MPY

From NDWiki
Jump to: navigation, search
MPY
Description Multipy integer
Format MPY <addr. mode> <disp.>
Code 120 0008
Affected A:=A*(ea), O, Q
Type User
Architecture ND-100, ND-110

MPY is an assembly instruction. It multiplies the contents of the memory location pointed to by the effective address with the contents of the A register, leaving the result in the A register.

Flags affected

If an overflow occurs, that is if the result has an absolute value greater than 3276710, both the dynamic overflow indicator (Q) and the static overflow indicator (O) are set to one.


References