System information

-L100 List some code
0100 MVI B,08
0102 MVI C,00
0104 LXI H,0119
0107 MOV A,M
0108 SUB C
0109 JC 010D Previous patch is present in X.COM
010C MOV C,A
010D INX H
010E DCR B
010F JNZ 0107
0112 MOV A,C
-XP
P=0100
-T10
Trace to see how patched version operates. Data is moved from A to C
C0Z0M0E0I0 A-00 B-0800 D=0000 H=0000 S=0100 P=0100 MVI B,08
C0Z0M0E0I0 A-00 B-0000 D=0000 H=0000 S=0100 P=0102 MVI C,00
C0Z0M0E0I0 A-00 B-0800 D=0000 H=0000 S=0100 P=0103 LXI H,0119
C0Z0M0E0I0 A-00 B-0800 D=0000 H=0119 S=0100 P=0107 MOV A,M
C0Z0M0E0I0 A-02 B-0800 D=0000 H=0119 S=0100 P=0108 SUB C
C0Z0M0E0I1 A-02 B-0800 D=0000 H=0119 S=0100 P=0109 JC 010D
C0Z1M0E1I1 A-00 B-0800 D=0000 H=0119 S=0100 P=010C MOV C,A
C0Z1M0E1I1 A-02 B-0802 D=0000 H=0119 S=0100 P=010D INX H
C0Z1M0E1I1 A-02 B-0802 D=0000 H=011A S=0100 P=010E DCR B
C0Z1M0E1I1 A-02 B-0702 D=0000 H=011A S=0100 P=010F JNZ 0107
C0Z1M0E1I1 A-02 B-0702 D=0000 H=011A S=0100 P=0107 MOV A,M
C0Z1M0E1I1 A-00 B-0702 D=0000 H=011A S=0100 P=0108 SUB C
C1Z0M1E0I0 A-00 B-0702 D=0000 H=011A S=0100 P=0109 JNC 010D
C1Z0M1E0I0 A-00 B-0702 D=0000 H=011A S=0100 P=010D INX H
C1Z0M1E0I0 A-00 B-0702 D=0000 H=011B S=0100 P=010E DCR B
C1Z0M0E1I1 A-00 B-0602 D=0000 H=011B S=0100 P=010F JNZ 0107*0107
-X /
Breakpoint after 16 steps
C1ZOMOE1I1 A=FE B=0602 D=000 H-011B S=0100 P-0107 MOV A,M
-G,108 Run from current PC and breakpoint at 108H
4.4 A Sample Program CP/M Operating System Manual
4-20