Instruction Set Architecture—IP2022 User’s Manual 182 www.ubicom.com NOP No Operation Operation: None Bits affected: None Opcode: 0000 0000 0000 0000 Description: This instruction does nothing except to cause a
one-cycle delay in program execution. Cycles: 1 Example: sb              0x05,4;set bit 4 in Port A
nop    ;no operation, 1-cycle delay
sb 0x05,6;set bit 5 in Port A This example shows how a nop instruction can
be   used   as   a   one-cycle   delay   between   two
successive   read-modify-write   instructions   that
modify  the  same  I/O  port.  This  delay  ensures
reliable results at high clock rates.