#52275 - danvx6 - Mon Aug 29, 2005 6:44 am
What I want to do is program an RPG, and there is not enough space in VRAM for all of the sprites (plus i need a place for my maps, dialogue, etc.) so I need to figure out how to make sure my data is stored in ROM. Then I need to know how to access the data from ROM. Can someone please help me with this? I tried searching the forums, but to no avail. Thanks :)
#52276 - yamaneko - Mon Aug 29, 2005 6:52 am
It's simple.
When you declare your data, just put "const" in front:
exemple:
const char var[]={some value..};
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山猫
#52331 - danvx6 - Mon Aug 29, 2005 8:07 pm
Thanks. I think I am going to need to put the data in specific locations though so I can access certain data when it is needed. How can I make sure that a chunk of data is stored in a specific memory location?
#52334 - poslundc - Mon Aug 29, 2005 8:21 pm
| danvx6 wrote: |
| Thanks. I think I am going to need to put the data in specific locations though so I can access certain data when it is needed. |
You can access it any time... by referring to its variable name. If it's an array, use the variable name to grab a pointer to the base of it. If it's a literal value, structure, etc. use the address-of operator (&) to get the address of it.
| Quote: |
| How can I make sure that a chunk of data is stored in a specific memory location? |
Not very easily. That's why we have linkers to link a variable name with a location in memory: so we don't have to keep track of what address every variable is stored at. Why would you want to do this yourself?
Dan.
#52340 - danvx6 - Mon Aug 29, 2005 9:06 pm
I was just confusing myself, thats all... forget it ever happened. :)