.*: Assembler messages:
.*: Error: illegal operands `nop 0.1'
.*: Error: illegal operands `nop 1'
.*: Error: illegal operands `nop x9'
.*: Error: illegal operands `c.nop 32'
.*: Error: illegal operands `c.nop -33'
.*: Error: illegal operands `c.nop 0.0'
.*: Error: illegal operands `c.nop x8'
