指令名称 操作数 描述 操作 影响标记 周期 算术和逻辑指令 ADD Rd,Rr Add without Carry Rd = Rd + Rr Z,C,N,V,H,S 1 ADC Rd,Rr Add with Carry Rd = Rd + Rr + C Z,C,N,V,H,S 1 ADIW Rd,k Add Immediate To Word Rd+1:Rd,K Z,C,N,V,S 2 SUB Rd,Rr Subtract without Carry Rd = Rd - Rr Z,C,N,V,H,S 1 SUBI Rd,K8 Subtract Immediat .. [查看全文]