Intro to Assembly Programming (Background info to program a paintball marker)

[Fixion]

.... and that is why you pic a microcontroller, for which a C compiler exists, and if you really really like ASM, you can still write sections of your program in it. Understand kids?

Besides, how are you going to port linux to the emag if you can't comile it for the processor? Better yet, pong?

[sig11]

.... and that is why you pic a microcontroller, for which a C compiler exists, and if you really really like ASM, you can still write sections of your program in it. Understand kids?

The problem is that the emag's microcontroller only has 2k flash, 128bytes of SRAM, and 128bytes EEPROM. Like Miscue already said... you won't get very many features into that if you use a high level language.


The Atmel ASM suprises me with how easy it is. I was staring at some code I was given with the programmer and thinking "Why the hell would someone use decimal numbers in ASM?!" Finally after looking at the datasheet (forgot to print the key : ) for the hundreth time I realized that they were specifying certain bits in a register by its decimal index. So cool. In any other assembly language I've used before you had to use masks to set certain bits. Amazing time and mind saver.
So nice to do 'sti PORTB, 6' instead of:
'ldaa portb
ldab $20
orab
stab'

I probably butchered that since its been so long since I've written any 68HC11 code.... but you get the idea.

Lee

[Miscue]

.... and that is why you pic a microcontroller, for which a C compiler exists, and if you really really like ASM, you can still write sections of your program in it. Understand kids?

Besides, how are you going to port linux to the emag if you can't comile it for the processor? Better yet, pong?

There's no point in doing that. If 90% of your stuff is bloated, might as well do it 100%. If you're programming a PC game, and use inline ASM for parts that need to be very fast - this makes a lot of sense. A goal for ASM usage on a microcontroller is smaller size, when you have space limitations - you gotta do the whole thing in ASM for significant space savings.

[Mango]

....

[Fixion]

There's no point in doing that. If 90% of your stuff is bloated, might as well do it 100%. If you're programming a PC game, and use inline ASM for parts that need to be very fast - this makes a lot of sense. A goal for ASM usage on a microcontroller is smaller size, when you have space limitations - you gotta do the whole thing in ASM for significant space savings.

I understand both the advantages and disadvantages of ASM. I was joking
...and no, I didn't take the time to read Miscues second post, actually, I barely read the first few, I had to go to class.

I've never seen the emag code, so I'm not going to assume anything. But I did not know what microcontroller the emag uses, so I assumed that its slightly better, faster, stronger (like the song ), had more memory, etc. than it actually is. If I knew its specs, I would have agreed that ASM is the only way. But I guess if you want to save money on parts and time on simplicity, thats the way to go.

So, when can I play Duke Nukem Forever on an emag running *nix .

[datapimp69]

hye, whats a stack. and why to i have to pop it?

[sig11]

hye, whats a stack. and why to i have to pop it?

In my Theory of Computation class we always tried to get the prof off on some wild tangent... Got to be where he would say "Stack push" and start talking about whatever we pushed him to. Though he never popped off the stack when he'd go back to teaching. No wonder that class was so hard. Stack overflow.

Lee

[mikey101]

public class Stack
{
public static final int SIZE = 2;
private Object [] stck = new Object[SIZE];

public void push(Object x)
{
int i;
int y;
for(i = 0; i != null; i++)
{ y = (i + 1);
}
stck[y] = x;
}
}

- index out of bounds exeception??? OHNOES!!
Java may not be as efficient as asm, but it's still cool with you guys right?