Instruction Set Architecture—IP2022 User’s Manual 180 www.ubicom.com MULU W,fr   Unsigned Multiply W,fr into MULH || W Operation: W = W × fr; low 8 bits of unsigned product
MULH = W × fr; high 8 bits of unsigned product Bits affected: None Opcode: 0101 000f ffff ffff Description: This instruction performs an unsigned multiply of
the   contents   of   the   specified   data   memory
location by the contents of W. The low 8 bits of the
product are written to W, and the high 8 bits are
written to the MULH register. The data memory
location is left unchanged. Cycles: 1 Example: mulu  w,0x099;unsigned multiply, ;0x099 by W into W This example multiplies the contents of the data
memory   location   at   address   0x099   by   the
contents of W into W. The high byte of the result
is loaded into the MULH register, and the low byte
is loaded into W.