47 lines
1.1 KiB
Plaintext
47 lines
1.1 KiB
Plaintext
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{*******************************************************}
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{ }
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{ Turbo Pascal Version 5.5 }
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{ Overlay Interface Unit }
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{ }
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{ Copyright (C) 1987, 1989 Borland International }
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{ }
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{*******************************************************}
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unit Overlay;
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{$D-,I-,S-}
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interface
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const
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ovrOk = 0;
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ovrError = -1;
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ovrNotFound = -2;
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ovrNoMemory = -3;
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ovrIOError = -4;
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ovrNoEMSDriver = -5;
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ovrNoEMSMemory = -6;
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const
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OvrResult: Integer = 0;
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OvrTrapCount: Word = 0;
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OvrLoadCount: Word = 0;
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OvrFileMode: Byte = 0;
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type
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OvrReadFunc = function(OvrSeg: Word): Integer;
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var
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OvrReadBuf: OvrReadFunc;
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procedure OvrInit(FileName: String);
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procedure OvrInitEMS;
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procedure OvrSetBuf(Size: LongInt);
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function OvrGetBuf: LongInt;
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procedure OvrSetRetry(Size: LongInt);
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function OvrGetRetry: LongInt;
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procedure OvrClearBuf;
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implementation
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