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Assembly Source File | 1993-10-17 | 33.9 KB | 902 lines

;******************************************************************************** ; IDE-INFO.ASM ; VERSION: 1.0 ; AUTHOR: Köhntark ; DATE: Sept 26 1993 ;******************************************************************************** MAIN SEGMENT BYTE ASSUME cs:main,ds:main,ss:nothing ;all part in one segment=com file org 100h START: mov ah,09 lea dx,[FIRST_MSG] ;display KREATOR's msg int 21h ;******************************** ; Determine # of IDE devices ;******************************** mov ax,0040h mov ds,ax ;DS=0040 mov si,0075h mov cl,BYTE PTR [si] ; cmp cl,03 jb CONT mov ah,09 lea dx,[ERROR_MSG] ;more than 2 HD devices int 21h int 20h CONT: push cs pop ds ;DS=CS ;******************************** ; Wait until Controller not busy ;******************************** mov dx,01F7h in al,dx cmp al,50h jne AGAIN ;******************************** ; Specify 1st / 2nd Drive ;******************************** AGAIN: mov dx,01F6h cmp cl,02 je SEC_DRIVE mov al,0A0h jmp short DO_IT SEC_DRIVE: mov al,0B0h DO_IT: out dx,al inc dx ;******************************** ; Send Identify Drive Command ;******************************** mov al,0ECh out dx,ax ;******************************** ; Wait for Data Ready ;******************************** NOT_READY: in ax,dx cmp al,58h jne NOT_READY ;**************************************** ; Get / Store Identify drive information ;**************************************** mov dx,01F0h push cx ;save # of IDE devices mov cx,0FFh mov di,OFFSET DATA_BUFFER MORE: in ax,dx xchg ah,al stosw loop MORE ;**************************************** ; Display Identify drive information ;**************************************** call DDISPLAY pop cx ;restore # of IDE devices loop AGAIN ;next IDE drive if any... int 20h ;***************************************************************************** DDISPLAY: ;******************************** ; Display Results ;******************************** mov ah,09 lea dx,[MSG49] int 21h mov bx,WORD PTR [General_configuration] xchg bh,bl test bx,0000000000000010b jz GO_ON lea dx,[MSG35] int 21h GO_ON: test bx,0000000000000100b jz GO_ON1 lea dx,[MSG36] int 21h GO_ON1: test bx,0000000000001000b jz GO_ON2 lea dx,[MSG37] int 21h GO_ON2: test bx,0000000000010000b jz GO_ON3 lea dx,[MSG38] int 21h GO_ON3: test bx,0000000000100000b jz GO_ON4 lea dx,[MSG39] int 21h GO_ON4: test bx,0000000001000000b jz GO_ON5 lea dx,[MSG40] int 21h GO_ON5: test bx,0000000010000000b jz GO_ON6 lea dx,[MSG41] int 21h GO_ON6: test bx,0000000100000000b jz GO_ON7 lea dx,[MSG42] int 21h GO_ON7: test bx,0000001000000000b jz GO_ON8 lea dx,[MSG43] int 21h GO_ON8: test bx,0000010000000000b jz GO_ON9 lea dx,[MSG44] int 21h GO_ON9: test bx,0000100000000000b jz GO_ON10 lea dx,[MSG45] int 21h GO_ON10: test bx,0001000000000000b jz GO_ON11 lea dx,[MSG46] int 21h GO_ON11: test bx,0010000000000000b jz GO_ON12 lea dx,[MSG47] int 21h GO_ON12: test bx,0100000000000000b jz GO_ON13 lea dx,[MSG48] int 21h GO_ON13: lea dx,[LINE] int 21h lea dx,[MSG1] int 21h mov bx,WORD PTR [General_configuration] call BIN_TO_HEX ;---------------------------------------------------------------------------- lea dx,[MSG2] int 21h mov bx,WORD PTR [Number_of_cylinders] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG4] int 21h mov bx,WORD PTR [Number_of_heads] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG5] int 21h mov bx,WORD PTR [Number_unformatted_bytes_per_track] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG6] int 21h mov bx,WORD PTR [Number_unformatted_bytes_per_sector] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG7] int 21h mov bx,WORD PTR [Number_sectors_per_track] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG8] int 21h mov bx,WORD PTR [Vendor_unique1] call BIN_TO_HEX mov bx,WORD PTR [Vendor_unique1 + 1] call BIN_TO_HEX mov bx,WORD PTR [Vendor_unique1 + 2] call BIN_TO_HEX ;---------------------------------------------------------------------------- lea dx,[MSG9] int 21h mov WORD PTR [Serial_number + 18],'$' lea dx,[Serial_number] int 21h ;---------------------------------------------------------------------------- lea dx,[MSG10] int 21h mov bx,WORD PTR [Buffer_type] call DEC16OUT cmp BYTE PTR [Buffer_type + 1],01 lea dx,[MSG52] je SKIP0 cmp BYTE PTR [Buffer_type + 1],02 lea dx,[MSG53] je SKIP0 cmp BYTE PTR [Buffer_type + 1],03 lea dx,[MSG54] je SKIP0 lea dx,[MSG55] ;=0 not specified SKIP0: int 21h ;---------------------------------------------------------------------------- lea dx,[MSG11] int 21h mov bx,WORD PTR [Buffer_size] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG12] int 21h mov bx,WORD PTR [Num_ECC_bytes_read_write_long_cmds] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG13] int 21h mov WORD PTR [Firmware_revision + 6],'$' lea dx,[Firmware_revision] int 21h ;---------------------------------------------------------------------------- lea dx,[MSG14] int 21h mov WORD PTR [Model_number + 39],'$' lea dx,[Model_number] int 21h ;---------------------------------------------------------------------------- lea dx,[MSG15] int 21h mov bx,WORD PTR [Vendor_unique2] call DEC16OUT cmp BYTE PTR [Vendor_unique2 + 1],00 je RWMCNI lea dx,[MSG51] jmp short SKIP1 RWMCNI: ;read / write multiple command not implemented lea dx,[MSG50] SKIP1: int 21h ;---------------------------------------------------------------------------- lea dx,[MSG16] int 21h mov bx,WORD PTR [Doubleword_performance] call DEC16OUT cmp WORD PTR [Doubleword_performance],00 je NO_DD_IO lea dx,[MSG33] jmp short SKIP2 NO_DD_IO: lea dx,[MSG34] SKIP2: int 21h ;---------------------------------------------------------------------------- lea dx,[MSG17] int 21h mov bx,WORD PTR [Capabilities] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG19] int 21h mov bx,WORD PTR [PIO_data_transfer_cycle_timing_mode] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG20] int 21h mov bx,WORD PTR [DMA_data_transfer_cycle_timing_mode] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG22] int 21h mov bx,WORD PTR [Number_of_current_cylinders] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG23] int 21h mov bx,WORD PTR [Number_of_current_heads] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG24] int 21h mov bx,WORD PTR [Number_of_current_sectors_per_track] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG25] int 21h mov bx,WORD PTR [Current_capacity_in_sectors] call BIN_TO_HEX mov bx,WORD PTR [Current_capacity_in_sectors + 1] call BIN_TO_HEX ;---------------------------------------------------------------------------- lea dx,[MSG27] int 21h mov bx,WORD PTR [Total_number_user_addressable_sectors] call BIN_TO_HEX mov bx,WORD PTR [Total_number_user_addressable_sectors + 1] call BIN_TO_HEX ;---------------------------------------------------------------------------- lea dx,[MSG28] int 21h mov bx,WORD PTR [Single_word_DMA_transfer_mode] call DEC16OUT ;---------------------------------------------------------------------------- lea dx,[MSG29] int 21h mov bx,WORD PTR [Multiword_DMA_transfer_mode] call DEC16OUT ret ;**************************************************************************** BIN_TO_HEX: xchg bh,bl push cx ;save registers push dx push ax mov ch,04 ;# of digits to process ROTATE: mov cl,04 ;# of bits to rotate rol bx,cl ;rotate bx l to r mov al,bl ;move to al (2 digits) and al,0Fh ;mask off upper digit add al,30h ;convert to ASCII cmp al,3Ah ;is it > 9? jl PRINTIT ;jump of digit =0 to 9 add al,07h ;digit is A to F PRINTIT: mov dl,al mov ah,2 ;INT 21h function int 21h ;print character dec ch jnz ROTATE pop ax ;restore registers pop dx pop cx ret ;**************************************************************************** ;Routine to convert from internal 16-bit binary to ASCII decimal DEC16OUT: ;------------------------ ;A binary number is in DX ;------------------------ xchg bh,bl xchg bx,dx push DS ;Save registers push DI push DX push CX push AX ;-------------------------- ;Put the digits in a buffer ;-------------------------- xor cx,cx ;Initialize the counter lea di,[TBUFF] ;Point to the buffer DEC16OUT1: push cx ;Save CX mov ax,dx ;Numerator xor dx,dx ;Clear upper half mov cx,10 ;Divisor of 10 div cx ;Divide dx:ax by cx xchg ax,dx ;Get quotient add al,30h ;Add 30H mov [di],al ;Put in buffer inc di ;Next byte pop cx ;Restore CX inc cx ;Count the digit cmp dx,0 ;Done? jnz DEC16OUT1 ;------------------- ;Dump the buffer out ;------------------- DEC16OUT2: dec di ;Back up through the buffer mov al,[di] ;Get byte from buffer call STDOUT ;Send it out loop DEC16OUT2 pop AX ;Restore registers pop CX pop DX pop DI pop DS ret ;Return STDOUT: push dx mov dl,al mov ah,02 ;INT 21h function int 21h ;print character pop dx ret ;**************************************************************************** FIRST_MSG db '════════════════════════════════',13d,10d db ' Köhntark',027h,'s IDE-INFO ',13d,10d db ' Version 1.0 (C) 1993 ',13d,10d db '════════════════════════════════',13d,10d,13d,10d,'$' MSG1 db 13d,10d,' General configuration: ','$' MSG2 db 13d,10d,' Number of cylinders: ','$' MSG4 db 13d,10d,' Number of heads: ','$' MSG5 db 13d,10d,' # of unformatted bytes per track: ','$' MSG6 db 13d,10d,' # of unformatted bytes per sector: ','$' MSG7 db 13d,10d,' Number sectors per track: ','$' MSG8 db 13d,10d,' Vendor unique: ','$' MSG9 db 13d,10d,' Serial number: ','$' MSG10 db 13d,10d,' Buffer type: ','$' MSG11 db 13d,10d,' Buffer size (in 512 bytes): ','$' MSG12 db 13d,10d,' # of ECC bytes R/W long cmds: ','$' MSG13 db 13d,10d,' Firmware revision: ','$' MSG14 db 13d,10d,' Model number: ','$' MSG15 db 13d,10d,' # of sectors transferred/interrupt: ','$' MSG16 db 13d,10d,' Doubleword performance: ','$' MSG17 db 13d,10d,' Capabilities: ','$' MSG19 db 13d,10d,'PIO data transfer cycle timing mode: ','$' MSG20 db 13d,10d,'DMA data transfer cycle timing mode: ','$' MSG22 db 13d,10d,' # of current cylinders: ','$' MSG23 db 13d,10d,' # of current heads: ','$' MSG24 db 13d,10d,' # of current sectors per track: ','$' MSG25 db 13d,10d,' Current capacity in sectors: ','$' MSG27 db 13d,10d,'Total # of user addressable sectors: ','$' MSG28 db 13d,10d,' Single word DMA transfer mode: ','$' MSG29 db 13d,10d,' Multiword DMA transfer mode: ','$' MSG31 db 13d,10d,' Vendor unique: ','$' MSG33 db ' => Able to do Double word I/O','$' MSG34 db ' => NOT Able to do Double word I/O','$' MSG35 db 13d,10d,' Hard sectored','$' MSG36 db 13d,10d,' Soft sectored','$' MSG37 db 13d,10d,' Not MFM encoded','$' MSG38 db 13d,10d,' Head switch time > 15 microseconds','$' MSG39 db 13d,10d,' Spindle motor control option implemented','$' MSG40 db 13d,10d,' Fixed drive','$' MSG41 db 13d,10d,' Removable cartridge drive','$' MSG42 db 13d,10d,' Disk transfer rate <= 5Mbs','$' MSG43 db 13d,10d,' Disk transfer rate > 5Mbs but <= 10Mbs','$' MSG44 db 13d,10d,' Disk transfer rate > 10 Mbs','$' MSG45 db 13d,10d,' Rotational speed tolerance is > 0,5%','$' MSG46 db 13d,10d,' Data strobe offset option available','$' MSG47 db 13d,10d,' Track offset option available','$' MSG48 db 13d,10d,' Format speed tolerance gap required','$' MSG49 db 13d,10d,' General configuration bit-significant information:' LINE: db 13d,10d,'═══════════════════════════════════════════════════════════════════════════════','$' MSG50 db ' => R/W multiple commands not implemented','$' MSG51 db ' => # sectors transferred / interrupt','$' MSG52 db ' => Single Ported / Multisector','$' MSG53 db ' => Dual Ported / Multisector','$' MSG54 db ' => Dual Ported/Multisector/Caching','$' MSG55 db ' => Not specified','$' ERROR_MSG db 13d,10d,' More than 2 HD devices reported by BIOS','$' ;******************************************************************************** DATA_BUFFER: General_configuration dw 0 Number_of_cylinders dw 0 Reserved dw 0 Number_of_heads dw 0 Number_unformatted_bytes_per_track dw 0 Number_unformatted_bytes_per_sector dw 0 Number_sectors_per_track dw 0 Vendor_unique1 dw 0,0,0 Serial_number dw 10 dup (0) ;(20 ASCII characters, 0000h=not specified) Buffer_type dw 0 Buffer_size dw 0 ;in 512 byte increments (0000h=not specified) Num_ECC_bytes_read_write_long_cmds dw 0 ;(0000h=not spec'd) Firmware_revision dw 4 dup (0) ;(8 ASCII characters, 0000h=not specified) Model_number dw 20 dup (0) ;(40 ASCII characters, 0000h=not specified) Vendor_unique2 dw 0 ;15-8 Vendor unique ;7-0 00h = Read/write multiple commands not implemented ;xxh = Maximum number of sectors that can be transferred ; per interrupt on read and write multiple commands Doubleword_performance dw 0 ;0000h = cannot perform doubleword I/O Included for backwards ;0001h = can perform doubleword I/O Compatible VU use Capabilities dw 0 ;15-10 0=reserved ;9 1=LBA supported ;8 1=DMA supported ;7- 0 Vendor unique Reserved2 dw 0 PIO_data_transfer_cycle_timing_mode dw 0 ;15-8 PIO data transfer cycle timing mode ;7-0 Vendor unique DMA_data_transfer_cycle_timing_mode dw 0 ;15-8 DMA data transfer cycle timing mode ;7-0 Vendor unique Reserved3 dw 0 ;15-1 Reserved ;1=the fields reported in words 54-58 are valid ;0=the fields reported in words 54-58 may be valid Number_of_current_cylinders dw 0 Number_of_current_heads dw 0 Number_of_current_sectors_per_track dw 0 Current_capacity_in_sectors dw 0,0 Reserved4 dw 0 ;15-9 Reserved ;8 1 = Multiple sector setting is valid ;7-0 xxh = Current setting for number of sectors that can be ; transferred per interrupt on R/W multiple commands Total_number_user_addressable_sectors dw 0,0 ;(LBA mode only) Single_word_DMA_transfer_mode dw 0 ;15-8 Single word DMA transfer mode active ;7-0 Single word DMA transfer modes supported Multiword_DMA_transfer_mode dw 0 ;15-8 Multiword DMA transfer mode active ;7-0 Multiword DMA transfer modes supported Reserved5 dw 64 dup (0) ;Reserved Vendor_unique3 dw 32 dup (0) ;Vendor unique Reserved6 dw 96 dup (0) ;Reserved TBUFF dd 0 ;******************************************************************************** MAIN ENDS END START ;******************************************************************************** comment $ --------------------- Technical Information --------------------- Identify drive Command The Identify Drive command enables the host to receive parameter information from the drive. When the command is issued, the drive sets BSY, stores the required parameter information in the sector buffer, sets DRQ, and generates an interrupt. The host then reads the information out of the sector buffer. The parameter words in the buffer have the arrangement and meanings defined in Table 1. All reserved bits or words shall be zero. Table 1 - Identify drive information ;=======-================================================================== ;| Word | | ;|-------+------------------------------------------------------------------| ;| 0 | General configuration bit-significant information: | ;| | 15 0 reserved for non-magnetic drives | ;| | 14 1=format speed tolerance gap required | ;| | 13 1=track offset option available | ;| | 12 1=data strobe offset option available | ;| | 11 1=rotational speed tolerance is > 0,5% | ;| | 10 1=disk transfer rate > 10 Mbs | ;| | 9 1=disk transfer rate > 5Mbs but <= 10Mbs | ;| | 8 1=disk transfer rate <= 5Mbs | ;| | 7 1=removable cartridge drive | ;| | 6 1=fixed drive | ;| | 5 1=spindle motor control option implemented | ;| | 4 1=head switch time > 15 usec | ;| | 3 1=not MFM encoded | ;| | 2 1=soft sectored | ;| | 1 1=hard sectored | ;| | 0 0=reserved | ;| 1 | Number of cylinders | ;| 2 | Reserved | ;| 3 | Number of heads | ;| 4 | Number of unformatted bytes per track | ;| 5 | Number of unformatted bytes per sector | ;| 6 | Number of sectors per track | ;| 7-9 | Vendor unique | ;| 10-19 | Serial number (20 ASCII characters, 0000h=not specified) | ;| 20 | Buffer type | ;| 21 | Buffer size in 512 byte increments (0000h=not specified) | ;| 22 | # of ECC bytes avail on read/write long cmds (0000h=not spec'd) | ;| 23-26 | Firmware revision (8 ASCII characters, 0000h=not specified) | ;| 27-46 | Model number (40 ASCII characters, 0000h=not specified) | ;| 47 | 15-8 Vendor unique | ;| | 7-0 00h = Read/write multiple commands not implemented | ;| | xxh = Maximum number of sectors that can be transferred | ;| | per interrupt on read and write multiple commands | ;| 48 | 0000h = cannot perform doubleword I/O Included for backwards | ;| | 0001h = can perform doubleword I/O Compatible VU use | ;| 49 | Capabilities | ;| | 15-10 0=reserved | ;| | 9 1=LBA supported | ;| | 8 1=DMA supported | ;| | 7- 0 Vendor unique | ;| 50 | Reserved | ;| 51 | 15-8 PIO data transfer cycle timing mode | ;| | 7-0 Vendor unique | ;| 52 | 15-8 DMA data transfer cycle timing mode | ;| | 7-0 Vendor unique | ;| 53 | 15-1 Reserved | ;| | 0 1=the fields reported in words 54-58 are valid | ;| | 0=the fields reported in words 54-58 may be valid | ;| 54 | Number of current cylinders | ;| 55 | Number of current heads | ;| 56 | Number of current sectors per track | ;| 57-58 | Current capacity in sectors | ;| 59 | 15-9 Reserved | ;| | 8 1 = Multiple sector setting is valid | ;| | 7-0 xxh = Current setting for number of sectors that can be | ;| | transferred per interrupt on R/W multiple commands | ;| 60-61 | Total number of user addressable sectors (LBA mode only) | ;| 62 | 15-8 Single word DMA transfer mode active | ;| | 7-0 Single word DMA transfer modes supported (see 11-3a) | ;| 63 | 15-8 Multiword DMA transfer mode active | ;| | 7-0 Multiword DMA transfer modes supported (see 11-3b) | ;| 64-127| Reserved | ;|128-159| Vendor unique | ;|160-255| Reserved | ;========================================================================== --------------------- Description of Fields --------------------- --------------------------- Word 1: Number of cylinders --------------------------- The number of user-addressable cylinders in the default translation mode. --------------------------- Word 3: Number of heads --------------------------- The number of user-addressable heads in the default translation mode. --------------------------------------------- Word 4: Number of unformatted bytes per track --------------------------------------------- The number of unformatted bytes per translated track in the default translation mode. ---------------------------------------------- Word 5: Number of unformatted bytes per sector ---------------------------------------------- The number of unformatted bytes per sector in the default translation mode. ----------------------------------- Word 6: Number of sectors per track ------------------------------------ The number of user-addressable sectors per track in the default translation mode. ------------------------- Word 10-19: Serial Number ------------------------- The contents of this field are right justified and padded with spaces (20h). -------------------- Word 20: Buffer Type -------------------- The contents of the field are determined by the manufacturer. 000h = not specified. 0001h = a single ported single sector buffer which is not capable of simultaneous data transfers to or from the host and the disk. 0002h = a dual ported multi-sector buffer capable of simultaneous data transfers to or from the host and the disk. 0003h = a dual ported multi-sector buffer capable of simultaneous transfers with a read caching capability. 0004-FFFFh = reserved These codes are typically not used by the operating system, however, they are useful for diagnostic programs which perform initialization routines e.g. a different interleave may be desirable for 0001h vs 0002h or 0003h. -------------------------------------------------------- Word 22: ECC bytes available on read/write long commands -------------------------------------------------------- If the contents of this field are set to a value other than 4, the only way to use this information is via the Set Features commands. ----------------------------- Word 23-26: Firmware revision ----------------------------- The contents of this field are left justified and padded with spaces (20h). ------------------------ Word 27-46: Model number ------------------------ The contents of this field are left justified and padded with spaces (20h). -------------------------------------------- Word 51: PIO data transfer cycle timing mode -------------------------------------------- N/A -------------------------------------------- Word 52: DMA data transfer cycle timing mode -------------------------------------------- N/A The contents of this word shall be ignored if Words 62 or 63 are supported. ------------------------------------ Word 54: Number of current cylinders ------------------------------------- The number of user-addressable cylinders in the current translation mode. -------------------------------- Word 55: Number of current heads -------------------------------- The number of user-addressable heads in the current translation mode. -------------------------------------------- Word 56: Number of current sectors per track -------------------------------------------- The number of user-addressable sectors per track in the current translation mode. --------------------------------------- Word 57-58: Current capacity in sectors --------------------------------------- The current capacity in sectors excludes all sectors used for device-specific purposes. The number of sectors of available capacity may be calculated as: (Number of current cylinders * Number of current heads * Number of current sectors per track) -------------------------------- Word 59: Multiple sector setting -------------------------------- If the valid bit is set, then bits 7-0 reflect the number of sectors currently set to transfer on a Read or Write Multiple command. ---------------------------------------------------- Word 60-61: Total number of user addressable sectors ---------------------------------------------------- If the drive supports LBA Mode, these words reflect the total number of user addressable sectors. This value does not depend on the current drive geometry. If the drive does not support LBA mode, these words shall be set to 0. --------------------------------- Word 62: Single word DMA transfer --------------------------------- The low order byte identifies by bit all of the Modes which are supported e.g. if Mode 0 is supported, bit 0 is set. The high order byte contains a single bit set to indicate which mode is active. ------------------------------- Word 63: Multiword DMA transfer ------------------------------- The low order byte identifies by bit all of the Modes which are supported e.g. if Mode 0 is supported, bit 0 is set. The high order byte contains a single bit set to indicate which mode is active. $