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boot.asm, dssboot.asm - поддержка записи/чтения части загрузчика в/из нулевого сектора
This commit is contained in:
Anatoliy Belyanskiy
parent
fda917aed8
commit
f2eb4e47e3
903
BOOT/DSSBOOT.ASM
903
BOOT/DSSBOOT.ASM
File diff suppressed because it is too large
Load Diff
242
BOOT/boot.asm
242
BOOT/boot.asm
@ -1,6 +1,9 @@
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////////////////////////////////////////////////////////////////////////
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; CHANGELOG
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; [ ] - ®¯à¥¤¥«¥¨¥ ¯®¯ë⪨ ᤥ« âì § £à㧮çë¬ ¥ ¯¥à¢ë© à §¤¥«
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; [x] - § £à㧪 á «î¡®£® primary active à §¤¥«
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; [x] - ¯®¤¤¥à¦ª § £à㧪¨ á FAT32 à §¤¥«
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; [x] - § £à㧪 á RAM ¤¨áª
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; [x] - bug fixes and optimizations)))
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////////////////////////////////////////////////////////////////////////
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@ -20,41 +23,41 @@
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;
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STRUCT _sysFatBuffer
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;.DRIVE: BYTE #FF
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.FAT_TYPE: BYTE #00 ; TYPE FAT (12 - 12bit, 16 - 16bit, 32 - 32bit) ; fat32
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.CacheBlock: WORD #0000
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;.CacheUpdated: BYTE #00
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;.SectorsPerBank: BYTE #00
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.FAT_TYPE: BYTE #00 ; TYPE FAT (12 - 12bit, 16 - 16bit, 32 - 32bit) ; fat32
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.CacheBlock: WORD #0000
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;.CacheUpdated: BYTE #00
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;.SectorsPerBank: BYTE #00
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;.RootDirStartCluster_L: WORD #0000
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;.RootDirStartCluster_H: WORD #0000 ; fat32
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.FAT1_SEC_L: WORD #0000 ; MSD_FAT_SEC first sector FAT (FAT_FRM)
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.FAT1_SEC_H: WORD #0000 ; fat32
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;.FAT2_SEC_L: WORD #0000
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;.FAT2_SEC_H: WORD #0000 ; fat32
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.FAT1_SEC_L: WORD #0000 ; MSD_FAT_SEC first sector FAT (FAT_FRM)
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.FAT1_SEC_H: WORD #0000 ; fat32
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;.FAT2_SEC_L: WORD #0000
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;.FAT2_SEC_H: WORD #0000 ; fat32
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;.Number_Of_FATs BYTE #02
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.SectorsPerFAT_L WORD #0000
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.SectorsPerFAT_H BYTE #00
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.RootDirFirstSector_L: WORD #0000 ; MSD_CAT_SEC first sector DIR
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.RootDirFirstSector_H: WORD #0000 ; MSD_CAT_SEC first sector DIR
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.DirSizeInSectors: BYTE #00 ; DIR_SEC_SIZE
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.FirstDataSector_L: WORD #0000 ; MSD_DAT_SEC low
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.FirstDataSector_H: WORD #0000 ; MSD_DAT_SEC high
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.BytesPerCluster: WORD #0000 ; CLUSTER_LEN
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;.END_CHAIN_CLUSTER_L: WORD #FFFF
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;.END_CHAIN_CLUSTER_H: WORD #0FFF
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.SectorsPerFAT_L WORD #0000
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.SectorsPerFAT_H BYTE #00
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.RootDirFirstSector_L: WORD #0000 ; MSD_CAT_SEC first sector DIR
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.RootDirFirstSector_H: WORD #0000 ; MSD_CAT_SEC first sector DIR
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.DirSizeInSectors: BYTE #00 ; DIR_SEC_SIZE
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.FirstDataSector_L: WORD #0000 ; MSD_DAT_SEC low
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.FirstDataSector_H: WORD #0000 ; MSD_DAT_SEC high
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.BytesPerCluster: WORD #0000 ; CLUSTER_LEN
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;.END_CHAIN_CLUSTER_L: WORD #FFFF
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;.END_CHAIN_CLUSTER_H: WORD #0FFF
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;.MaxClusterLow: WORD #0000 ; ¬ ªá. ç¨á«® ª« áâ¥à®¢ (¡¥§ á«ã¦.)
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;.MaxClusterHigh: WORD #0000 ; ¬ ªá. ç¨á«® ª« áâ¥à®¢ (¡¥§ á«ã¦.)
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;.BytesPerSector: WORD #0000
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.SectorsPerCluster: BYTE #00
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;.MaxClusterHigh: WORD #0000 ; ¬ ªá. ç¨á«® ª« áâ¥à®¢ (¡¥§ á«ã¦.)
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;.BytesPerSector: WORD #0000
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.SectorsPerCluster: BYTE #00
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;.FSINFO_Sector: WORD #01
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;.BPB_SERIAL_NUMBER: DWORD #00000000
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;.BPB_LABEL: BLOCK 11,' ' ; 11 ¤«ï FAT, 31 ¤«ï CDFS
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;.UPD_FSINFO: BYTE 0
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;.BPB_SERIAL_NUMBER: DWORD #00000000
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;.BPB_LABEL: BLOCK 11,' ' ; 11 ¤«ï FAT, 31 ¤«ï CDFS
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;.UPD_FSINFO: BYTE 0
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;.FREE_CLUSTERS_COUNT_L: WORD #FFFF
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;.FREE_CLUSTERS_COUNT_H: WORD #FFFF
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;.FilesPerSector: BYTE #00 ; ç¨á«® ä ©«®¢ëå § ¯¨á¥© ¢ ᥪâ®à¥
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;.ClustersPerBank: BYTE #00 ; A - Clusters per bank (16k) (ç¨á«® ª« áâ¥à®¢ ¡«®ª Ž‡“)
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;.READ_PG: BYTE #00 ;!TODO ¥ ¨á¯®«ì§ãîâáï ¥ª®â®àë¥ § 票ï, ® § ¤ã¬ª ¥¯«®å ï)))
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;.S_X_H: DWORD #0000 ; ª®«¨ç¥á⢮ ᥪâ®à®¢ 樫¨¤à¥
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;.FilesPerSector: BYTE #00 ; ç¨á«® ä ©«®¢ëå § ¯¨á¥© ¢ ᥪâ®à¥
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;.ClustersPerBank: BYTE #00 ; A - Clusters per bank (16k) (ç¨á«® ª« áâ¥à®¢ ¡«®ª Ž‡“)
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;.READ_PG: BYTE #00 ;!TODO ¥ ¨á¯®«ì§ãîâáï ¥ª®â®àë¥ § 票ï, ® § ¤ã¬ª ¥¯«®å ï)))
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;.S_X_H: DWORD #0000 ; ª®«¨ç¥á⢮ ᥪâ®à®¢ 樫¨¤à¥
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ENDS
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include 'shared_includes/constants/sp2000.inc'
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@ -85,7 +88,9 @@
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major_version equ 2 ; áâ. ®¬¥à ¢¥àᨨ
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minor_version equ 0 ; ¬«. ®¬¥à
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;;
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SECTORS_OF_LOADER EQU 4
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SECTORS_OF_LOADER EQU 4 ; ᥪâ®à®¢ § £àã§ç¨ª
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.IN_BPB EQU 1
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.AFTER_BPB EQU 3
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org_addr EQU #8000 + CLP_Buffer
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code_addr EQU BEGIN
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@ -110,7 +115,7 @@ BEGIN: in a,(SLOT3)
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ld de,#0146 ; 1.70.810 d=¢¥àá¨ï, e=¬®¤¨ä¨ª æ¨ï, bc - ®¬¥à ᡮન. de = #0146, bc = 810 dos ver 1.70.810
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and a
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sbc hl,de
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;[ ] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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;[x] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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;jr nc,version_ok
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jr z,.check_build ; ¥á«¨ ®¬¥à ¢¥àᨨ 1.70
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jr nc,version_ok ; ¥á«¨ ®¬¥à ¢¥àᨨ ¡®«ìè¥ 1.70
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@ -120,7 +125,7 @@ BEGIN: in a,(SLOT3)
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call print_string
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ld a,-1
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jp exit
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;[ ] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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;[x] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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.check_build: ld hl,810 ; 1.70.810 d=¢¥àá¨ï, e=¬®¤¨ä¨ª æ¨ï, bc - ®¬¥à ᡮન. de = #0146, bc = 810 dos ver 1.70.810
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sbc hl,bc
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jr nc,BEGIN.old_ver
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@ -315,8 +320,6 @@ write_boot_loader:
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jr z,write_to_floppy
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cp #FA ; RAM disk
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jr z,write_to_ram_disk
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; pop hl ; ¢®ááâ. ¡ « á á⥪
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; call close_device
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cp #F8 ; ¢¨â
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jp z,write_to_hard_disk
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scf ; ¥§ ª®¬ë© ä®à¬ â
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@ -348,19 +351,20 @@ write_to_floppy:
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ld (buffer + BOOT_SECTOR.Number_of_FATs),a ; ç¨á«® ª®¯¨© FAT-®¢
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ld hl,(buffer + BOOT_SECTOR.RESERVED_SECTORS) ; § १¥à¢. ᥪâ®à®¢
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ld bc,(buffer + BOOT_SECTOR.SectorsPerFAT16) ; ᥪâ®à®¢ FAT
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; ld a,b
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; or c
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; scf
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; ret z ; 0 ᥪâ®à®¢ FAT
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; ;
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add hl,bc
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ld (buffer + BOOT_SECTOR.RESERVED_SECTORS),hl ; § १¥à¢. ᥪâ®à®¢
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dec hl
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ld de,SECTORS_OF_LOADER
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ld de,SECTORS_OF_LOADER.AFTER_BPB
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and a
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sbc hl,de
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ret c
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ret c
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overwrite_floppy:
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; ¯¥à¥ª¨¤ë¢ ¨¥ ç á⨠§ £àã§ç¨ª ¢ 0 ᥪâ®à
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LD HL,DSS_Boot_Loader.ZERO_SECTOR_OF_BPB.physical
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LD DE,buffer + (_sBOOT_SECTOR.PARTITION_TABLE - DSS_Boot_Loader.ZERO_SECTOR_OF_BPB.Size)
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LD BC,DSS_Boot_Loader.ZERO_SECTOR_OF_BPB.Size
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LDIR
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;
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; § ¯¨á âì boot-ᥪâ®à § ¤
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ld a,(disk) ; § ¤ ë© ®¬¥à ¤¨áª
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ld hl,0 ; áâ. à §àï¤ «®£. ᥪâ®à
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@ -374,7 +378,7 @@ overwrite_floppy:
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ld hl,0 ; áâ. à §àï¤ «®£. ᥪâ®à
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ld ix,1 ; ¬«. à §àï¤
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ld de,code_loader ; ®âªã¤ (ª®¤ § £àã§ç¨ª )
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ld bc,SECTORS_OF_LOADER*256 + Dss.DRV.Write ; § ¯¨á âì 3 ᥪâ®à (à §¬¥à § £à.)
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ld bc,SECTORS_OF_LOADER.AFTER_BPB*256+Dss.DRV.Write; § ¯¨á âì 3 ᥪâ®à (à §¬¥à § £à.)
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rst ToDSS.DRV
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ret
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@ -386,69 +390,27 @@ overwrite_floppy:
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; ¢ë室: CF-®è¨¡ª § ¯¨á¨
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;-------------------------------------------------
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write_to_ram_disk:
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write_to_: ld a,(disk) ; ®¬¥à § ¤ ®£® ¤¨áª
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ld de,#55AA
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ld bc,Dss.DRV.GenIOCTL.GetParams
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rst ToDSS.DRV
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ex af,af'
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;[ ] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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ld b,a
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inc c
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scf
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ret z ; !TODO § £à㧪 á à áè¨à¥®£® à §¤¥« ¥ ¯®¤¤¥à¦¨¢ ¥âáï
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dec c
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CP #80 ;!HARDCODE ⨯ ¤à ©¢ - HDD
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JR NC,.skip_FAT_check
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push bc ; B - PHISICAL DRIVE NUMBER, C - PARTITION RECORD NUMBER IN DRIVE MBR
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; [x] 02/02/2024 ¯à®¢¥àª ¢«¥§ ¥¬®áâì § £àã§ç¨ª (ç⮡ ¥ ¯®¯®àâ¨âì ä â)
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LD HL,0
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LD IX,0
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LD DE,buffer
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LD BC,1*256 + BIOS.DRV_READ
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RST ToBIOS
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POP BC
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LD HL,(buffer + _sBOOT_SECTOR_PARAMS.RESERVED_SECTORS)
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LD DE,SECTORS_OF_LOADER + 1 ; ¬¨¨¬ «ì®¥ à ááâ®ï¨¥ ¤à ©¢¥ ®â ã«¥¢®£® ᥪâ®à ¤® ä â (¤«¨ § £àã§ç¨ª + 1)
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AND A
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SBC HL,DE
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RET C
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CALL write_no_BPB
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RET C
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; buffer = sector 0
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;
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.skip_FAT_check:;
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push bc
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ld a,b
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ld hl,0 ; áâ. à §àï¤ «®£. ᥪâ®à
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ld ix,1 ; ¬«. à §àï¤
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ld de,code_loader ; ®âªã¤ (ª®¤ § £àã§ç¨ª )
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ld bc,SECTORS_OF_LOADER*256 + BIOS.DRV_WRITE ; § ¯¨á âì 3 ᥪâ®à (à §¬¥à § £à.)
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rst ToBIOS
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;[ ] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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pop bc
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;
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ret
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JR write_to_BPB
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write_to_hard_disk:
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;[x] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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CALL write_to_
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CALL write_no_BPB
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RET C
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; ¯à®¢¥àª <20>€Œ-¤¨áª
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; buffer = sector 0
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;
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; ¯à®¢¥àª <20>€Œ-¤¨áª (à §¤¥«ë à ¬¤¨áª¥ ¯®ª ¥ ¯®¤¤¥à¦¨¢ îâáï)
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LD A,B
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CP #80-1 ;!HARDCODE HDD number
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CCF
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RET NC
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JR C,write_to_BPB
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;
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PUSH BC ; B - PHISICAL DRIVE NUMBER, C - PARTITION RECORD NUMBER IN DRIVE MBR
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LD HL,0
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LD IX,0
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LD DE,buffer
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LD BC,1*256 + BIOS.DRV_READ
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RST ToBIOS
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; check signature
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LD HL,(buffer + _sBOOT_SECTOR.MBR_SIGNATURE)
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LD DE,#AA55
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AND A
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SBC HL,DE
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POP BC ; B - PHISICAL DRIVE NUMBER, C - PARTITION RECORD NUMBER IN DRIVE MBR
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SCF
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PUSH BC
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CALL Read_MBR
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RET NZ
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POP BC
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PUSH BC
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; set active in buffer
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INC C
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@ -464,7 +426,6 @@ write_to_hard_disk:
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;
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LD A,#80
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LD (HL),A
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;!FIXIT fat32 not supported
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PUSH HL
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INC HL
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INC HL
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@ -492,16 +453,81 @@ write_to_hard_disk:
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.next: AND A
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SBC HL,DE
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DJNZ .loop
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; save buffer to disk
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POP BC ; B - PHISICAL DRIVE NUMBER, C - PARTITION RECORD NUMBER IN DRIVE MBR
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ld a,b
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ld hl,0 ; áâ. à §àï¤ «®£. ᥪâ®à
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ld ix,0 ; ¬«. à §àï¤
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ld de,buffer ; ®âªã¤ (ª®¤ § £àã§ç¨ª )
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ld bc,1*256 + BIOS.DRV_WRITE ; § ¯¨á âì 1 ᥪâ®à
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RST ToBIOS
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RET
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;
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JR write_to_BPB.no_push
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write_to_BPB: PUSH BC
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; ¯¥à¥ª¨¤ë¢ ¨¥ ç á⨠§ £àã§ç¨ª ¢ 0 ᥪâ®à
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.no_push: LD HL,DSS_Boot_Loader.ZERO_SECTOR_OF_BPB.physical
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LD DE,buffer + (_sBOOT_SECTOR.PARTITION_TABLE - DSS_Boot_Loader.ZERO_SECTOR_OF_BPB.Size)
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LD BC,DSS_Boot_Loader.ZERO_SECTOR_OF_BPB.Size
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LDIR
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; § ¯¨áì ¢ 0 ᥪâ®à ªã᪠§ £àã§ç¨ª
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pop af ; § ¤ ë© ®¬¥à ¤¨áª
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ld hl,0 ; áâ. à §àï¤ «®£. ᥪâ®à
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ld ix,0 ; ¬«. à §àï¤
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ld de,buffer ; ®âªã¤ (ª®¤ § £àã§ç¨ª )
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ld bc,1*256 + BIOS.DRV_WRITE ; § ¯¨á âì 1 ᥪâ®à
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RST ToBIOS
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RET
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;
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;
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write_no_BPB: ld a,(disk) ; ®¬¥à § ¤ ®£® ¤¨áª
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ld de,#55AA
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ld bc,Dss.DRV.GenIOCTL.GetParams
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rst ToDSS.DRV
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ex af,af'
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;[x] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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ld b,a
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inc c
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scf
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ret z ; !TODO § £à㧪 á à áè¨à¥®£® à §¤¥« ¥ ¯®¤¤¥à¦¨¢ ¥âáï
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dec c
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CP #80 ;!HARDCODE ⨯ ¤à ©¢ - HDD
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JR NC,.skip_FAT_check
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PUSH BC
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; B - PHISICAL DRIVE NUMBER, C - PARTITION RECORD NUMBER IN DRIVE MBR
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; A - PHISICAL DRIVE NUMBER
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; [x] 02/02/2024 ¯à®¢¥àª ¢«¥§ ¥¬®áâì § £àã§ç¨ª (ç⮡ ¥ ¯®¯®àâ¨âì ä â)
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CALL Read_MBR
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RET NZ
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POP BC
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LD HL,(buffer + _sBOOT_SECTOR_PARAMS.RESERVED_SECTORS)
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; ¬¨¨¬ «ì®¥ à ááâ®ï¨¥ ¤à ©¢¥ ®â ã«¥¢®£® ᥪâ®à ¤® ä â (¤«¨ § £àã§ç¨ª + 1)
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LD DE,SECTORS_OF_LOADER.AFTER_BPB + 1
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AND A
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SBC HL,DE
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RET C
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;
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.skip_FAT_check:;
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push bc
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ld a,b
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ld hl,0 ; áâ. à §àï¤ «®£. ᥪâ®à
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ld ix,1 ; ¬«. à §àï¤
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ld de,code_loader ; ®âªã¤ (ª®¤ § £àã§ç¨ª )
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ld bc,SECTORS_OF_LOADER.AFTER_BPB*256+BIOS.DRV_WRITE; § ¯¨á âì 3 ᥪâ®à (à §¬¥à § £à.)
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rst ToBIOS
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;[x] 17.12.2023 § £à㧪 á ªâ¨¢®£® à §¤¥« , ¥ á ¯¥à¢®£®
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pop bc
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;
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ret
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; in: a - drive
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; out CF = 1.
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; ZF = 1 - OK,
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; ZF = 0 - error
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Read_MBR: LD HL,0
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LD IX,0
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LD DE,buffer
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LD BC,1*256 + BIOS.DRV_READ
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RST ToBIOS
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LD HL,(buffer + _sBOOT_SECTOR.MBR_SIGNATURE)
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LD DE,#AA55
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AND A
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SBC HL,DE
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SCF
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RET
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;-------------------------------------------------
|
||||
; ‚뤥«¨âì § ¤ ë© ¤¨áª ¨§ ª®¬-áâப¨
|
||||
;
|
||||
@ -867,6 +893,8 @@ write_file: ld a,FAT_ATTR.ARCHIVE ;
|
||||
; „Ž‘-§ £àã§ç¨ª
|
||||
code_loader: include 'dssboot.asm' ; 㨢¥àá «ìë© § £àã§ç¨ª ¤«ï áâ ண® ¨ ®¢®£® ¤®á
|
||||
code_loader.size EQU $-code_loader
|
||||
ASSERT SECTORS_OF_LOADER*512 >= (code_loader.size), "incorrect value of the SECTORS_OF_LOADER variable"
|
||||
|
||||
|
||||
DISPLAY " dssboot size: ", /D,code_loader.size, " bytes. Sectors: ",/D,(code_loader.size/512 + (code_loader.size mod 512)/(code_loader.size mod 512))
|
||||
|
||||
|
||||
@ -876,7 +876,7 @@ GET_FAT32_CELL:
|
||||
LD H,A
|
||||
ADD HL,HL
|
||||
ADD HL,HL
|
||||
PUSH HL ; [ç] fat32 á®åà 塞 á«ãç ©, ¥á«¨ READ_FAT_TABLE ¨á¯®àâ¨â
|
||||
PUSH HL ; [x] fat32 á®åà 塞 á«ãç ©, ¥á«¨ READ_FAT_TABLE ¨á¯®àâ¨â
|
||||
AND A
|
||||
;
|
||||
EXX
|
||||
|
||||
Loading…
Reference in New Issue
Block a user