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1 user currently in Super Mario World hacking:  labmaster |
| Acmlm's Board - I2 Archive - Super Mario World hacking - compiling custom blocks w/SNASM |
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rubixcuber Red Goomba Level: 12 Posts: 1/46 EXP: 6125 For next: 1796 Since: 10-13-04 From: St. Louis, MO USA Since last post: 331 days Last activity: 293 days |
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| I've been trying to add a new custom block using blocktool but am unsure about the proper method. I wrote a simple asm file that adds 5 to the players y speed and compiled it using snasm, then I created a new block in blocktool and used the file produced by snasm as it's file and inserted it. When trying to start the rom, the screen is completely blank and only the music remains. Something I was confused about was setting the org value. Snasm refused to compile without setting a value, and i set the value to $8000. Does the code for the blocks need some kind or return statement or does block tool handle all of the encapsulation? Any help is appreciated. -edit- I noticed that the output from snasm is way too large, and i think it's putting in a header or something, is there something I need to be doing to stop this? (edited by rubixcuber on 10-13-04 10:52 PM) (edited by rubixcuber on 10-13-04 10:53 PM) |
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blackhole89 LOLSEALS Moderator of ROM hacking EmuNET IRC network admin Head GM of TwilightRO Level: 47  Posts: 364/971 EXP: 739208 For next: 26995 Since: 03-15-04 From: Dresden/Germany Since last post: 14 hours Last activity: 12 hours |
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| Argh. ORG $8000 is there because of the 65c816's reset vector (aka interrupt 0) and means that your code is put after 8000h in the output. For compiling custom blocks you should set ORG to 0, thus placing the code at the file's beginning and keeping your blocks' ROM bank undamaged. You should receive a file which is about 20 bytes in size. Custom block routines have afaik to be terminated with an RTS statement (return from subroutine/short return). Try to prevent SNASM OF writing any kind of headers. And feed your blocktool's DB entries with the correct action pointers (-1 if you don't want anything to happen on this event), e.g. hit from above: 0, hit from the left: -1, hit from the right: -1, ... ~Blacky. |
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rubixcuber Red Goomba Level: 12 Posts: 2/46 EXP: 6125 For next: 1796 Since: 10-13-04 From: St. Louis, MO USA Since last post: 331 days Last activity: 293 days |
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| thanks, got it to work |
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| Acmlm's Board - I2 Archive - Super Mario World hacking - compiling custom blocks w/SNASM |
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