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Rev 1556 Rev 1557
Line 27... Line 27...
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}
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}
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unsigned short mdr_dos_fopen(const char *fname, unsigned short *fhandle) {
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unsigned short mdr_dos_fopen(const char *fname, unsigned short *fhandle) {
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  unsigned short res = 0;
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  unsigned short res = 0;
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  unsigned short handle = 0;
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  unsigned short handle = 0;
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  unsigned short fname_seg = FP_SEG(fname);
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  unsigned short fname_off = FP_OFF(fname);
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  _asm {
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  _asm {
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    push cx
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    push cx
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    push dx
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    push dx
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    mov ax, 0x3d00
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    mov ax, 0x3d00
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    mov dx, fname_off
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    mov dx, fname
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    xor cl, cl
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    xor cl, cl
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    push ds
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    mov ds, fname_seg
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    int 0x21
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    int 0x21
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    pop ds
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    jc err
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    jc err
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    mov handle, ax
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    mov handle, ax
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    jmp done
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    jmp done
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    err:
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    err:
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    mov res, ax
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    mov res, ax
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  return(segnum);
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  return(segnum);
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}
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}
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unsigned short mdr_dos_resizeblock(unsigned short siz, unsigned short segn, unsigned short *maxsiz) {
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unsigned short mdr_dos_resizeblock(unsigned short siz, unsigned short segn) {
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  unsigned short resbx = 0;
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  unsigned short res = 0;
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  unsigned short res = 0;
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  _asm {
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  _asm {
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    push bx
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    push bx
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    push es
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    push es
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    mov ah, 0x4a
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    mov ah, 0x4a
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    mov bx, siz
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    mov bx, siz
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    mov es, segn
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    mov es, segn
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    int 0x21
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    int 0x21
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    jnc done
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    jnc done
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    mov resbx, bx
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    mov res, ax
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    mov res, ax
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    done:
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    done:
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    pop es
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    pop es
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    pop bx
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    pop bx
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  }
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  }
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  *maxsiz = resbx;
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  return(res);
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  return(res);
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}
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}
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unsigned short mdr_dos_read(unsigned short handle, void far *buf, unsigned short count, unsigned short *bytes) {
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unsigned short mdr_dos_read(unsigned short handle, void far *buf, unsigned short count, unsigned short *bytes) {