0,0 → 1,374 |
;****************************************************** |
; ïîèñê ïðèâîäîâ HDD è CD |
; àâòîð èñõîäíîãî òåêñòà Êóëàêîâ Âëàäèìèð Ãåííàäüåâè÷. |
; àäàïòàöèÿ è äîðàáîòêà Mario79 |
;****************************************************** |
|
;**************************************************** |
;* ÏÎÈÑÊ HDD è CD * |
;**************************************************** |
FindHDD: |
mov [ChannelNumber],1 |
mov [DiskNumber],0 |
call FindHDD_3 |
; mov ax,[Sector512+176] |
; mov [0x40006],ax |
; mov ax,[Sector512+126] |
; mov [0x40008],ax |
; mov ax,[Sector512+128] |
; mov [0x40008],ax |
mov [DiskNumber],1 |
call FindHDD_3 |
; mov al,[Sector512+176] |
; mov [0x40007],al |
inc [ChannelNumber] |
mov [DiskNumber],0 |
call FindHDD_3 |
; mov al,[Sector512+176] |
; mov [0x40008],al |
mov [DiskNumber],1 |
call FindHDD_1 |
; mov al,[Sector512+176] |
; mov [0x40009],al |
|
jmp EndFindHDD |
|
FindHDD_1: |
call ReadHDD_ID |
cmp [DevErrorCode],0 |
jne FindHDD_2 |
cmp [Sector512+6],word 16 |
ja FindHDD_2 |
cmp [Sector512+12],word 255 |
ja FindHDD_2 |
inc byte [0x40001] |
jmp FindHDD_2_2 |
FindHDD_2: |
call DeviceReset |
cmp [DevErrorCode],0 |
jne FindHDD_2_2 |
call ReadCD_ID |
cmp [DevErrorCode],0 |
jne FindHDD_2_2 |
inc byte [0x40001] |
inc byte [0x40001] |
FindHDD_2_2: |
ret |
|
FindHDD_3: |
call FindHDD_1 |
shl byte [0x40001],2 |
ret |
|
|
; Àäðåñ ñ÷èòûâàåìîãî ñåêòîðà â ðåæèìå LBA |
SectorAddress DD ? |
|
;************************************************* |
;* ×ÒÅÍÈÅ ÈÄÅÍÒÈÔÈÊÀÒÎÐÀ ÆÅÑÒÊÎÃÎ ÄÈÑÊÀ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðåìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà (1 èëè 2); * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå (0 èëè 1). * |
;* Èäåíòèôèêàöèîííûé áëîê äàííûõ ñ÷èòûâàåòñÿ * |
;* â ìàññèâ Sector512. * |
;************************************************* |
ReadHDD_ID: |
; Çàäàòü ðåæèì CHS |
mov [ATAAddressMode],0 |
; Ïîñëàòü êîìàíäó èäåíòèôèêàöèè óñòðîéñòâà |
mov [ATAFeatures],0 |
mov [ATAHead],0 |
mov [ATACommand],0ECh |
call SendCommandToHDD |
cmp [DevErrorCode],0 ;ïðîâåðèòü êîä îøèáêè |
jne @@End ;çàêîí÷èòü, ñîõðàíèâ êîä îøèáêè |
mov DX,[ATABasePortAddr] |
add DX,7 ;àäðåñ ðåãèñòðà ñîñòîÿíèÿ |
mov ecx,0xffff |
@@WaitCompleet: |
; Ïðîâåðèòü âðåìÿ âûïîëíåíèÿ êîìàíäû |
dec ecx |
cmp ecx,0 |
je @@Error1 ;îøèáêà òàéì-àóòà |
; Ïðîâåðèòü ãîòîâíîñòü |
in AL,DX |
test AL,80h ;ñîñòîÿíèå ñèãíàëà BSY |
jnz @@WaitCompleet |
test AL,1 ;ñîñòîÿíèå ñèãíàëà ERR |
jnz @@Error6 |
test AL,08h ;ñîñòîÿíèå ñèãíàëà DRQ |
jz @@WaitCompleet |
; Ïðèíÿòü áëîê äàííûõ îò êîíòðîëëåðà |
; mov AX,DS |
; mov ES,AX |
mov EDI,Sector512 ;offset Sector512 |
mov DX,[ATABasePortAddr] ;ðåãèñòð äàííûõ |
mov CX,256 ;÷èñëî ñ÷èòûâàåìûõ ñëîâ |
rep insw ;ïðèíÿòü áëîê äàííûõ |
jmp @@End |
; Çàïèñàòü êîä îøèáêè |
@@Error1: |
mov [DevErrorCode],1 |
jmp @@End |
@@Error6: |
mov [DevErrorCode],6 |
@@End: ret |
|
|
|
; Ñòàíäàðòíûå áàçîâûå àäðåñà êàíàëîâ 1 è 2 |
StandardATABases DW 1F0h, 170h |
; Íîìåð êàíàëà |
ChannelNumber DW ? |
; Íîìåð äèñêà |
DiskNumber DB ? |
; Áàçîâûé àäðåñ ãðóïïû ïîðòîâ êîíòðîëëåðà ATA |
ATABasePortAddr DW ? |
; Ïàðàìåòðû ATA-êîìàíäû |
ATAFeatures DB ? ;îñîáåííîñòè |
ATASectorCount DB ? ;êîëè÷åñòâî îáðàáàòûâàåìûõ ñåêòîðîâ |
ATASectorNumber DB ? ;íîìåð íà÷àëüíîãî ñåêòîðà |
ATACylinder DW ? ;íîìåð íà÷àëüíîãî öèëèíäðà |
ATAHead DB ? ;íîìåð íà÷àëüíîé ãîëîâêè |
ATAAddressMode DB ? ;ðåæèì àäðåñàöèè (0 - CHS, 1 - LBA) |
ATACommand DB ? ;êîä êîìàíäû, ïîäëåæàùåé âûïîëíåíèþ |
; Êîä îøèáêè (0 - íåò îøèáîê, 1 - ïðåâûøåí äîïóñòèìûé |
; èíòåðâàë îæèäàíèÿ, 2 - íåâåðíûé êîä ðåæèìà àäðåñàöèè, |
; 3 - íåâåðíûé íîìåð êàíàëà, 4 - íåâåðíûé íîìåð äèñêà, |
; 5 - íåâåðíûé íîìåð ãîëîâêè, 6 - îøèáêà ïðè âûïîëíåíèè |
; êîìàíäû) |
DevErrorCode DB ? |
|
;**************************************************** |
;* ÏÎÑËÀÒÜ ÊÎÌÀÍÄÓ ÇÀÄÀÍÍÎÌÓ ÄÈÑÊÓ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðåìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà (1 èëè 2); * |
;* DiskNumber - íîìåð äèñêà (0 èëè 1); * |
;* ATAFeatures - "îñîáåííîñòè"; * |
;* ATASectorCount - êîëè÷åñòâî ñåêòîðîâ; * |
;* ATASectorNumber - íîìåð íà÷àëüíîãî ñåêòîðà; * |
;* ATACylinder - íîìåð íà÷àëüíîãî öèëèíäðà; * |
;* ATAHead - íîìåð íà÷àëüíîé ãîëîâêè; * |
;* ATAAddressMode - ðåæèì àäðåñàöèè (0-CHS, 1-LBA); * |
;* ATACommand - êîä êîìàíäû. * |
;* Ïîñëå óñïåøíîãî âûïîëíåíèÿ ôóíêöèè: * |
;* â ATABasePortAddr - áàçîâûé àäðåñ HDD; * |
;* â DevErrorCode - íîëü. * |
;* Ïðè âîçíèêíîâåíèè îøèáêè â DevErrorCode áóäåò * |
;* âîçâðàùåí êîä îøèáêè. * |
;**************************************************** |
SendCommandToHDD: |
; Ïðîâåðèòü çíà÷åíèå êîäà ðåæèìà |
cmp [ATAAddressMode],1 |
ja @@Err2 |
; Ïðîâåðèòü êîððåêòíîñòü íîìåðà êàíàëà |
mov BX,[ChannelNumber] |
cmp BX,1 |
jb @@Err3 |
cmp BX,2 |
ja @@Err3 |
; Óñòàíîâèòü áàçîâûé àäðåñ |
dec BX |
shl BX,1 |
movzx ebx,bx |
mov AX,[ebx+StandardATABases] |
mov [ATABasePortAddr],AX |
; Îæèäàíèå ãîòîâíîñòè HDD ê ïðèåìó êîìàíäû |
; Âûáðàòü íóæíûé äèñê |
mov DX,[ATABasePortAddr] |
add DX,6 ;àäðåñ ðåãèñòðà ãîëîâîê |
mov AL,[DiskNumber] |
cmp AL,1 ;ïðîâåðèòü íîìåðà äèñêà |
ja @@Err4 |
shl AL,4 |
or AL,10100000b |
out DX,AL |
; Îæèäàòü, ïîêà äèñê íå áóäåò ãîòîâ |
inc DX |
mov ecx,0xfff |
; mov eax,[timer_ticks] |
; mov [TickCounter_1],eax |
@@WaitHDReady: |
; Ïðîâåðèòü âðåìÿ îæèäàíèÿ |
dec ecx |
cmp ecx,0 |
je @@Err1 |
; mov eax,[timer_ticks] |
; sub eax,[TickCounter_1] |
; cmp eax,300 ;îæèäàòü 300 òèêîâ |
; ja @@Err1 ;îøèáêà òàéì-àóòà |
; Ïðî÷èòàòü ðåãèñòð ñîñòîÿíèÿ |
in AL,DX |
; Ïðîâåðèòü ñîñòîÿíèå ñèãíàëà BSY |
test AL,80h |
jnz @@WaitHDReady |
; Ïðîâåðèòü ñîñòîÿíèå ñèãíàëà DRQ |
test AL,08h |
jnz @@WaitHDReady |
; Çàãðóçèòü êîìàíäó â ðåãèñòðû êîíòðîëëåðà |
cli |
mov DX,[ATABasePortAddr] |
inc DX ;ðåãèñòð "îñîáåííîñòåé" |
mov AL,[ATAFeatures] |
out DX,AL |
inc DX ;ñ÷åò÷èê ñåêòîðîâ |
mov AL,[ATASectorCount] |
out DX,AL |
inc DX ;ðåãèñòð íîìåðà ñåêòîðà |
mov AL,[ATASectorNumber] |
out DX,AL |
inc DX ;íîìåð öèëèíäðà (ìëàäøèé áàéò) |
mov AX,[ATACylinder] |
out DX,AL |
inc DX ;íîìåð öèëèíäðà (ñòàðøèé áàéò) |
mov AL,AH |
out DX,AL |
inc DX ;íîìåð ãîëîâêè/íîìåð äèñêà |
mov AL,[DiskNumber] |
shl AL,4 |
cmp [ATAHead],0Fh ;ïðîâåðèòü íîìåð ãîëîâêè |
ja @@Err5 |
or AL,[ATAHead] |
or AL,10100000b |
mov AH,[ATAAddressMode] |
shl AH,6 |
or AL,AH |
out DX,AL |
; Ïîñëàòü êîìàíäó |
mov AL,[ATACommand] |
inc DX ;ðåãèñòð êîìàíä |
out DX,AL |
sti |
; Ñáðîñèòü ïðèçíàê îøèáêè |
mov [DevErrorCode],0 |
jmp @@End_2 |
; Çàïèñàòü êîä îøèáêè |
@@Err1: mov [DevErrorCode],1 |
jmp @@End_2 |
@@Err2: mov [DevErrorCode],2 |
jmp @@End_2 |
@@Err3: mov [DevErrorCode],3 |
jmp @@End_2 |
@@Err4: mov [DevErrorCode],4 |
jmp @@End_2 |
@@Err5: mov [DevErrorCode],5 |
; Çàâåðøåíèå ðàáîòû ïðîãðàììû |
@@End_2: |
ret |
|
;************************************************* |
;* ×ÒÅÍÈÅ ÈÄÅÍÒÈÔÈÊÀÒÎÐÀ ÓÑÒÐÎÉÑÒÂÀ ATAPI * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà; * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå. * |
;* Èäåíòèôèêàöèîííûé áëîê äàííûõ ñ÷èòûâàåòñÿ * |
;* â ìàññèâ Sector512. * |
;************************************************* |
ReadCD_ID: |
; Çàäàòü ðåæèì CHS |
mov [ATAAddressMode],0 |
; Ïîñëàòü êîìàíäó èäåíòèôèêàöèè óñòðîéñòâà |
mov [ATAFeatures],0 |
mov [ATASectorCount],0 |
mov [ATASectorNumber],0 |
mov [ATACylinder],0 |
mov [ATAHead],0 |
mov [ATACommand],0A1h |
call SendCommandToHDD |
cmp [DevErrorCode],0 ;ïðîâåðèòü êîä îøèáêè |
jne @@End_1 ;çàêîí÷èòü, ñîõðàíèâ êîä îøèáêè |
; Îæèäàòü ãîòîâíîñòü äàííûõ HDD |
mov DX,[ATABasePortAddr] |
add DX,7 ;ïîðò 1õ7h |
mov ecx,0xffff |
@@WaitCompleet_1: |
; Ïðîâåðèòü âðåìÿ |
dec ecx |
cmp ecx,0 |
je @@Error1_1 ;îøèáêà òàéì-àóòà |
; Ïðîâåðèòü ãîòîâíîñòü |
in AL,DX |
test AL,80h ;ñîñòîÿíèå ñèãíàëà BSY |
jnz @@WaitCompleet_1 |
test AL,1 ;ñîñòîÿíèå ñèãíàëà ERR |
jnz @@Error6_1 |
test AL,08h ;ñîñòîÿíèå ñèãíàëà DRQ |
jz @@WaitCompleet_1 |
; Ïðèíÿòü áëîê äàííûõ îò êîíòðîëëåðà |
; mov AX,DS |
; mov ES,AX |
mov EDI,Sector512 ;offset Sector512 |
mov DX,[ATABasePortAddr] ;ïîðò 1x0h |
mov CX,256 ;÷èñëî ñ÷èòûâàåìûõ ñëîâ |
rep insw |
jmp @@End_1 |
; Çàïèñàòü êîä îøèáêè |
@@Error1_1: |
mov [DevErrorCode],1 |
jmp @@End_1 |
@@Error6_1: |
mov [DevErrorCode],6 |
@@End_1: |
ret |
|
;************************************************* |
;* ÑÁÐÎÑ ÓÑÒÐÎÉÑÒÂÀ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðåìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà (1 èëè 2); * |
;* DiskNumber - íîìåð äèñêà (0 èëè 1). * |
;************************************************* |
DeviceReset: |
; Ïðîâåðèòü êîððåêòíîñòü íîìåðà êàíàëà |
mov BX,[ChannelNumber] |
cmp BX,1 |
jb @@Err3_2 |
cmp BX,2 |
ja @@Err3_2 |
; Óñòàíîâèòü áàçîâûé àäðåñ |
dec BX |
shl BX,1 |
movzx ebx,bx |
mov DX,[ebx+StandardATABases] |
mov [ATABasePortAddr],DX |
; Âûáðàòü íóæíûé äèñê |
add DX,6 ;àäðåñ ðåãèñòðà ãîëîâîê |
mov AL,[DiskNumber] |
cmp AL,1 ;ïðîâåðèòü íîìåðà äèñêà |
ja @@Err4_2 |
shl AL,4 |
or AL,10100000b |
out DX,AL |
; Ïîñëàòü êîìàíäó "Ñáðîñ" |
mov AL,08h |
inc DX ;ðåãèñòð êîìàíä |
out DX,AL |
mov ecx,0xffff |
@@WaitHDReady_1: |
; Ïðîâåðèòü âðåìÿ îæèäàíèÿ |
dec ecx |
cmp ecx,0 |
je @@Err1_2 ;îøèáêà òàéì-àóòà |
; Ïðî÷èòàòü ðåãèñòð ñîñòîÿíèÿ |
in AL,DX |
; Ïðîâåðèòü ñîñòîÿíèå ñèãíàëà BSY |
test AL,80h |
jnz @@WaitHDReady_1 |
; Ñáðîñèòü ïðèçíàê îøèáêè |
mov [DevErrorCode],0 |
jmp @@End_3 |
; Îáðàáîòêà îøèáîê |
@@Err1_2: mov [DevErrorCode],1 |
jmp @@End_3 |
@@Err3_2: mov [DevErrorCode],3 |
jmp @@End_3 |
@@Err4_2: mov [DevErrorCode],4 |
; Çàïèñàòü êîä îøèáêè |
@@End_3: |
ret |
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EndFindHDD: |
|