I made a "hello world" assembly demo a year or two ago when working on a few programming tutorials, but never ended up posting it anywhere.
I'm not sure how it stacks up against others. I'm not really a programmer, so I have tons of bad practices. I'm sure it could have been done better, but I maybe ...
Search found 27 matches
- Mon Apr 16, 2018 12:43 am
- Forum: Megadrive/Genesis
- Topic: The perfect "Hello World" example for new starters
- Replies: 11
- Views: 19190
- Mon Mar 20, 2017 10:36 pm
- Forum: Megadrive/Genesis
- Topic: Aggregating Code Snippets
- Replies: 6
- Views: 10565
Re: Aggregating Code Snippets
Here is a little snippet I wrote some time ago, and use a lot.
It calculates the command to send to the VDP to do a VRAM write.
For example, you would write $41800001 to the VDP control port. to access $4A80 in VRAM. With this code, just set the target address into D0, call the routine, and the VDP ...
It calculates the command to send to the VDP to do a VRAM write.
For example, you would write $41800001 to the VDP control port. to access $4A80 in VRAM. With this code, just set the target address into D0, call the routine, and the VDP ...
- Mon Jul 04, 2016 3:57 pm
- Forum: Pico
- Topic: dev stuff on ebay
- Replies: 3
- Views: 63605
Re: dev stuff on ebay
This disc?
http://www.ebay.com/itm/The-Muppets-On-The-Go-Sega-Pico-Prototype-Development-Disc-Unreleased-Stuff-/291803828354?hash=item43f0dd1082:g:cIEAAOSwvg9Xa8RU
Bummer you didn't get it. Maybe we'll get lucky and the buyer will rip and release the disc image. I wouldn't count on it though.
I can ...
http://www.ebay.com/itm/The-Muppets-On-The-Go-Sega-Pico-Prototype-Development-Disc-Unreleased-Stuff-/291803828354?hash=item43f0dd1082:g:cIEAAOSwvg9Xa8RU
Bummer you didn't get it. Maybe we'll get lucky and the buyer will rip and release the disc image. I wouldn't count on it though.
I can ...
- Sat Jun 11, 2016 9:32 pm
- Forum: Megadrive/Genesis
- Topic: A few questions :)
- Replies: 15
- Views: 19253
Re: A few questions :)
The 32X is easy. Just look for the ASCII string "MARS" (4D 41 52 53) at $A130EC. If it says MARS, then a 32x is attached.
For the SEGA CD, you could try writing to the SCD's RAM, and try reading back to see if the value was stored. There is probably a better way though.
I'm not sure about Game Genie ...
For the SEGA CD, you could try writing to the SCD's RAM, and try reading back to see if the value was stored. There is probably a better way though.
I'm not sure about Game Genie ...
- Sun May 15, 2016 11:33 pm
- Forum: Demos
- Topic: Screensaver for sega genesis.
- Replies: 2
- Views: 4715
Re: Screensaver for sega genesis.
Looks cool! Thanks for sharing. I bet it would make a cool title screen.
It makes me wish that I was a better artist.
It makes me wish that I was a better artist.
- Wed May 04, 2016 4:50 pm
- Forum: Megadrive/Genesis
- Topic: Genesis Vdp Global Documentation
- Replies: 2
- Views: 4872
Re: Genesis Vdp Global Documentation
These two pages might be what you're looking for.
http://md.squee.co/VDP
http://wiki.megadrive.org/index.php?tit ... deo_system
http://md.squee.co/VDP
http://wiki.megadrive.org/index.php?tit ... deo_system
- Sat Mar 12, 2016 7:15 pm
- Forum: Demos
- Topic: Virtua Worm for SEGA Genesis
- Replies: 3
- Views: 6368
Virtua Worm for SEGA Genesis
We've had virtua cop, fighter, tennis, and racing. Now it's time for Virtua Worm!
Gameplay:
The game is like a cross between snake and pac-man. It's essentially a clone of an old web game called nibblet. Check it out if you haven't played it before!
You have to navigate through a maze while ...
Gameplay:
The game is like a cross between snake and pac-man. It's essentially a clone of an old web game called nibblet. Check it out if you haven't played it before!
You have to navigate through a maze while ...
- Wed Mar 09, 2016 4:25 pm
- Forum: Announcement
- Topic: Idea to help slow down spammers
- Replies: 8
- Views: 33439
Idea to help slow down spammers
Why spammers have chosen this site as a target, I don't know. But they have, and they're persistent.
I think a lot of spam could be prevented if another barrier to entry was added during registration. I know there is a question to be answered like "What's the name of Sonic's best friend ?:".
That ...
I think a lot of spam could be prevented if another barrier to entry was added during registration. I know there is a question to be answered like "What's the name of Sonic's best friend ?:".
That ...
- Thu Feb 18, 2016 9:58 pm
- Forum: Megadrive/Genesis
- Topic: Virtua Racing Test Mode GameGenie Code
- Replies: 3
- Views: 5712
Re: Virtua Racing Test Mode GameGenie Code
I know you can't get in to the game with the GG attached. It just shows a black screen IIRC. Maybe you can at least get as far as that test menu?Sik wrote:So wait, Virtua Racing works with the Game Genie after all?
- Fri Jan 29, 2016 7:54 pm
- Forum: Blabla
- Topic: Problems accessing Spritesmind
- Replies: 19
- Views: 51204
Re: Problems accessing Spritesmind
Whatever was causing the problem, it seems to be fixed for me. For now.
I just tried going to the site on my normal browser from home, and it worked!
I did a traceroute again, and it made 10 hops before having hops time out. I also tried pinging the site, and it didn't work at all.
I just tried going to the site on my normal browser from home, and it worked!
I did a traceroute again, and it made 10 hops before having hops time out. I also tried pinging the site, and it didn't work at all.
- Fri Jan 29, 2016 12:29 am
- Forum: Blabla
- Topic: Problems accessing Spritesmind
- Replies: 19
- Views: 51204
Re: Problems accessing Spritesmind
Someone who is having this problem might want to run a traceroute (tracert on Windows). This should give you an idea of where the connection is dying.
Good idea. I just tried it. The results:
traceroute to gendev.spritesmind.net (213.186.33.40), 30 hops max, 60 byte packets
1 192.168.0.1 (192 ...
Good idea. I just tried it. The results:
traceroute to gendev.spritesmind.net (213.186.33.40), 30 hops max, 60 byte packets
1 192.168.0.1 (192 ...
- Thu Jan 28, 2016 7:22 am
- Forum: Blabla
- Topic: Problems accessing Spritesmind
- Replies: 19
- Views: 51204
Re: Problems accessing Spritesmind
Glad I'm not the only one...
I haven't been able to access the site for a few weeks, maybe a month. I can't access or even ping the site at all from my home network. It just times out. I thought maybe it was a DNS issue, but I can't even connect by typing in the site's IP address.
I can access the ...
I haven't been able to access the site for a few weeks, maybe a month. I can't access or even ping the site at all from my home network. It just times out. I thought maybe it was a DNS issue, but I can't even connect by typing in the site's IP address.
I can access the ...
- Wed Jan 06, 2016 2:47 pm
- Forum: Demos
- Topic: Matrix Digital Rain demo for Genesis
- Replies: 1
- Views: 4600
Matrix Digital Rain demo for Genesis
First homebrew of 2016!
Remember the matrix? I do. I never really cared for the movie, but I used to love the digital rain effect. I used it as my screensaver when I got my own PC for the first time in middle school.
I made this quick demo showing off the "digital rain" effect. It's kind of cool ...
Remember the matrix? I do. I never really cared for the movie, but I used to love the digital rain effect. I used it as my screensaver when I got my own PC for the first time in middle school.
I made this quick demo showing off the "digital rain" effect. It's kind of cool ...
- Thu Dec 17, 2015 12:08 pm
- Forum: SGDK
- Topic: Video problems on hw
- Replies: 20
- Views: 16523
Re: Video problems on hw
Are you clearing out the 68K's RAM first? Or does SGDK do it for you?
When I was doing homebrew stuff, everything worked fine in every emulator. I eventually got an everdrive, and ran some of my stuff on it. I learned the hard way that you can't expect RAM, registers, or anything else to be cleared ...
When I was doing homebrew stuff, everything worked fine in every emulator. I eventually got an everdrive, and ran some of my stuff on it. I learned the hard way that you can't expect RAM, registers, or anything else to be cleared ...
- Thu Dec 03, 2015 9:43 pm
- Forum: Megadrive/Genesis
- Topic: The best in-game videos in Sega Megadrive/Genesis games?
- Replies: 12
- Views: 10831
Re: The best in-game videos in Sega Megadrive/Genesis games?
Sonic 3D blast had an FMV intro.
https://www.youtube.com/watch?v=JO0mnkHpT3A
https://www.youtube.com/watch?v=JO0mnkHpT3A