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15 #define TF_MASK 0x00000100
16 #define IF_MASK 0x00000200
17 #define IOPL_MASK 0x00003000
18 #define NT_MASK 0x00004000
19 #define VM_MASK 0x00020000
20 #define AC_MASK 0x00040000
21 #define VIF_MASK 0x00080000
22 #define VIP_MASK 0x00100000
23 #define ID_MASK 0x00200000
25 #define BIOSSEG 0x0f000
37 #define VM86_TYPE(retval) ((retval) & 0xff)
38 #define VM86_ARG(retval) ((retval) >> 8)
41 #define VM86_UNKNOWN 1
48 #define VM86_PICRETURN 4
54 #define VM86_PLUS_INSTALL_CHECK 0
56 #define VM86_ENTER_NO_BYPASS 2
57 #define VM86_REQUEST_IRQ 3
58 #define VM86_FREE_IRQ 4
59 #define VM86_GET_IRQ_BITS 5
60 #define VM86_GET_AND_RESET_IRQ 6
114 #define VM86_SCREEN_BITMAP 0x0001