0,0 → 1,546 |
;********************************************************** |
; Íåïîñðåäñòâåííàÿ ðàáîòà ñ óñòðîéñòâîì ÑD (ATAPI) |
;********************************************************** |
; Àâòîð èñõîäíîãî òåêñòà Êóëàêîâ Âëàäèìèð Ãåííàäüåâè÷. |
; Àäàïòàöèÿ è äîðàáîòêà Mario79 |
|
; Ïðîöåäóðà äëÿ ïîëíîãî ñ÷èòûâàíèÿ âñåõ |
; äàííûõ èç ñåêòîðà êîìïàêò-äèñêà |
; Àâòîð òåêñòà ïðîãðàììû Êóëàêîâ Âëàäèìèð Ãåííàäüåâè÷. |
|
|
; Ìàêñèìàëüíîå êîëè÷åñòâî ïîâòîðåíèé îïåðàöèè ÷òåíèÿ |
MaxRetr equ 3 |
; Ïðåäåëüíîå âðåìÿ îæèäàíèÿ ãîòîâíîñòè ê ïðèåìó êîìàíäû |
; (â òèêàõ) |
BSYWaitTime equ 1000 ;2 |
|
;************************************************* |
;* ÏÎËÍÎÅ ×ÒÅÍÈÅ ÑÅÊÒÎÐÀ ÊÎÌÏÀÊÒ-ÄÈÑÊÀ * |
;* Ñ÷èòûâàþòñÿ äàííûå ïîëüçîâàòåëÿ, èíôîðìàöèÿ * |
;* ñóáêàíàëà è êîíòðîëüíàÿ èíôîðìàöèÿ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà; * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå; * |
;* CDSectorAddress - àäðåñ ñ÷èòûâàåìîãî ñåêòîðà. * |
;* Äàííûå ñ÷èòûâàåòñÿ â ìàññèâ CDDataBuf. * |
;************************************************* |
ReadCD: |
pusha |
; Çàäàòü ðàçìåð ñåêòîðà |
mov [CDBlockSize],2048 ;2352 |
; Î÷èñòèòü áóôåð ïàêåòíîé êîìàíäû |
call clear_packet_buffer |
; Ñôîðìèðîâàòü ïàêåòíóþ êîìàíäó äëÿ ñ÷èòûâàíèÿ |
; ñåêòîðà äàííûõ |
; Çàäàòü êîä êîìàíäû Read CD |
mov [PacketCommand],byte 0x28 ;0xBE |
; Çàäàòü àäðåñ ñåêòîðà |
mov AX,word [CDSectorAddress+2] |
xchg AL,AH |
mov word [PacketCommand+2],AX |
mov AX,word [CDSectorAddress] |
xchg AL,AH |
mov word [PacketCommand+4],AX |
; mov eax,[CDSectorAddress] |
; mov [PacketCommand+2],eax |
; Çàäàòü êîëè÷åñòâî ñ÷èòûâàåìûõ ñåêòîðîâ |
mov [PacketCommand+8],byte 1 |
; Çàäàòü ñ÷èòûâàíèå äàííûõ â ïîëíîì îáúåìå |
; mov [PacketCommand+9],byte 0xF8 |
; Ïîäàòü êîìàíäó |
call SendPacketDatCommand |
; call test_mario79 |
popa |
ret |
|
;******************************************** |
;* ×ÒÅÍÈÅ ÑÅÊÒÎÐÀ Ñ ÏÎÂÒÎÐÀÌÈ * |
;* Ìíîãîêðàòíîå ïîâòîðåíèå ÷òåíèÿ ïðè ñáîÿõ * |
;******************************************** |
ReadCDWRetr: |
pusha |
; Öèêë, ïîêà êîìàíäà íå âûïîëíåíà óñïåøíî èëè íå |
; èñ÷åðïàíî êîëè÷åñòâî ïîïûòîê |
mov ECX,MaxRetr |
@@NextRetr: |
; Ïîäàòü êîìàíäó |
call ReadCD |
cmp [DevErrorCode],0 |
je @@End_4 |
; Çàäåðæêà íà 2,5 ñåêóíäû |
mov EAX,[timer_ticks] |
add EAX,250 ;50 |
@@Wait: |
call change_task |
cmp EAX,[timer_ticks] |
ja @@Wait |
loop @@NextRetr |
; call test_mario79 |
; Ñîîáùåíèå îá îøèáêå |
; mov SI,offset ErrS |
; call FatalError |
@@End_4: |
popa |
ret |
|
|
; Óíèâåðñàëüíûå ïðîöåäóðû, îáåñïå÷èâàþùèå âûïîëíåíèå |
; ïàêåòíûõ êîìàíä â ðåæèìå PIO |
; |
; Àâòîð òåêñòà ïðîãðàììû Êóëàêîâ Âëàäèìèð Ãåííàäüåâè÷. |
|
; Ìàêñèìàëüíî äîïóñòèìîå âðåìÿ îæèäàíèÿ ðåàêöèè |
; óñòðîéñòâà íà ïàêåòíóþ êîìàíäó (â òèêàõ) |
MaxCDWaitTime equ 1000 ;200 ;10 ñåêóíä |
|
; Îáëàñòü ïàìÿòè äëÿ ôîðìèðîâàíèÿ ïàêåòíîé êîìàíäû |
PacketCommand: rb 12 ;DB 12 DUP (?) |
; Îáëàñòü ïàìÿòè äëÿ ïðèåìà äàííûõ îò äèñêîâîäà |
;CDDataBuf DB 4096 DUP (0) |
; Ðàçìåð ïðèíèìàåìîãî áëîêà äàííûõ â áàéòàõ |
CDBlockSize DW ? |
; Àäðåñ ñ÷èòûâàåìîãî ñåêòîðà äàííûõ |
CDSectorAddress: DD ? |
; Âðåìÿ íà÷àëà î÷åðåäíîé îïåðàöèè ñ äèñêîì |
TickCounter_1 DD 0 |
; Âðåìÿ íà÷àëà îæèäàíèÿ ãîòîâíîñòè óñòðîéñòâà |
WURStartTime DD 0 |
; óêàçàòåëü áóôåðà äëÿ ñ÷èòûâàíèÿ |
CDDataBuf_pointer dd 0 |
|
;**************************************************** |
;* ÏÎÑËÀÒÜ ÓÑÒÐÎÉÑÒÂÓ ATAPI ÏÀÊÅÒÍÓÞ ÊÎÌÀÍÄÓ, * |
;* ÏÐÅÄÓÑÌÀÒÐÈÂÀÞÙÓÞ ÏÅÐÅÄÀ×Ó ÎÄÍÎÃÎ ÑÅÊÒÎÐÀ ÄÀÍÍÛÕ * |
;* ÐÀÇÌÅÐÎÌ 2048 ÁÀÉÒ ÎÒ ÓÑÒÐÎÉÑÒÂÀ Ê ÕÎÑÒÓ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà; * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå; * |
;* PacketCommand - 12-áàéòíûé êîìàíäíûé ïàêåò; * |
;* CDBlockSize - ðàçìåð ïðèíèìàåìîãî áëîêà äàííûõ. * |
;**************************************************** |
SendPacketDatCommand: |
pushad |
; Çàäàòü ðåæèì CHS |
mov [ATAAddressMode],0 |
; Ïîñëàòü ATA-êîìàíäó ïåðåäà÷è ïàêåòíîé êîìàíäû |
mov [ATAFeatures],0 |
mov [ATASectorCount],0 |
mov [ATASectorNumber],0 |
; Çàãðóçèòü ðàçìåð ïåðåäàâàåìîãî áëîêà |
mov AX,[CDBlockSize] |
mov [ATACylinder],AX |
mov [ATAHead],0 |
mov [ATACommand],0A0h |
call SendCommandToHDD_1 |
; call test_mario79 |
cmp [DevErrorCode],0 ;ïðîâåðèòü êîä îøèáêè |
jne @@End_8 ;çàêîí÷èòü, ñîõðàíèâ êîä îøèáêè |
|
; Îæèäàíèå ãîòîâíîñòè äèñêîâîäà ê ïðèåìó |
; ïàêåòíîé êîìàíäû |
mov DX,[ATABasePortAddr] |
add DX,7 ;ïîðò 1õ7h |
@@WaitDevice0: |
call change_task |
; Ïðîâåðèòü âðåìÿ âûïîëíåíèÿ êîìàíäû |
mov EAX,[timer_ticks] |
sub EAX,[TickCounter_1] |
cmp EAX,BSYWaitTime |
ja @@Err1_1 ;îøèáêà òàéì-àóòà |
; Ïðîâåðèòü ãîòîâíîñòü |
in AL,DX |
test AL,80h ;ñîñòîÿíèå ñèãíàëà BSY |
jnz @@WaitDevice0 |
test AL,1 ;ñîñòîÿíèå ñèãíàëà ERR |
jnz @@Err6 |
test AL,08h ;ñîñòîÿíèå ñèãíàëà DRQ |
jz @@WaitDevice0 |
; Ïîñëàòü ïàêåòíóþ êîìàíäó |
cli |
mov DX,[ATABasePortAddr] |
mov AX,[PacketCommand] |
out DX,AX |
mov AX,[PacketCommand+2] |
out DX,AX |
mov AX,[PacketCommand+4] |
out DX,AX |
mov AX,[PacketCommand+6] |
out DX,AX |
mov AX,[PacketCommand+8] |
out DX,AX |
mov AX,[PacketCommand+10] |
out DX,AX |
sti |
; Îæèäàíèå ãîòîâíîñòè äàííûõ |
mov DX,[ATABasePortAddr] |
add DX,7 ;ïîðò 1õ7h |
@@WaitDevice1: |
call change_task |
; Ïðîâåðèòü âðåìÿ âûïîëíåíèÿ êîìàíäû |
mov EAX,[timer_ticks] |
sub EAX,[TickCounter_1] |
cmp EAX,MaxCDWaitTime |
ja @@Err1_1 ;îøèáêà òàéì-àóòà |
; Ïðîâåðèòü ãîòîâíîñòü |
in AL,DX |
test AL,80h ;ñîñòîÿíèå ñèãíàëà BSY |
jnz @@WaitDevice1 |
test AL,1 ;ñîñòîÿíèå ñèãíàëà ERR |
jnz @@Err6_temp |
test AL,08h ;ñîñòîÿíèå ñèãíàëà DRQ |
jz @@WaitDevice1 |
cli |
; Ïðèíÿòü áëîê äàííûõ îò êîíòðîëëåðà |
mov EDI,[CDDataBuf_pointer] ;0x7000 ;CDDataBuf |
; Çàãðóçèòü àäðåñ ðåãèñòðà äàííûõ êîíòðîëëåðà |
mov DX,[ATABasePortAddr] ;ïîðò 1x0h |
; Çàãðóçèòü â ñ÷åò÷èê ðàçìåð áëîêà â áàéòàõ |
mov CX,[CDBlockSize] |
; Âû÷èñëèòü ðàçìåð áëîêà â 16-ðàçðÿäíûõ ñëîâàõ |
shr CX,1 ;ðàçäåëèòü ðàçìåð áëîêà íà 2 |
; Ïðèíÿòü áëîê äàííûõ |
cld |
rep insw |
sti |
; Óñïåøíîå çàâåðøåíèå ïðèåìà äàííûõ |
jmp @@End_8 |
|
; Çàïèñàòü êîä îøèáêè |
@@Err1_1: |
mov [DevErrorCode],1 |
jmp @@End_8 |
@@Err6_temp: |
mov [DevErrorCode],7 |
jmp @@End_8 |
@@Err6: |
mov [DevErrorCode],6 |
|
@@End_8: |
popad |
ret |
|
|
|
;*********************************************** |
;* ÏÎÑËÀÒÜ ÓÑÒÐÎÉÑÒÂÓ ATAPI ÏÀÊÅÒÍÓÞ ÊÎÌÀÍÄÓ, * |
;* ÍÅ ÏÐÅÄÓÑÌÀÒÐÈÂÀÞÙÓÞ ÏÅÐÅÄÀ×È ÄÀÍÍÛÕ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç * |
;* ãëîáàëüíûå ïåðìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà; * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå; * |
;* PacketCommand - 12-áàéòíûé êîìàíäíûé ïàêåò. * |
;*********************************************** |
SendPacketNoDatCommand: |
pushad |
; Çàäàòü ðåæèì CHS |
mov [ATAAddressMode],0 |
; Ïîñëàòü ATA-êîìàíäó ïåðåäà÷è ïàêåòíîé êîìàíäû |
mov [ATAFeatures],0 |
mov [ATASectorCount],0 |
mov [ATASectorNumber],0 |
mov [ATACylinder],0 |
mov [ATAHead],0 |
mov [ATACommand],0A0h |
call SendCommandToHDD_1 |
cmp [DevErrorCode],0 ;ïðîâåðèòü êîä îøèáêè |
jne @@End_9 ;çàêîí÷èòü, ñîõðàíèâ êîä îøèáêè |
; Îæèäàíèå ãîòîâíîñòè äèñêîâîäà ê ïðèåìó |
; ïàêåòíîé êîìàíäû |
mov DX,[ATABasePortAddr] |
add DX,7 ;ïîðò 1õ7h |
@@WaitDevice0_1: |
call change_task |
; Ïðîâåðèòü âðåìÿ îæèäàíèÿ |
mov EAX,[timer_ticks] |
sub EAX,[TickCounter_1] |
cmp EAX,BSYWaitTime |
ja @@Err1_3 ;îøèáêà òàéì-àóòà |
; Ïðîâåðèòü ãîòîâíîñòü |
in AL,DX |
test AL,80h ;ñîñòîÿíèå ñèãíàëà BSY |
jnz @@WaitDevice0_1 |
test AL,1 ;ñîñòîÿíèå ñèãíàëà ERR |
jnz @@Err6_1 |
test AL,08h ;ñîñòîÿíèå ñèãíàëà DRQ |
jz @@WaitDevice0_1 |
; Ïîñëàòü ïàêåòíóþ êîìàíäó |
; cli |
mov DX,[ATABasePortAddr] |
mov AX,word [PacketCommand] |
out DX,AX |
mov AX,word [PacketCommand+2] |
out DX,AX |
mov AX,word [PacketCommand+4] |
out DX,AX |
mov AX,word [PacketCommand+6] |
out DX,AX |
mov AX,word [PacketCommand+8] |
out DX,AX |
mov AX,word [PacketCommand+10] |
out DX,AX |
; sti |
; Îæèäàíèå ïîäòâåðæäåíèÿ ïðèåìà êîìàíäû |
mov DX,[ATABasePortAddr] |
add DX,7 ;ïîðò 1õ7h |
@@WaitDevice1_1: |
call change_task |
; Ïðîâåðèòü âðåìÿ âûïîëíåíèÿ êîìàíäû |
mov EAX,[timer_ticks] |
sub EAX,[TickCounter_1] |
cmp EAX,MaxCDWaitTime |
ja @@Err1_3 ;îøèáêà òàéì-àóòà |
; Îæèäàòü îñâîáîæäåíèÿ óñòðîéñòâà |
in AL,DX |
test AL,80h ;ñîñòîÿíèå ñèãíàëà BSY |
jnz @@WaitDevice1_1 |
test AL,1 ;ñîñòîÿíèå ñèãíàëà ERR |
jnz @@Err6_1 |
test AL,40h ;ñîñòîÿíèå ñèãíàëà DRDY |
jz @@WaitDevice1_1 |
jmp @@End_9 |
|
; Çàïèñàòü êîä îøèáêè |
@@Err1_3: |
mov [DevErrorCode],1 |
jmp @@End_9 |
@@Err6_1: |
mov [DevErrorCode],6 |
@@End_9: |
popad |
ret |
|
;**************************************************** |
;* 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_1: |
pushad |
; Ïðîâåðèòü çíà÷åíèå êîäà ðåæèìà |
cmp [ATAAddressMode],1 |
ja @@Err2_4 |
; Ïðîâåðèòü êîððåêòíîñòü íîìåðà êàíàëà |
mov BX,[ChannelNumber] |
cmp BX,1 |
jb @@Err3_4 |
cmp BX,2 |
ja @@Err3_4 |
; 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_4 |
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_2: |
call change_task |
; Ïðîâåðèòü âðåìÿ îæèäàíèÿ |
; dec ecx |
; cmp ecx,0 |
; je @@Err1 |
mov eax,[timer_ticks] |
sub eax,[TickCounter_1] |
cmp eax,BSYWaitTime ;300 ;îæèäàòü 3 ñåê. |
ja @@Err1_4 ;îøèáêà òàéì-àóòà |
; Ïðî÷èòàòü ðåãèñòð ñîñòîÿíèÿ |
in AL,DX |
; Ïðîâåðèòü ñîñòîÿíèå ñèãíàëà BSY |
test AL,80h |
jnz @@WaitHDReady_2 |
; Ïðîâåðèòü ñîñòîÿíèå ñèãíàëà DRQ |
test AL,08h |
jnz @@WaitHDReady_2 |
; 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_4 |
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_10 |
; Çàïèñàòü êîä îøèáêè |
@@Err1_4: |
mov [DevErrorCode],1 |
jmp @@End_10 |
@@Err2_4: |
mov [DevErrorCode],2 |
jmp @@End_10 |
@@Err3_4: |
mov [DevErrorCode],3 |
jmp @@End_10 |
@@Err4_4: |
mov [DevErrorCode],4 |
jmp @@End_10 |
@@Err5_4: |
mov [DevErrorCode],5 |
; Çàâåðøåíèå ðàáîòû ïðîãðàììû |
@@End_10: |
sti |
popad |
ret |
|
;************************************************* |
;* ÎÆÈÄÀÍÈÅ ÃÎÒÎÂÍÎÑÒÈ ÓÑÒÐÎÉÑÒÂÀ Ê ÐÀÁÎÒÅ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà; * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå. * |
;************************************************* |
WaitUnitReady: |
pusha |
; Çàïîìíèòü âðåìÿ íà÷àëà îïåðàöèè |
mov EAX,[timer_ticks] |
mov [WURStartTime],EAX |
; Î÷èñòèòü áóôåð ïàêåòíîé êîìàíäû |
call clear_packet_buffer |
; Ñôîðìèðîâàòü êîìàíäó TEST UNIT READY |
mov [PacketCommand],word 00h |
; ÖÈÊË ÎÆÈÄÀÍÈß ÃÎÒÎÂÍÎÑÒÈ ÓÑÒÐÎÉÑÒÂÀ |
@@SendCommand: |
; Ïîäàòü êîìàíäó ïðîâåðêè ãîòîâíîñòè |
call SendPacketNoDatCommand |
call change_task |
; Ïðîâåðèòü êîä îøèáêè |
cmp [DevErrorCode],0 |
je @@End_11 |
; Ïðîâåðèòü âðåìÿ îæèäàíèÿ ãîòîâíîñòè |
mov EAX,[timer_ticks] |
sub EAX,[WURStartTime] |
cmp EAX,MaxCDWaitTime |
jb @@SendCommand |
; Îøèáêà òàéì-àóòà |
mov [DevErrorCode],1 |
@@End_11: |
popa |
ret |
|
|
;************************************************* |
;* ÇÀÃÐÓÇÈÒÜ ÍÎÑÈÒÅËÜ Â ÄÈÑÊÎÂÎÄ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà; * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå. * |
;************************************************* |
LoadMedium: |
pusha |
; Î÷èñòèòü áóôåð ïàêåòíîé êîìàíäû |
call clear_packet_buffer |
; Ñôîðìèðîâàòü êîìàíäó START/STOP UNIT |
; Çàäàòü êîä êîìàíäû |
mov [PacketCommand],word 1Bh |
; Çàäàòü îïåðàöèþ çàãðóçêè íîñèòåëÿ |
mov [PacketCommand+4],word 00000011b |
; Ïîäàòü êîìàíäó |
call SendPacketNoDatCommand |
popa |
ret |
|
;************************************************* |
;* ÈÇÂËÅ×Ü ÍÎÑÈÒÅËÜ ÈÇ ÄÈÑÊÎÂÎÄÀ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà; * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå. * |
;************************************************* |
UnloadMedium: |
pusha |
; Î÷èñòèòü áóôåð ïàêåòíîé êîìàíäû |
call clear_packet_buffer |
; Ñôîðìèðîâàòü êîìàíäó START/STOP UNIT |
; Çàäàòü êîä êîìàíäû |
mov [PacketCommand],word 1Bh |
; Çàäàòü îïåðàöèþ èçâëå÷åíèÿ íîñèòåëÿ |
mov [PacketCommand+4],word 00000010b |
; Ïîäàòü êîìàíäó |
call SendPacketNoDatCommand |
popa |
ret |
|
;************************************************* |
;* ÎÏÐÅÄÅËÈÒÜ ÎÁÙÅÅ ÊÎËÈ×ÅÑÒÂÎ ÑÅÊÒÎÐΠÍÀ ÄÈÑÊÅ * |
;* Âõîäíûå ïàðàìåòðû ïåðåäàþòñÿ ÷åðåç ãëîáàëüíûå * |
;* ïåðåìåííûå: * |
;* ChannelNumber - íîìåð êàíàëà; * |
;* DiskNumber - íîìåð äèñêà íà êàíàëå. * |
;************************************************* |
ReadCapacity: |
pusha |
; Î÷èñòèòü áóôåð ïàêåòíîé êîìàíäû |
call clear_packet_buffer |
; Çàäàòü ðàçìåð áóôåðà â áàéòàõ |
mov [CDBlockSize],8 |
; Ñôîðìèðîâàòü êîìàíäó READ CAPACITY |
mov [PacketCommand],word 25h |
; Ïîäàòü êîìàíäó |
call SendPacketDatCommand |
popa |
ret |
|
clear_packet_buffer: |
; Î÷èñòèòü áóôåð ïàêåòíîé êîìàíäû |
mov [PacketCommand],dword 0 |
mov [PacketCommand+4],dword 0 |
mov [PacketCommand+8],dword 0 |
ret |
|