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https://github.com/microsoft/MS-DOS.git
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138 lines
4.4 KiB
NASM
138 lines
4.4 KiB
NASM
TITLE FORMAT Messages
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FALSE EQU 0
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TRUE EQU NOT FALSE
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IBMVER EQU FALSE
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.xlist
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.xcref
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INCLUDE DOSSYM.ASM
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.cref
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.list
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CODE SEGMENT PUBLIC 'CODE'
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ASSUME CS:CODE,DS:CODE,ES:CODE
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PUBLIC BADVER,SNGMSG,SNGDRV,HRDMSG,HRDDRV,REPORT
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PUBLIC LABPRMT,TARGMSG,TARGDRV
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PUBLIC SYSTRAN,CRLFMSG,INVCHR,INVDRV,INVPAR
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PUBLIC SYSMSG,SYSDRV,FRMTERR,NOTSYS,NOUSE,MEMEX
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PUBLIC WAITYN
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EXTRN PRINT:NEAR,CRLF:NEAR,UNSCALE:NEAR,DISP32BITS:NEAR
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EXTRN FDSKSIZ:DWORD,SECSIZ:WORD,CLUSSIZ:WORD,SYSSIZ:DWORD
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EXTRN BADSIZ:DWORD
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;Wait for "Y" or "N"
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WAITYN:
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MOV DX,OFFSET MORMSG ;Point to the message
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CALL PRINT ;And print it
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MOV AX,(STD_CON_INPUT_FLUSH SHL 8) OR STD_CON_INPUT
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;Flush buffer and wait for keystroke
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INT 21H ;Input character now a Y or N
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AND AL,0DFH ;So lower case works too
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CMP AL,"Y"
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JZ WAIT20
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CMP AL,"N"
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JZ WAIT10
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CALL CRLF
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JMP SHORT WAITYN
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WAIT10: STC
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WAIT20: RET
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;*********************************************
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; Make a status report including the following information:
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; Total disk capacity
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; Total system area used
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; Total bad space allocated
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; Total data space available
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;NOTE:
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; The DISP32BITS routine prints the number in DI:SI followed
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; by the message pointed to by BX. If it is desired to print
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; a message before the number, point at the message with DX
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; and call PRINT.
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REPORT:
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MOV AX,WORD PTR FDSKSIZ
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MUL SECSIZ
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MOV CX,CLUSSIZ
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CALL UNSCALE
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MOV WORD PTR FDSKSIZ,AX
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MOV WORD PTR FDSKSIZ+2,DX
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MOV SI,AX
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MOV DI,DX
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MOV BX,OFFSET DSKSPC
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CALL DISP32BITS ;Report total disk space
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MOV SI,WORD PTR SYSSIZ
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MOV DI,WORD PTR SYSSIZ+2
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CMP SI,0
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JNZ SHOWSYS
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CMP DI,0
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JZ CHKBAD
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SHOWSYS:
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MOV BX,OFFSET SYSSPC
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CALL DISP32BITS ;Report space used by system
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CHKBAD:
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MOV SI,WORD PTR BADSIZ
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MOV DI,WORD PTR BADSIZ+2
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CMP SI,0
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JNZ SHOWBAD
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CMP DI,0
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JZ SHOWDATA
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SHOWBAD:
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MOV BX,OFFSET BADSPC
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CALL DISP32BITS ;Report space used by bad sectors
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SHOWDATA:
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MOV CX,WORD PTR FDSKSIZ
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MOV BX,WORD PTR FDSKSIZ+2
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SUB CX,WORD PTR BADSIZ
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SBB BX,WORD PTR BADSIZ+2
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SUB CX,WORD PTR SYSSIZ
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SBB BX,WORD PTR SYSSIZ+2
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MOV SI,CX
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MOV DI,BX
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MOV BX,OFFSET DATASPC
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CALL DISP32BITS ;Report space left for user
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RET
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BADVER DB "Incorrect DOS version",13,10,"$"
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SNGMSG DB "Insert new diskette for drive "
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SNGDRV DB "x:",13,10,"and strike any key when ready$"
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HRDMSG DB "Press any key to begin formatting "
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HRDDRV DB "x: $"
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SYSTRAN DB "System transferred",13,10,"$"
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MORMSG DB "Format another (Y/N)?$"
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CRLFMSG DB 13,10,"$"
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INVCHR DB "Invalid characters in volume label",13,10,"$"
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INVDRV DB "Invalid drive specification$"
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INVPAR DB "Invalid parameter$"
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TARGMSG DB "Re-insert diskette for drive "
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TARGDRV DB "x:",13,10,"and strike any key when ready$"
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SYSMSG DB "Insert DOS disk in drive "
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SYSDRV DB "x:",13,10,"and strike any key when ready$"
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FRMTERR DB "Format failure",13,10,13,10,"$"
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NOTSYS DB "Disk unsuitable for system disk",13,10,"$"
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NOUSE DB "Track 0 bad - disk unusable",13,10,"$"
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MEMEX DB "Insufficient memory for system transfer",13,10,"$"
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;Report messages
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DSKSPC DB " bytes total disk space",13,10,"$"
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SYSSPC DB " bytes used by system",13,10,"$"
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BADSPC DB " bytes in bad sectors",13,10,"$"
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DATASPC DB " bytes available on disk",13,10,13,10,"$"
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IF IBMVER
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PUBLIC ASGERR
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ASGERR DB "Cannot format an ASSIGNed drive. $"
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ENDIF
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LABPRMT DB "Volume label (11 characters, ENTER for none)? $"
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CODE ENDS
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END
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