elementy assemblera w Borland C++ Builder

podskazite pozalujsta gde oshibka w kode?

Code:

typedef unsigned int ui;

unsigned char buffer[512];

void Read_Sector(ui track, ui sector, ui side, ui station){

asm mov ch,byte [track];
asm mov cl,byte [sector];
asm mov dh,byte [side];
asm mov dl,byte [station];
asm mov ax,seg [buffer];
asm mov es,ax;
asm mov bx,offset [buffer];
asm mov ah,0x02;
asm mov al,0x01;
asm int 0x13;
}

pod Builderem 6.0 ne prochodit "seg", a pod Borlandem C++ 3.1 wsio rabotajet