BMF's HDMA Kit Help

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Main - SMW Hacking - BMF's HDMA Kit Help

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boingboingsplat

Posted on 07-23-09 10:59 PM

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From: Michicola

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	Yeah, the only version I could find on SMWC, namely, this one, has absolutely no documentation. That being said, I have no idea how I am supposed to use it. I have coded some HDMA effects without any sort of kit before, albeit a while ago. I am aware that I will need to code the effects myself. ____________________

era64

Posted on 07-24-09 10:54 AM

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Really? I can find another HDMA kit, which is hard to install, but it has documentation: http://www.smwcentral.net/download.php?id=29&type=tools

xpCynic

Posted on 07-24-09 11:04 AM

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I'd imagine he wants to use BMF's kit because it's more flexible. Boing, you could always head over to Badnik and ask the man himself for help.

boingboingsplat

Posted on 07-24-09 06:41 PM

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	Posted by era64 Really? I can find another HDMA kit, which is hard to install, but it has documentation: http://www.smwcentral.net/download.php?id=29&type=tools I do not want to use d4s' kit because it doesn't allow me complete freedom over what my effects do and how I use them. There are advantages to being able to code all the effects from scratch yourself. ____________________

Sukasa

Posted on 07-25-09 03:48 AM (rev. 2 of 07-25-09 06:06 AM)

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There's a full documentation on the I2 archive, I'll get a link and edit this post with it

EDIT: http://acmlm.kafuka.org/archive2/thread.php?id=955

boingboingsplat

Posted on 07-25-09 09:28 PM

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	I am still confused, mostly because the xkas HDMA kit I have has only one file, and I am at a loss of where I need to put my HDMA tables in the first place. ____________________

Sukasa

Posted on 07-25-09 09:36 PM

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Then throw out whatever kit you have and get the kit BMF posted in the linked thread. I don't know why anyone would fuck with it anyways, BMF's setup had things the way you needed them. Anyways, as far as the tables go, you put them in two places. One is the initial state of the table (if you have it) which goes anywhere in the same bank as it's hdmasub code block, along with your custom code for that effect (see the documention by BMF). The second location is anywhere in RAM you want to put the table (again, see bmf's posts for how to put it all together)

Also, I forgot BMF released two versions. You want This one

boingboingsplat

Posted on 07-25-09 11:19 PM

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I disassembled hdmasubv2.bin, and I just want to make sure I didn't do it horribly wrong.

	LDA $7FFF18				;DMA Channel 3
	BNE label1
	PHX
	PHB
	PHK
	PLB
loop1:
	LDX #$05
	LDA hdmaParameters,x	;16-bit address of HDMA parameters
	STA $7FFF18,x			;DMA Channel 3
	DEX
	BPL loop1
loop2:
	LDX #$0C				;Size of HDMA table, minus 1
	LDA hdmaTable,x			;16-bit address of HDMA table
	STA $7FFF40,x			;24-bit RAM address HDMA table will be copied to
	DEX
	BPL loop2
	PLB
	PLX
	RTL
label1:
	REP #$20
	LDA $1466
	STA $7FFF4A
	STA $7FFF41
	STA $7FFF47
	LSR A
	STA $7FFF44
	SEP #$20
	RTL 
db $00						;Not sure why this is here, maybe I did this wrong
hdmaParameters:
db $04,$02,$0F,$40,$FF,$7F,$00,$00
hdmaTable:
db $37,$00,$00,$50,$00,$00,$38,$00,$00,$01,$00,$00,$00

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Main - SMW Hacking - BMF's HDMA Kit Help

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