Search found 36 matches

by EvilSandwich
Thu Dec 05, 2019 6:03 pm
Forum: General Discussions
Topic: Is it possible to overclock a 6502 to 100GHz
Replies: 42
Views: 6183

Re: Is it possible to overclock a 6502 to 100GHz

Okay okay okay. Can I just say that topics like this are why I adore hobby forums like this?

I'm of the same mindset as most people here. I first ask myself, "B-but why tho?" And then my baser nerd instincts kick in and I'm like, "But I kinda wanna see it done anyway. Just because I wanna see if ...
by EvilSandwich
Thu Dec 05, 2019 5:33 pm
Forum: Newbies
Topic: Need help with an incrementing 16-bit pointer
Replies: 64
Views: 13797

Re: Need help with an incrementing 16-bit pointer

cjs wrote:
Where is this PDF posted? That page seems to link only to Amazon to buy hardcopy or Kindle versions of the book.
Ba-Boom!

https://archive.org/details/65816programmanual

I would still buy it though. I love having a physical book in my lap when I'm working on a project.
by EvilSandwich
Wed Nov 27, 2019 1:51 am
Forum: Newbies
Topic: Working on a crude physic engine
Replies: 9
Views: 16328

Re: Working on a crude physic engine

Much of the issues you're seeing for the lack of definitions is due to the limits of the javascript assembler I'm using.

Equates are far better, but it handles equates fairly awkwardly since it's mostly designed as a teaching tool rather than a serious assembler. I've had to make compromises ...
by EvilSandwich
Tue Nov 26, 2019 3:55 pm
Forum: Newbies
Topic: Why no "gameboys"?
Replies: 31
Views: 5948

Re: Why no "gameboys"?

The Game Gear's screen wasn't too bad, but holy mackerel, the Lynx's screen is almost completely unwatchable at points.

I've been thinking about making a VGA compatible console machine someday. Controller inputs actually seem easier to keep track of than all the of the ASCII codes required for ...
by EvilSandwich
Tue Nov 26, 2019 3:32 pm
Forum: Newbies
Topic: Working on a crude physic engine
Replies: 9
Views: 16328

Re: Working on a crude physic engine

Okay, I'm still figuring out the basics of the other subroutines, but in the meantime I coded a "framework" to seamlessly insert the collision and momentum subroutines later as I figure them out. Just to keep it all organized and save me the trouble later ...
by EvilSandwich
Tue Nov 26, 2019 1:45 am
Forum: Newbies
Topic: Why no "gameboys"?
Replies: 31
Views: 5948

Re: Why no "gameboys"?

I was one of the kids in the 90s that got a Game Gear. Can confirm.
by EvilSandwich
Mon Nov 25, 2019 7:43 pm
Forum: Newbies
Topic: Why no "gameboys"?
Replies: 31
Views: 5948

Re: Why no "gameboys"?

Well, I stand corrected then. It must have been the surrounding hardware that was the issue.
by EvilSandwich
Mon Nov 25, 2019 12:43 pm
Forum: Newbies
Topic: Why no "gameboys"?
Replies: 31
Views: 5948

Re: Why no "gameboys"?

Yeah, all my previous projects have built-in 3.7v LiPo cells, they're pretty easy to work with most of the time. The AAAs thing was just something I was considering.
Oh, you're wayyyyy ahead of me then. What kind of screen are you thinking of using?

I admit, I've never installed anything more ...
by EvilSandwich
Mon Nov 25, 2019 11:53 am
Forum: Newbies
Topic: Why no "gameboys"?
Replies: 31
Views: 5948

Re: Why no "gameboys"?

The Atari Lynx was an interesting piece of hardware under the hood with a few decent games.

You're better off using an emulator if you wanna test programs on it though. The actual physical hardware on it was notoriously bad. Particularly the screen, which was extremely prone to ghost images and ...
by EvilSandwich
Mon Nov 25, 2019 11:11 am
Forum: Newbies
Topic: Why no "gameboys"?
Replies: 31
Views: 5948

Re: Why no "gameboys"?

The handheld Atari Lynx ran on a 65SC02, if I recall correctly. Which was a CMOS 6502 without bit instructions.

Coincidentally, I recall it having a battery life, so short, that you could bake muffins to it. I wonder why. lol
by EvilSandwich
Sun Nov 24, 2019 9:53 am
Forum: General Discussions
Topic: Yamaha Sound Chip for the 6502
Replies: 4
Views: 1169

Re: Yamaha Sound Chip for the 6502


More than the old SID chips, I just ran into the FPGASID 6581 and 8580 SID replacement available to buy, based on a modern FPGA. It has cycle-exact reproduction of the original parts, exact modeling of the analog parts leading to a result that is almost indistinguishable from the original, but ...
by EvilSandwich
Sun Nov 24, 2019 6:01 am
Forum: General Discussions
Topic: Yamaha Sound Chip for the 6502
Replies: 4
Views: 1169

Yamaha Sound Chip for the 6502

I know that it a bit early for me to be thinking about this kinda thing since I'm quite new to building a computer, but I've been slowly but surely thinking of designs in my head for different pieces of hardware I could use in my future project. I've been sort of fixated on the idea of putting in a ...
by EvilSandwich
Tue Nov 19, 2019 9:20 am
Forum: Newbies
Topic: Working on a crude physic engine
Replies: 9
Views: 16328

Re: Working on a crude physic engine

Oh, I didn't even think of bouncing. Thats a good idea.

I was just going to use it to let the dot fall after it jumped or fell off a platform.
by EvilSandwich
Mon Nov 18, 2019 10:38 pm
Forum: Newbies
Topic: Working on a crude physic engine
Replies: 9
Views: 16328

Working on a crude physic engine

I gotta say, its super fun trying something and failing again and again until that one magical moment when the code is finally lines up in a way that makes what you're trying to do actually kinda work.

After having that happen to me a few times while learning 6502 in the last couple months, I can ...
by EvilSandwich
Sun Nov 10, 2019 2:42 am
Forum: Newbies
Topic: Need help with an incrementing 16-bit pointer
Replies: 64
Views: 13797

Re: Need help with an incrementing 16-bit pointer

Okay, I lied. That confetti draw subroutine was bugging me and I had to streamline it.

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Waiting for input ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Press W to Pop Confetti Forever! ;
; Press O to Pop Confetti Just Once ;
; Press Q to End Program ...