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figdor32 |
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ERROR_FileError: |
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PUSH AX |
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MOV DX, STR_ErrFile |
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CALL DOS_PrintString |
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POP AX |
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CALL WriteLastDOSError |
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JMP Exit |
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ERROR_GeneralDOSError: |
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; AX has the error code |
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PUSH AX |
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MOV DX, STR_ErrOtherDOS |
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CALL DOS_PrintString |
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POP AX |
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CALL WriteLastDOSError |
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JMP Exit |
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ERROR_GeneralError: |
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; AX has the error code, and it'll be a custom error, TODO: implement |
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MOV DX, STR_ErrOther |
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CALL DOS_PrintString |
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JMP Exit |
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FileCloseError: |
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PUSH AX |
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MOV DX, STR_ErrCloseFile |
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CALL DOS_PrintString |
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POP AX |
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CALL WriteLastDOSError |
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INT 20h ; Note the early exit |
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WriteLastDOSError: |
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CALL DecodeDOSError |
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CALL DOS_PrintString |
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RET |
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DecodeDOSError: |
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; All right, so |
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MOV BX, AX ; We first copy the error code into BX |
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SHL BX, 1 ; Then multiply it by 2 to get the proper offset in the table |
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MOV SI, DOS_ERRORS ; Load in the table address |
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ADD SI, BX ; And add the offset we have in BX |
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MOV DX, [CS:SI] ; And finally, return the proper string address |
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RET ; This needs no explanation, but I forgot the RET statement once and was wondering why in the hell is DOSBox crashing on me |
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include 'DOSERR.ASM' |
