IP2022 User’s Manual—Instruction Set Architecture www.ubicom.com 129 CSE W,#lit8 Compare W,Literal then Skip if Equal Operation: lit8 - W; if result is zero, skip next instruction Bits affected: None Opcode: 0111 0111 kkkk kkkk Description: This instruction subtracts the contents of W from
an 8-bit literal and discards the result. W is left
unchanged. If the result is zero (i.e. W and the
literal   are   equal),   the   following   instruction   is
skipped.   The   STATUS   register   bits   are   not
updated. Cycles: 1 Example: cse    w,#0x1B ;compare W against                                       ;escape char.
jmp    normal_char;if equal, jump                                       ;to normal_char
jmp    escape_char;else, jump ;to escape_char This example compares the contents of W with
the  ASCII  code  for  the  escape  character.  If  W
holds 0x1B, then the escape_char routine is