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 TPALLOC v1.0 - Allocate more than 64K Memory for TP   Brian Foley 04.11.1988

Модуль для выделения блоков памяти размером более 64K.
TPALLOC contains routines that allow you to allocate and deallocate blocks of memory larger than 64K using Turbo Pascal 4.0 or 5.0.



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TPALLOC - Routines for allocating blocks of memory larger than 64K ------------------------------------------------------------------ Brian Foley TurboPower Software Compuserve [76317,3247] 11/88 Version 1.0 Released to the public domain Overview ------------------------------------------------------------------ TPALLOC contains routines that allow you to allocate and deallocate blocks of memory larger than 64K using Turbo Pascal 4.0 or 5.0. Whether or not these routines will be of use to you is hard to say. On the one hand, their usefulness is severely limited by the fact that Turbo Pascal does not allow you to declare data structures larger than 64K (actually 65521 bytes). So it will be up to you to manipulate huge data structures allocated with TPALLOC. On the other hand, we know these routines *can* be useful in some cases. After all, we wrote them because we needed them for our own software. In any event, we didn't feel any overwhelming need to keep these routines to ourselves, and you are welcome to use them if you can. See DEMO.PAS for a demonstration of how to use TPALLOC. Using TPALLOC ------------------------------------------------------------------ TPALLOC interfaces the following types and procedures: type SegOfs = record Ofst, Segm : Word; end; This record structure is used to separate a 32-bit pointer into its component parts. procedure HugeGetMem(var Pt; Bytes : LongInt); This routine allocates a block of memory of size Bytes and stores a pointer to it in Pt (a pointer variable of some sort). Pt will be set to nil if Bytes > MaxAvail. HugeGetMem is essentially identical to GetMem except that it can allocate blocks of memory larger than 64K. (It can also allocate blocks less than 64K, of course.) procedure HugeFreeMem(var Pt; Bytes : LongInt); This routine deallocates a block of memory of size Bytes pointed to by Pt (a pointer variable of some sort). Pt is set to nil on