指令ADDA,R0执行前()=38H,(R)=54H,(C)=1,执行后()
A: (A)=92H,(C)=1
B: (A)=92H,(C)=0
C: (A)=8CH,(C)=1
D: (A)=7AH,(C)=0
A: (A)=92H,(C)=1
B: (A)=92H,(C)=0
C: (A)=8CH,(C)=1
D: (A)=7AH,(C)=0
举一反三
- 指令ADDA,R0执行前(A)=38H,(R0)=54H,(C)=1,执行后()。 A: B: =92H, C: =1 D: E: =92H, F: =0 G: H: =8CH, I: =1 J: K: =8CH, L: =0
- 指令ADDA,R0执行前(A)=38H,(R0)=54H,(c)=1执行后() A: =92H (c)=1 B: (A)=92H (c)=0 C: (A)=8CH (c)=1 D: (A)=8CHH (c)=0
- 80C51指令系统中,指令ADD A,R0 执行前(A)=38H,(R0)=54H,(C)=1 执行后,其结果为( )。 A: (A)=92H (C)=1 B: (A)=92H (C)=0 C: (A)=8CH (C)=1 D: (A)=8CH (C)=0
- 指令 MOV R0,20H 执行前 (R0)=30H, (20H)=38H,执行后(R0)=?
- 指令ADDC A,@R0执行前(A)=38H,(R0)=30H,(30H)=FOH,(C)=1 执行后,其结果为 。 A: 28H,1 B: 29H,1 C: 68H,0 D: 29H,0