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- unit DOSMem;
-
- interface
-
- function Alloc (paras:word):word;
-
- procedure Free (p:word);
-
- function Largest:word;
-
- implementation
-
- function Alloc; assembler;
-
- asm
- mov ah, $48
- mov bx, paras
- int $21
- jnc @1
- xor ax, ax
- @1:
- end;
-
- procedure Free; assembler;
-
- asm
- mov ah, $49
- mov es, p
- int $21
- end;
-
- function Largest; assembler;
-
- asm
- mov ah, $48
- mov bx, -1
- int $21
- mov ax, bx
- end;
-
- end.
-