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AX = 4A32h BL = subfunction 00h get ???Return:
AX = flag: subfunction 04h has been used (0000h/FFFFh) DX = ??? (0000h/?) 01h patch ??? in IO.SYS (segment 0070h) 02h unpatch ??? in IO.SYS 03h ??? 04h set ???, then do subfunction 01h 05h unset ???, then do subfunction 02h elseReturn:
Nothing
Category: DOS Kernel - Int 2Fh - W
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