My First Nooby Code Please Read!

[Demonic722]

I'm still learning ASM, but since I'm waiting for my teacher to get ready, I looked into the tools and decided to make a really basic code for Animal Crossing Wild World v1.0 that puts a rainbow feather in slot 1 of inventory:

ldr r1, Inventory
ldrh r2, Item
strh r2, [r1]
bx lr

Inventory:
.long 0x21d88fe
Item:
.short 0x1404

023FF090 012FFF11
E0000000 00000016
E59F1008 E1DF20B8
E1C120B0 E12FFF1E
021D88FE 00001404
023FF090 E3520003

I am still learning the basic commands and stuff so this is all I can do right now.

[Maniac]

Looks fine, good to see other people learning. Good luck with everything!

[Demonic722]

Thanks for looking at it. Could you give me a link with all the ASM commands so I could study them?

[siestacat]

Maniac gave me a list a while ago, but its really confusing. I got most of the commands for ARM9 ASM on my site (siestablog.tk) in the ASM section (not sure which one). Glad to see my teaching has paid off. Seeing as your inspired, I'll post some more stuff on my site (you've advanced through everything on there, so I'll add the finding addresses part, as you know most of the actual command stuff). I see if I can get you to understand loops better on my site too.

[Maniac]

Thanks for looking at it. Could you give me a link with all the ASM commands so I could study them?

http://maniac.game-hackers.com/DS/Co...ly/qrc_arm.pdf
There you go.

[Baka_Kyuubi84]

I'm still learning ASM but since I'm waiting for my teacher to get ready I look into the tools
and decided to make a really basic code for Animal Crossing Wild World v1.0 which puts
a rainbow feather in slot 1 of inventory:

 
ldr r1, Inventory
ldrh r2, Item
strh r2, [r1]
bx lr
Inventory:
.long 0x21d88fe
Item:
.short 0x1404

023FF090 012FFF11
E0000000 00000016
E59F1008 E1DF20B8
E1C120B0 E12FFF1E
021D88FE 00001404
023FF090 E3520003


I am still learning the basic commands and stuff but this is all I can do right now.

Ok I have a small question on this. I may be wrong and I think I am but could someone clarify for me please. Sorry two small questions.

ldr r1, Inventory
ldrh r2, Item
strh r2, [r1]
bx lr
Inventory:
.long 0x21d88fe
Item:
.short 0x1404

1)Isn't this doing the same as in AR code format:

121D88FE 00001404

2)Also isn't there a way to shorten this a little say like this:

ldr r1,=21D88FEh
 ldrh r2, Item
 strh r2, [r1]
 bx lr
 Item:
 .short 0x1404

Like I said I think I am wrong, but can someone clarify me on this please.

[siestacat]

Yes that is a way of making things a lot easier. His making your 1 line code in ASM is just proof of concept.
[/code]

[siestacat]

Demonic: I just updated my site. Has all about finding addresses now, so you can atleast advance yourself a little more as I put more content on it.


siestacat.wordpress.com

siestablog.tk

[siestacat]

Ok I have a small question on this. I may be wrong and I think I am but could someone clarify for me please. Sorry two small questions.

ldr r1, Inventory
ldrh r2, Item
strh r2, [r1]
bx lr
Inventory:
.long 0x21d88fe
Item:
.short 0x1404

1)Isn't this doing the same as in AR code format:

121D88FE 00001404

2)Also isn't there a way to shorten this a little say like this:

ldr r1,=21D88FEh
 ldrh r2, Item
 strh r2, [r1]
 bx lr
 Item:
 .short 0x1404

Like I said I think I am wrong, but can someone clarify me on this please.

Baka:

in the line

ldr r1,=21D88FEh

it really should be

ldr r1,=0x21D88FE

I think that would compile the same, so its not really shorter.


For codes like that, always use simple standard ARDS memory writes.

[Maniac]

I think that would compile the same, so its not really shorter.

You would be correct.. and at times it will actually make the code longer if you do that. Just depends on the situation