.KnownOffset_L+1)
|
||
LD A,D
|
||
OR E
|
||
JR Z,.noOptimization_1
|
||
;
|
||
POP HL
|
||
SBC HL,DE
|
||
JR C,.noOptimization_2
|
||
;
|
||
LD C,L
|
||
LD B,H
|
||
POP DE
|
||
POP HL
|
||
;
|
||
INC B
|
||
JP exit_to
|
||
.noOptimization_1:
|
||
POP BC
|
||
.noOptimization_2:
|
||
POP HL
|
||
POP DE
|
||
INC B
|
||
JP exit_to
|
||
ENDM
|
||
;
|
||
;[ ] fat32
|
||
;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
MACRO _SaveGetedCluster
|
||
LD (IY+_sFM.KnownCluster_L),L
|
||
LD (IY+_sFM.KnownCluster_L+1),H
|
||
POP BC
|
||
LD (IY+_sFM.KnownOffset_L),C
|
||
LD (IY+_sFM.KnownOffset_L+1),B
|
||
ENDM
|
||
;;
|
||
|
||
BLOCK_READ.ECL2:
|
||
;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
POP BC
|
||
;
|
||
POP BC
|
||
POP DE
|
||
AND A
|
||
RET
|
||
;
|
||
;READ SECTORS OF FILE
|
||
;HL:DE - FP (in sectors)
|
||
; B - Amount sectors
|
||
BLOCK_READ:
|
||
PUSH BC
|
||
LD (READ.PointerOnBuffer),IX
|
||
LD A,(CORE_BUFFERS.BootSector.S_P_C) ;SECTORS PER CLUSTER
|
||
LD C,A
|
||
LD B,0
|
||
;HL:DE / BC => DE:IX HL-OSTATOK
|
||
CALL DIV_for_SPC
|
||
; [ ] fat32. ¤ «¥¥ § â®çª â®, çâ® ¢ DE ¢á¥£¤ 0 - ä ©« ¥ ¡®«ìè¥ 2Gb
|
||
LD B,XH
|
||
LD C,XL
|
||
PUSH HL ;RESIDUE
|
||
LD L,(IY+_sFM.FS_REC.FIRST_CLUSTER_L) ;START CLUSTER
|
||
LD H,(IY+_sFM.FS_REC.FIRST_CLUSTER_L+1)
|
||
LD A,H
|
||
OR L
|
||
;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
;JR NZ,BLOKRD2
|
||
PUSH BC
|
||
JR Z,.ECL2
|
||
;JP ECL2 ;RY01 JR BLOKRD0
|
||
_GetSavedCluster .enter_loop1
|
||
;
|
||
.loop1: PUSH BC
|
||
CALL READ_FROM_FAT
|
||
POP BC
|
||
JR C,.ECL2 ;RY01
|
||
EX DE,HL
|
||
; DEC BC
|
||
.enter_loop1:
|
||
; LD A,B ; ‚‘ - ᬥ饨¥ ¢ãâà¨ ä ©« ¢ ª« áâ¥à å
|
||
; OR C
|
||
; JR NZ,.loop1
|
||
INC B
|
||
DEC BC
|
||
DJNZ .loop1
|
||
;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
_SaveGetedCluster
|
||
;
|
||
POP DE
|
||
POP BC
|
||
LD A,(CORE_BUFFERS.BootSector.S_P_C)
|
||
SUB E
|
||
LD C,A ;\
|
||
CP B ; \
|
||
JR C,.skip1 ;SIZE > RESIDUE CLUSTER ; \
|
||
LD C,B ;SIZE < CLUSTER ;->-|--> ; !TODO à §®¡à âìáï
|
||
.skip1: LD A,B ; /
|
||
SUB C ; /
|
||
LD B,A ;/
|
||
PUSH HL
|
||
PUSH BC
|
||
PUSH DE
|
||
CALL NSECTOR
|
||
POP DE
|
||
ADD IX,DE
|
||
JR NC,.skip2
|
||
INC HL
|
||
.skip2: LD DE,(READ.PointerOnBuffer)
|
||
LD A,(FatBuffer.DRIVE)
|
||
LD B,C
|
||
LD C,Dss.DRV.Read
|
||
RST ToDSS.DRV
|
||
JR C,.Error
|
||
POP BC
|
||
LD HL,(READ.PointerOnBuffer)
|
||
LD DE,(CORE_BUFFERS.BootSector.B_P_S)
|
||
;!TEST
|
||
LD A,B
|
||
LD B,C
|
||
.loop2: ADD HL,DE
|
||
;DEC C
|
||
;JR NZ,.loop2
|
||
DJNZ .loop2
|
||
LD (READ.PointerOnBuffer),HL
|
||
POP DE
|
||
;LD A,B
|
||
OR A
|
||
RET Z
|
||
LD B,A
|
||
;
|
||
.loop4: LD HL,CORE_BUFFERS.BootSector.S_P_C
|
||
LD A,B
|
||
SUB (HL)
|
||
LD B,A
|
||
LD C,(HL)
|
||
JR NC,.BLOKRD7
|
||
LD B,0
|
||
ADD A,(HL) ;0 AND CF
|
||
LD C,A
|
||
OR A ;CLEAR CF
|
||
RET Z
|
||
.BLOKRD7:
|
||
EX DE,HL
|
||
PUSH BC
|
||
CALL READ_FROM_FAT
|
||
POP BC
|
||
JR C,.ECL1 ;RY01
|
||
EX DE,HL
|
||
PUSH HL
|
||
PUSH BC
|
||
CALL NSECTOR
|
||
LD DE,(READ.PointerOnBuffer)
|
||
LD A,(FatBuffer.DRIVE)
|
||
LD B,C
|
||
LD C,Dss.DRV.Read
|
||
RST ToDSS.DRV
|
||
JR C,.Error
|
||
POP BC
|
||
LD HL,(READ.PointerOnBuffer)
|
||
LD DE,(CORE_BUFFERS.BootSector.B_P_S)
|
||
.loop3: ADD HL,DE
|
||
DEC C
|
||
JR NZ,.loop3
|
||
LD (READ.PointerOnBuffer),HL
|
||
POP DE
|
||
JP .loop4
|
||
;
|
||
.Error: POP BC
|
||
POP DE
|
||
;SCF
|
||
RET
|
||
;
|
||
.ECL1: AND A
|
||
RET
|
||
|
||
;-----------------------------------------------------------------------
|
||
; BLOK_WR.Error:
|
||
; POP BC
|
||
; ;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
; POP BC
|
||
;
|
||
; BLOK_WR.ErrorWrite:
|
||
; POP BC
|
||
; POP DE
|
||
; LD A,DSS_Error.sys.WRITE_ERROR
|
||
; SCF
|
||
; RET
|
||
;
|
||
;WRITE SECTORS OF FILE
|
||
;HL:DE - FP (in sectors), IX - data in RAM
|
||
; B - Amount sectors
|
||
BLOK_WR:
|
||
PUSH BC
|
||
LD (READ.PointerOnBuffer),IX
|
||
LD A,(CORE_BUFFERS.BootSector.S_P_C) ;SECTORS PER CLUSTER
|
||
LD C,A
|
||
LD B,0
|
||
;HL:DE / BC => DE:IX HL-OSTATOK
|
||
CALL DIV_for_SPC
|
||
; [ ] fat32. ¤ «¥¥ § â®çª â®, çâ® ¢ DE ¢á¥£¤ 0 - ä ©« ¥ ¡®«ìè¥ 2Gb
|
||
LD B,XH
|
||
LD C,XL
|
||
PUSH HL ;RESIDUE
|
||
LD L,(IY+_sFM.FS_REC.FIRST_CLUSTER_L) ;START CLUSTER
|
||
LD H,(IY+_sFM.FS_REC.FIRST_CLUSTER_L+1)
|
||
LD A,H
|
||
OR L
|
||
;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
;JR NZ,BLOKWR2
|
||
PUSH BC
|
||
JR NZ,.GetSavedCluster
|
||
;
|
||
PUSH BC
|
||
CALL G_CLUST
|
||
JP C,.Error
|
||
LD (IY+_sFM.FS_REC.FIRST_CLUSTER_L),L
|
||
LD (IY+_sFM.FS_REC.FIRST_CLUSTER_L+1),H
|
||
LD DE,(FatBuffer.ENDCLUS_LOW)
|
||
CALL WRITE_TO_FAT
|
||
PUSH HL
|
||
;!TEST ;!TODO 2/12/23 [ ] ¡ £ á ¨§¡ëâ®ç®© § ¯¨áìî WRITE_FAT_TABLE?
|
||
;CALL WRITE_FAT_TABLE ; ¯®¤ª«. ¡ ªã ª¥è FAT ¨ § ¯¨á âì ¥£® ¤¨áª
|
||
;
|
||
POP HL
|
||
POP BC
|
||
INC B
|
||
JP .WR2
|
||
;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
.GetSavedCluster:
|
||
_GetSavedCluster .WR2
|
||
;
|
||
.loop: PUSH BC
|
||
CALL READ_FROM_FAT
|
||
JR NC,.WRB
|
||
PUSH HL
|
||
CALL INC_FAT
|
||
POP HL
|
||
JP C,.Error
|
||
CALL READ_FROM_FAT
|
||
.WRB: POP BC
|
||
EX DE,HL
|
||
; DEC BC
|
||
.WR2:
|
||
; LD A,B
|
||
; OR C
|
||
; JR NZ,.loop
|
||
INC B
|
||
DEC BC
|
||
DJNZ .loop
|
||
|
||
;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
_SaveGetedCluster
|
||
;
|
||
POP DE
|
||
POP BC
|
||
LD A,(CORE_BUFFERS.BootSector.S_P_C)
|
||
SUB E
|
||
LD C,A
|
||
CP B
|
||
JR C,.WR3 ;SIZE > RESIDUE CLUSTER
|
||
LD C,B ;SIZE < CLUSTER
|
||
.WR3: LD A,B
|
||
SUB C
|
||
LD B,A
|
||
PUSH HL
|
||
PUSH BC
|
||
PUSH DE
|
||
CALL NSECTOR
|
||
POP DE
|
||
ADD IX,DE
|
||
JR NC,.WR4
|
||
INC HL
|
||
; DOUBLE 1
|
||
.WR4: LD DE,(READ.PointerOnBuffer)
|
||
LD A,(FatBuffer.DRIVE)
|
||
LD B,C
|
||
LD C,Dss.DRV.Write
|
||
RST ToDSS.DRV
|
||
JR C,.ErrorWrite
|
||
POP BC
|
||
LD HL,(READ.PointerOnBuffer)
|
||
LD DE,(CORE_BUFFERS.BootSector.B_P_S)
|
||
;
|
||
.loop2: ADD HL,DE
|
||
DEC C
|
||
JR NZ,.loop2
|
||
;
|
||
LD (READ.PointerOnBuffer),HL
|
||
POP DE
|
||
;
|
||
LD A,B
|
||
OR A
|
||
RET Z
|
||
;
|
||
.big_loop:
|
||
LD HL,CORE_BUFFERS.BootSector.S_P_C
|
||
LD A,B
|
||
SUB (HL)
|
||
LD B,A
|
||
LD C,(HL)
|
||
JR NC,.WR7
|
||
LD B,0
|
||
ADD A,(HL) ;0 AND CF
|
||
LD C,A
|
||
OR A ;CLEAR CF
|
||
RET Z
|
||
.WR7: EX DE,HL
|
||
PUSH BC
|
||
CALL READ_FROM_FAT
|
||
JR NC,.WR9
|
||
PUSH HL
|
||
CALL INC_FAT
|
||
POP HL
|
||
JR C,.ErrorFull
|
||
CALL READ_FROM_FAT
|
||
.WR9: POP BC
|
||
EX DE,HL
|
||
PUSH HL
|
||
PUSH BC
|
||
CALL NSECTOR
|
||
; DOUBLE 1
|
||
LD DE,(READ.PointerOnBuffer)
|
||
LD A,(FatBuffer.DRIVE)
|
||
LD B,C
|
||
LD C,Dss.DRV.Write
|
||
RST ToDSS.DRV
|
||
JR C,.ErrorWrite
|
||
POP BC
|
||
LD HL,(READ.PointerOnBuffer)
|
||
LD DE,(CORE_BUFFERS.BootSector.B_P_S)
|
||
.loop3: ADD HL,DE
|
||
DEC C
|
||
JR NZ,.loop3
|
||
LD (READ.PointerOnBuffer),HL
|
||
POP DE
|
||
;
|
||
JP .big_loop
|
||
;
|
||
.Error: POP BC
|
||
POP BC ;[x] GET/SAVE CLUSTER NUMBER BEFORE/AFTER READ/WRITE
|
||
.ErrorWrite:
|
||
POP BC
|
||
POP DE
|
||
LD A,DSS_Error.sys.WRITE_ERROR
|
||
;SCF
|
||
RET
|
||
;
|
||
.ErrorFull:
|
||
POP BC
|
||
LD A,DSS_Error.sys.DISK_FULL
|
||
;SCF
|
||
RET
|
||
////////////////////////////////////////////////////////////////////////
|
||
|
||
|
||
FatCache: ;WORD #0000
|
||
.Block WORD #0000 ;EQU FatCache
|
||
.Update BYTE 0 ;EQU FatCache+1
|
||
FAT_Max_Cluster_L: WORD #0FF0 ; ¬ ªá. ç¨á«® ª« áâ¥à®¢ (¡¥§ á«ã¦.)
|
||
FAT_Max_Cluster_H: WORD #0000 ; ¬ ªá. ç¨á«® ª« áâ¥à®¢ (¡¥§ á«ã¦.)
|
||
|
||
;//MODULE: FAT_X
|
||
;[END]
|
||
|
||
|
||
;RX01
|
||
;; HL - CLUSTER
|
||
;; DE - (CLUSTER)
|
||
;
|
||
;READ_FROM_FAT EX DE,HL
|
||
; LD HL,(FAT_Max_Cluster)
|
||
; AND A
|
||
; SBC HL,DE
|
||
; EX DE,HL
|
||
; LD A,10
|
||
; RET C
|
||
; PUSH HL
|
||
; LD A,(FAT_TYP)
|
||
; CP "2"
|
||
; JP Z,R_F_F12
|
||
;R_F_F16 LD DE,768 ; DE - CLUSTERS IN CASH
|
||
; XOR A
|
||
;R_F_00H INC A ; HL - CLUSTER
|
||
; SBC HL,DE
|
||
; JP NC,R_F_00H
|
||
; ADD HL,DE
|
||
; ADD HL,HL ; HL - FAT OFFSET (FROM CASH)
|
||
; DEC A
|
||
; LD BC,(FatCache) ; A - ELEMENT OF CASH
|
||
; CP C
|
||
; CALL NZ,READ_FAT_TABLE
|
||
; LD DE,FAT
|
||
; ADD HL,DE
|
||
; LD E,(HL)
|
||
; INC HL
|
||
; LD D,(HL)
|
||
; LD HL,#FFEF
|
||
; AND A
|
||
; SBC HL,DE
|
||
; POP HL
|
||
; LD A,0
|
||
; RET
|
||
;
|
||
;R_F_F12 LD D,H
|
||
; LD E,L
|
||
; ADD HL,HL
|
||
; ADD HL,DE
|
||
; RR H
|
||
; RR L
|
||
; PUSH AF
|
||
; EX DE,HL
|
||
; LD HL,(B_P_S)
|
||
; LD B,H
|
||
; LD C,L
|
||
; ADD HL,HL
|
||
; ADD HL,BC
|
||
; EX DE,HL
|
||
; XOR A ; DE - SIZE SECTOR * 3
|
||
;R_F_00 INC A ; HL - FAT OFFSET
|
||
; SBC HL,DE
|
||
; JP NC,R_F_00
|
||
; ADD HL,DE
|
||
; DEC A
|
||
;
|
||
;
|
||
|
||
;WRITE_FAT_TABLE LD HL,(FatCache)
|
||
; LD H,0
|
||
; LD (FatCache),HL
|
||
; LD E,L
|
||
; LD D,H
|
||
; ADD HL,HL
|
||
; ADD HL,DE
|
||
; PUSH HL
|
||
; LD B,H
|
||
; LD C,L
|
||
; INC HL
|
||
; INC HL
|
||
; INC HL
|
||
; LD DE,(S_P_F)
|
||
; LD A,3
|
||
; AND A
|
||
; SBC HL,DE
|
||
; JP C,WR_FAT1
|
||
; EX DE,HL
|
||
; LD HL,3
|
||
; AND A
|
||
; SBC HL,DE
|
||
; JP C,FATERR
|
||
; LD A,L
|
||
;WR_FAT1 LD H,B
|
||
; LD L,C
|
||
; LD DE,(FAT_FRM)
|
||
; ADD HL,DE
|
||
; EX DE,HL
|
||
; LD IX,0
|
||
; ADD IX,DE
|
||
; LD DE,FAT
|
||
; LD HL,0
|
||
; LD B,A
|
||
; LD C,6
|
||
; LD A,(DRIVE)
|
||
; PUSH BC
|
||
; RST #18
|
||
; POP BC
|
||
; POP HL
|
||
; LD DE,(FAT2_XX)
|
||
; ADD HL,DE
|
||
; EX DE,HL
|
||
; LD IX,0
|
||
; ADD IX,DE
|
||
; LD DE,FAT
|
||
; LD HL,0
|
||
; LD A,(DRIVE)
|
||
; LD C,6
|
||
; RST #18
|
||
; RET
|
||
|
||
|
||
////////////// OLD ////////////////
|
||
; HL - CLUSTER
|
||
; HL:IX - SECTOR
|
||
; NSECTOR: DEC HL
|
||
; DEC HL
|
||
; EX DE,HL
|
||
; LD A,(CORE_BUFFERS.BootSector.S_P_C)
|
||
; LD B,A
|
||
; LD HL,0
|
||
; LD IX,0
|
||
; ADD_DE1: ADD IX,DE
|
||
; JR NC,ADD_DE2
|
||
; INC HL
|
||
; ADD_DE2: DJNZ ADD_DE1
|
||
; LD DE,(FatBuffer.DAT_FRL) ;first data sector
|
||
; ADD IX,DE
|
||
; LD DE,#0000
|
||
; ADC HL,DE
|
||
; RET
|
||
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// |