*PDP-11 DOUBLE-OP INSTRUCTIONS TO 9900
$MACRO ADD
&P0    A    &P1,&P2
$END
$MACRO SUB
&P0    S    &P1,&P2
$END
$MACRO CMP
&P0    C    &P1,&P2
$END
$MACRO CMPB
&P0    CB   &P1,&P2
$END
$MACRO BIS
$REM dest = src or dest
&P0    SOC  &P1,&P2
$END
$MACRO BISB
&P0    SOCB &P1,&P2
$END
$MACRO BIT
$REM dest and src (set flags)
&P0    COC  &P1,&P2
$END
* BITB
$MACRO BIC
$REM dest = not src and dest
$REM reset bits in dest that correspond
$REM to set bits in src (SZC)
&P0    SZC  &P1,&P2
$END
$MACRO BICB
&P0    SZCB &P1,&P2
$END