Search found 27 matches
- Sat Dec 26, 2015 8:42 pm
- Forum: Megadrive/Genesis
- Topic: Why not to DMA this?
- Replies: 4
- Views: 4531
Why not to DMA this?
In a while I'll try to do some effect based in Hblank. First of all I went on analyzing some other code, and this is the code that Sonic the Hedgehog uses for reloading the palette for the water: DrawWater: move #$2700,sr tst.w (f_hbla_pal).w ; is palette set to change? beq.s @nochg ; if not, branch...
- Mon Sep 07, 2015 3:41 pm
- Forum: Megadrive/Genesis
- Topic: VDP is skipping commands?
- Replies: 0
- Views: 10232
VDP is skipping commands?
Hello. This time I'm trying something different for Sega CD... Keep SubCPU to process all the main engine, and MainCPU to process all I/O. For such, I have done the following: From SoulessSentinel's SCD template, I have done exactly the inverse method: SubCPU to hold all the main code, and MainCPU t...
- Wed Sep 02, 2015 12:14 am
- Forum: Megadrive/Genesis
- Topic: Unknown warnings from Gens KMod
- Replies: 2
- Views: 3022
Re: Unknown warnings from Gens KMod
The message itself is valid, but not the source addresses :P. I got access to my Desktop PC again where I have a modded version of Genesis Plus GX for retroarch with error logs enabled, and although my code mistakenly indeed do write at those bad locations, the bad code was from a much earlier locat...
- Sat Aug 29, 2015 2:33 pm
- Forum: Megadrive/Genesis
- Topic: Unknown warnings from Gens KMod
- Replies: 2
- Views: 3022
Unknown warnings from Gens KMod
So, I decided to give a try to some special Gens KMod debugging features, apart from the typical memory viewers and such. After enabling a few of "Spy strange behaviors" features, I get the following warnings: Spy : 202CBC want to write a Word at 00BFFFFC Spy : 202CBC want to write a Word at 00BFFFF...
- Fri Aug 07, 2015 3:53 am
- Forum: Mega/SegaCD
- Topic: Sega CD (US) BIOS Disassembly @ GitHub
- Replies: 7
- Views: 16469
- Fri Aug 07, 2015 3:23 am
- Forum: Megadrive/Genesis
- Topic: Confusion about interrupts
- Replies: 1
- Views: 2425
Confusion about interrupts
I'm very confused about when do H-int and V-int happen. Please take in consideration I put most of VDP writing code on V-int section. Does the V-int code run before, or after the frame is drawn? If happens after, then does it mean that what we see on screen is 1 frame delayed? :O And, does the H-int...
- Wed Apr 22, 2015 2:42 pm
- Forum: Mega/SegaCD
- Topic: SegaCD debugging emulator?
- Replies: 12
- Views: 21671
Okay. Here are the files I have built: -Wii version -Game Cube version -Linux-based RetroArch version http://www.mediafire.com/download/tg7qcwv8zvao22o/GenPlus-GX_CDCrash.tar.gz I'll try compile the Windows-based RetroArch version (the .DLL module) as soon as I get free from the pile of work univers...
- Mon Apr 20, 2015 9:12 pm
- Forum: Mega/SegaCD
- Topic: SegaCD debugging emulator?
- Replies: 12
- Views: 21671
Hmmm... the truth is that I don't use a Windows OS... and I don't really know how to edit the libretro's makefile to output a DLL... I use Ubuntu, and by default a .SO file is generated upon build. I just don't know how to let it build a .DLL file, but I may check it some time. What I can do however...
- Thu Apr 16, 2015 11:06 pm
- Forum: Mega/SegaCD
- Topic: SegaCD debugging emulator?
- Replies: 12
- Views: 21671
- Thu Apr 09, 2015 12:52 am
- Forum: Mega/SegaCD
- Topic: SegaCD debugging emulator?
- Replies: 12
- Views: 21671
Heh, sure =D. Though that's the only "big issue" I have found so far (apart of not emulating the illegal addressing issues, but that's usually something the ASM compiler I use do take care of :P ). I have already tried to insert the check in both KMod and GenGX+ source codes, but everything went on ...
- Sat Apr 04, 2015 6:06 am
- Forum: Mega/SegaCD
- Topic: SegaCD debugging emulator?
- Replies: 12
- Views: 21671
- Tue Mar 10, 2015 2:38 am
- Forum: Megadrive/Genesis
- Topic: How to crash the emulator?
- Replies: 3
- Views: 4704
How to crash the emulator?
Time for a goofy question now... but here it goes: Years ago, while trying to learn the basics of the console, I had bugs, lots of bugs. But in a single ocassion, I made it bad enough the game didn't crash, but the emulator. Until today I haven't been able to do it again; I don't remember how I done...
- Tue Feb 17, 2015 7:43 pm
- Forum: Megadrive/Genesis
- Topic: Simple question about screen resolution, on hardware
- Replies: 4
- Views: 5025
- Tue Feb 17, 2015 4:50 pm
- Forum: Megadrive/Genesis
- Topic: Simple question about screen resolution, on hardware
- Replies: 4
- Views: 5025
- Mon Feb 16, 2015 11:20 pm
- Forum: Megadrive/Genesis
- Topic: Simple question about screen resolution, on hardware
- Replies: 4
- Views: 5025
Simple question about screen resolution, on hardware
EDIT: Seems like a new forum has been introduced, and I should have posted this thread there . I'm sorry! *facepalm* As for NTSC hardware, as far as I know, adapter renders four border to screen's four edges, while the "graphical" part is stored at the center... now my question is, are those borders...