Search found 407 matches

by ob1
Fri May 24, 2013 12:46 pm
Forum: Super 32X
Topic: 68K to SH2 DMA FIFO
Replies: 10
Views: 5898

In my SuperVDP, I upload the palette from Genesis to 32X. Here's how it runs. 68k side : move.l #$FF4000,a0 ; Source address (Genny side) move.l #$0603BE00,d0 ; Destination address (32x memory map) move #256,d1 ; 256 16-bit words to write bsr DMAupload ... DMAupload: move.l a1,-(a7) ; put a1 on the ...
by ob1
Wed May 22, 2013 5:51 am
Forum: Blabla
Topic: The Saturn is finally profitable ! (joke)
Replies: 6
Views: 2358

Stef wrote:The article even said that Saturn sells represent 25% of the income of Sega Japan
It even could be true :DDD
Stef wrote:and they plan to re open two factories to produce the system :p
It won't be true (pity).

Anyway, it's a humour site, tongue in cheek and so on.
by ob1
Tue May 07, 2013 1:04 pm
Forum: Video Display Processor
Topic: VDP 128Kb Extended VRAM mode
Replies: 41
Views: 26744

Wow ! What an insanely great topic of knowledge !!! Congrats to all !! Could it be implemented in an emulator ? And if they had brought out the digital video bus to a connector we could have gotten a palette upgrade too. Why ? Or how ? And, also, could it be implemented in an emulator ? A "Mode 3" G...
by ob1
Thu Jan 24, 2013 9:46 am
Forum: Super 32X
Topic: Cannonball on 32X ?
Replies: 10
Views: 4666

Well, there are obviously some other constraints :
Hardware Features : 128 Sprites on screen at one time, 2 tile layers, 1 text layer, 1 sprite layer with hardware sprite zooming, 1 road layer, can draw 2 roads at once, translucent shadows
But the goold ol' mushroom does have some horsepower ;)
by ob1
Mon Nov 12, 2012 7:50 am
Forum: Super 32X
Topic: Super VDP
Replies: 167
Views: 67385

Hello you all ! Long time no see. I'd like to answer to ammianus Every few months I return to these forums and try to reread this thread, hoping I'll understand better after having learned more on my own about programming a similar kind of demo for a while now. I still can't make heads or tails abou...
by ob1
Mon Oct 15, 2012 7:46 am
Forum: Blabla
Topic: Old computers are useful
Replies: 8
Views: 2764

Oooh ... naughty !
by ob1
Wed Jul 04, 2012 7:29 am
Forum: Super 32X
Topic: SuperH Registers Calling Convention
Replies: 4
Views: 3880

SuperH Registers Calling Convention

A little bit of ASM-to-C (et vice-versa) with this compilation of documents I've done, maybe it helps.

http://www.valpocl.com/SuperVDP/superh_ ... etion.html

PS : pity I couldn't insert HTML :(
by ob1
Tue Jul 03, 2012 10:42 pm
Forum: Super 32X
Topic: Neo Geo 32X
Replies: 11
Views: 6886

Definitely.
And could aim 60fps !!!
by ob1
Tue Jul 03, 2012 8:52 am
Forum: Super 32X
Topic: 32X docs
Replies: 15
Views: 11213

http://www.valpocl.com/SuperVDP/32x_hardware_manual.pdf

Please, consider making a copy (be it local or online)
by ob1
Tue Jul 03, 2012 8:49 am
Forum: Super 32X
Topic: Neo Geo 32X
Replies: 11
Views: 6886

Allll right.
I should'n have done any teasing.

I'm still working on sprites for the 32X, and have found that using a NeoGeo approach (everything is a sprite) would work much better thant the tile way.

So, I eventually will finish my NeoGeo-ish sprite engine, and it will be called NeoGeo32X.
by ob1
Wed May 23, 2012 7:03 am
Forum: Megadrive/Genesis
Topic: fast way to compute distance between two points?
Replies: 13
Views: 5706

@Nemesis : +1
by ob1
Fri May 11, 2012 6:54 am
Forum: Super 32X
Topic: Neo Geo 32X
Replies: 11
Views: 6886

Neo Geo 32X

Teasing ...