Motorola Axiom CMD11E1 Guía de usuario descargar pdf (Pagina 9)

1.2. TASKS 9

modify the memory, the command will ﬁrst echo the value already in memory. If

you don’t want to change it, press the space bar, command will move on to the

next memory location. If you want to change the value, just type the value (in

HEX). If you make a mistake, do not press the backspace key. Continue

typing. MM will only look at the last two characters you typed. So if you type

AB872B, you have in eﬀect typed 2B. Once you have entered the correct value,

press the space bar. When you are all done, press the enter key. Here is a quick

list to remind you:

1. To leave memory unaltered but to move to next location, press SPACE bar

2. To modify memory and then move to next location, enter the data and then

press the SPACE bar

3. When entering the value, only the last two characters are used. So if you

make a mistake continue typing

4. When done, press the enter key

The following shows the interaction for entering the four values. Since MM echoes

the previous values stored in memory, you may see diﬀerent numbers:

>MM C100

C100 A7 B6 BB D0 C2 00 32 BB

After every memory modify command get into the habit of running the memory

dump command to make sure that the memory was modiﬁed the way you wanted.

Exercise

1. Try modifying memory at location E000. What happens when you do it?

2. Modify the memory at three locations starting from D000 to the following

values 10 32 A8 and make sure that the changed did take place.

3. Turn the power to HC11 (not the PC!) oﬀ and then on again. What hap-

pened to the changes you made to locations D000 to D002? Why?

4. Look at memory locations E000 to E00F. Did any of them change when you

cycled the power?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 100 101

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Motorola Axiom CMD11E1 Guía de usuario Pagina 9