Overlay Unit

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  Overlay Unit


The Overlay unit (OVERLAY.TPU) contains procedures, functions, and symbols used with  Borland Pascal's overlay manager.

Target

Real mode only

Functions and Procedures

Constants, Types, and Variables

 type OvrReadFunc = function(OvrSeg : Word): Integer;

Constants         Result codes

 ovrOk            =  0;
 ovrError         = -1;
 ovrNotFound      = -2;
 ovrNoMemory      = -3;
 ovrIOError       = -4;
 ovrNoEMSDriver   = -5;
 ovrNoEMSMemory   = -6;

Variables

 OvrResult:     Integer;
 OvrFileMode:   Byte;
 OvrLoadCount:  Word;
 OvrReadBuf:    OvrReadFunc;
 OvrTrapCount:  Word;

See also

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