What if I mess up?

[Gunther]

Evan,

Yeah well don't we always need a 0 in computers?

in most cases. Otherwise we would give away one digit.

Does 0xFFU meaning 256(baseten) make sense?

0xffh = 255 decimal.

Gunther

[Evan]

Evan,

Yeah well don't we always need a 0 in computers?

in most cases. Otherwise we would give away one digit.

Does 0xFFU meaning 256(baseten) make sense?

0xffh = 255 decimal.

Gunther

Gunther I hope it is recognized we tried to declare hexadecimal notation twice in the assembler.
With

Code Select Expand

0x
and

Code Select Expand

h






Or could you please explain the one way to declare an hexadecimal number in the assembler?


Or where do we use one or the other?

[dedndave]

the 0xFF notation is used in C and other languages
normal MASM syntax is 0FFh
the leading 0 is only required if the first hex digit is a letter
so, 96h is also acceptable form

hexadecimal format values are not generally used for signed values
we would use decimal format

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bNeg db -128
bPos db 127

[Evan]

I just ran this

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MOV EAX, cons1mille
with many code exits.

Defining the cons1mille using this

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INCLUDE CONS.INC

By making a CONS.INC file.

[dedndave]

i don't know what you defined it as, but ok

[Evan]

the 0xFF notation is used in C and other languages
normal MASM syntax is 0FFh
the leading 0 is only required if the first hex digit is a letter
so, 96h is also acceptable form

hexadecimal format values are not generally used for signed values
we would use decimal format

Code Select Expand

bNeg db -128
bPos db 127

Would

96(base hex) = FF(base hex)
Annihilate the hex number system then?
-----------------------------------------------------------


0FFh
vs
0x01
vs
01h
vs
1h


My question is 0FFh going to be the way of the byte?

Basically there are many variations of a full byte.

I'll try to figure out more about hex and bytes later.

I take it
0FFh
0FEh
0FDh
0FCh
0FBh
0FAh
0F9h
0F8h
0F7h
0F6h
0F5h
0F4h
0F3h
0F2h
0F1h
0F0h
; lol
0E0h
0E1h
0E2h
0E3h
0E4h
0E5h
0E6h
0E7h
0E8h
0E9h
0EAh
0EBh
0ECh
0EDh
0EEh
0EFh
will work too for a byte.

[Evan]

i don't know what you defined it as, but ok

I defined it like this

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cons1mille  EQU 1000
.

[dedndave]

here's a good exercise....

write a little program that display all the hex values from 0 to FF, seperated by a space
so - you want to make 256 passes through a single loop
or - 16 passes on an outer loop and 16 passes on an inner loop

[Evan]

here's a good exercise....

write a little program that display all the hex values from 0 to FF, seperated by a space
so - you want to make 256 passes through a single loop
or - 16 passes on an outer loop and 16 passes on an inner loop

That sounds like a really fun time. I will try.