Lab 2 Question

[Ryan McNeeley]

A relatively simple question I think--
Why in the lab input example does the user specify M[0] = 0x9a? And
likewise for M[1] = 0x4f and so on...

I understand that M[0x1a] refers to M[26], and that the decimal value of 1
is stored there, likewise I understand for M[0x19] and that this refers to
M[25] and storing of 1 there as well.

I think my question is best stated--how is it possible to distinguish
between when the user is inputting values to be stored somewhere and when
they are inputting opcodes along with addresses? Basically, can it be
assumed that a user will input in a M[0],M[1],M[2],...etc. format always?
And that the 0-9 (or some arbitary decimal value) refer to the order that
the operations should be executed? Thanks in advance.

[Ryan McNeeley]

Is it safe to just initiate a loop to grab memory locations (in hexadecimal)
along with values to be stored at those locations until you receive a memory
address input that is in non-hexadecimal format (such as M[0])? And when
you get this non-hexidecimal value for memory, you just assume it is
denoting that the value inputted after it will be a full instruction
complete with opcode and address?

Post by Ryan McNeeley
A relatively simple question I think--
Why in the lab input example does the user specify M[0] = 0x9a? And
likewise for M[1] = 0x4f and so on...
I understand that M[0x1a] refers to M[26], and that the decimal value of 1
is stored there, likewise I understand for M[0x19] and that this refers to
M[25] and storing of 1 there as well.
I think my question is best stated--how is it possible to distinguish
between when the user is inputting values to be stored somewhere and when
they are inputting opcodes along with addresses? Basically, can it be
assumed that a user will input in a M[0],M[1],M[2],...etc. format always?
And that the 0-9 (or some arbitary decimal value) refer to the order that
the operations should be executed? Thanks in advance.
--
Ryan McNeeley

[Brandon]

M[0] stands for SAM memory location 0. Remember that SAM has memory
locations 0-31. When the user enters M [0x1a] = 1, all they are doing is
storing 1 to SAM memory location 26. On the other hand, M [0] = 0x9a instead
stores 100 11010 to SAM memory 0, which of course is SAM for Load 26.

The user is responsible for loading everything, including SAM instructions
and data. You should keep looping until the user enters a negative value
for the memory location.

Post by Ryan McNeeley
A relatively simple question I think--
Why in the lab input example does the user specify M[0] = 0x9a? And
likewise for M[1] = 0x4f and so on...
I understand that M[0x1a] refers to M[26], and that the decimal value of
1 is stored there, likewise I understand for M[0x19] and that this refers
to M[25] and storing of 1 there as well.
I think my question is best stated--how is it possible to distinguish
between when the user is inputting values to be stored somewhere and when
they are inputting opcodes along with addresses? Basically, can it be
assumed that a user will input in a M[0],M[1],M[2],...etc. format always?
And that the 0-9 (or some arbitary decimal value) refer to the order that
the operations should be executed? Thanks in advance.
--
Ryan McNeeley