The Intel 8086 / 8088 / 80186 / 80286 / 80386 / 80486 Instruction Set

This HTML version of the file intel.doc from the PC Game Programmer's guide was produced by Zack T Smith. Fancy HTML modifications are copyright © 2005 by Zack T Smith, all rights reserved. This information is provided in the hope that it will be useful, but without any warranty. It is provided AS-IS, without even the implied warranty of fitness for a particular purpose.

T Instructions

TEST - Test For Bit Pattern


        Usage:  TEST    dest,src
        Modifies flags: CF OF PF SF ZF (AF undefined)

        Performs a logical AND of the two operands updating the flags
        register without saving the result.

                                 Clocks                 Size
        Operands         808x  286   386   486          Bytes

        reg,reg           3     2     1     1             2
        reg,mem          9+EA   6     5     1            2-4  (W88=13+EA)
        mem,reg          9+EA   6     5     2            2-4  (W88=13+EA)
        reg,immed         5     3     2     1            3-4
        mem,immed       11+EA   6     5     2            3-6
        accum,immed       4     3     2     1            2-3