Question

USING PEP 9 SIMULATOR (Hint only two bytes need to be changed in order for it to run)

Modify this program to convert a lower case character entered to an upper case character

D1 FC 15 Load byte from keyboard (0xFC15) into A register

F1 00 18 Store byte from A register to memory (0x0018)

D1 00 18 Load byte from memory (0x0018) into A register

61 00 15 Add data at memory (0x0015) to register A

E1 00 17 Store word from register A to memory (0x0017)

D1 00 18 Load byte from memory (0x0018) into A register

F1 FC 16 Store byte from A reg to mem addr screen(0xFC16)

00 Stop

01Data storage

00Data storage

00Data storage

Answer 1

Greetings!!

Code:

0000 120003 BR main

0003 D1FC15 main: LDBA 0xFC15,d

0006 F10018 STBA 0x0018,d

0009 D10018 LDBA 0x0018,d

000C 60FFE0 ADDA -32,i

000F F10018 STBA 0x0018,d

0012 D10018 LDBA 0x0018,d

0015 F1FC16 STBA 0xFC16,d

0018 0001 A: .WORD 1

001A 00 STOP

001B .END

Output screenshot:

Hope this helps