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1556 mateusz.vi 1 
/*
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 * replacement for a couple of libc functions
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 */
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#include <i86.h>
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#include <stddef.h>
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#include "libc.h"
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1557 mateusz.vi 12 
unsigned short mdr_dos_resizeblock(unsigned short siz, unsigned short segn) {
1556 mateusz.vi 13 
  unsigned short res = 0;
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  _asm {
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    push bx
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    push es
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    mov ah, 0x4a
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    mov bx, siz
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    mov es, segn
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    int 0x21
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    jnc done
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    mov res, ax
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    done:
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    pop es
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    pop bx
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  }
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  return(res);
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}
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unsigned short mdr_dos_write(unsigned short handle, const void far *buf, unsigned short count, unsigned short *bytes) {
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  unsigned short res = 0;
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  unsigned short resax = 0;
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  unsigned short buf_seg = FP_SEG(buf);
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  unsigned short buf_off = FP_OFF(buf);
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  _asm {
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    push bx
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    push cx
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    push dx
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    mov ah, 0x40
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    mov bx, handle
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    mov cx, count
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    mov dx, buf_off
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    push ds
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    mov ds, buf_seg
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    int 0x21
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    pop ds
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    jnc done
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    mov res, ax
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    done:
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    mov resax, ax
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    pop dx
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    pop cx
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    pop bx
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  }
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  *bytes = resax;
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  return(res);
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}