Prototype Atari PCB made!

usbcd36 · Post by **usbcd36** » Thu Jul 21, 2005 5:34 pm

You mean the whole entire Atari, not just the part Ben cuts off and uses?

Post by **gannon** » Thu Jul 21, 2005 5:44 pm

well.. it doesn't have RF

The current pcb is basically the equivalent of the 4x4 mod of Bens. You have to solder on the joystick ports, cart slot, and your own video mod. Right now I have those on a small bread board (with the caps)

usbcd36 · Post by **usbcd36** » Thu Jul 21, 2005 6:44 pm

I don't really understand why Ben doesn't tell people to desolder the capacitors BEFORE slicing through the motherboard.

I guess it comes from personal experience. Also, there doesn't seem to be a good video mod out there that's cheap and has good color. I suppose the one with the chip (the $20 one, not the $60 one) is good, but it's too dark. Ben's mod is bright, but the green appears yellow, and there are bands of magenta in the gradients.

A.J. Franzman · Post by **A.J. Franzman** » Thu Jul 21, 2005 9:29 pm

usbcd36 wrote:Ben's mod is bright, but the green appears yellow, and there are bands of magenta in the gradients.

Ben's mod does nothing that could cause either of those two artifacts. For the green appearing yellow, it sounds like you need to tweak the chroma phase pot on your Atari board (or off it, if you've done the 4x4 cut-down). Regarding bands of magenta in "the gradients", what gradients are you referring to? This could be any of a number of different problems, including a problem with the TV/monitor/screen you're using, or possibly too high of a chroma level.

HK-47 · Post by **HK-47** » Mon Jul 25, 2005 5:24 pm

SpongeBuell wrote:
gannon wrote:I really should finish it... or better yet, I could sell my prototype board, the schematics, pcb design, and parts (2 sets of atari chips too ) since I'm lazy
I'll give you $5 for it

Id also buy it, I bid $5.01!

Post by **Gamelver** » Mon Jul 25, 2005 6:26 pm

$5.03!!!!! beat that!!

Metroid fan · Post by **Metroid fan** » Mon Jul 25, 2005 9:51 pm

5.05 [music]dun dun duh[music]

usbcd36 · Post by **usbcd36** » Mon Jul 25, 2005 10:43 pm

A.J. Franzman wrote:
usbcd36 wrote:Ben's mod is bright, but the green appears yellow, and there are bands of magenta in the gradients.
Ben's mod does nothing that could cause either of those two artifacts. For the green appearing yellow, it sounds like you need to tweak the chroma phase pot on your Atari board (or off it, if you've done the 4x4 cut-down). Regarding bands of magenta in "the gradients", what gradients are you referring to? This could be any of a number of different problems, including a problem with the TV/monitor/screen you're using, or possibly too high of a chroma level.

Check the Atari info thread and the video mods link. You'll see what I mean about the green and the magenta bands. The only perfect mod is the Ã¼ber expensive one that plugs into the Stella socket and replicates the port for the chip.

S q u e e ! · Post by **S q u e e !** » Tue Jul 26, 2005 9:50 am

How is it Ã¼ber expensive? And which one are you talking about, anyway?

Post by **SpongeBuell** » Tue Jul 26, 2005 11:36 am

Chris Wilkson made a whole new mod, but it doesn't use off-the-shelf parts, like Ben's mod. You install it by pulling the Stella out of the socket, putting in this card, and putting the Stella in the socket in the card. The hardware was really finely tuned, and the quality is fantastic. The card costs ~$75, IIRC.

Metroid fan · Post by **Metroid fan** » Tue Jul 26, 2005 10:15 pm

HOLY thats tons

usbcd36 · Post by **usbcd36** » Tue Jul 26, 2005 10:26 pm

Yeah, but it has near perfect video quality and even looks sweet. It even supports S-Video! I would get it, but I will probably have empty pockets after getting a PSOne screen, another GameCube, and the li-poly batteries. Not to mention I don't have an Atari in the first place

.

vb_master · Post by **vb_master** » Sun Jul 31, 2005 2:06 pm

Wheres my PCB layout?

usbcd36 · Post by **usbcd36** » Sun Jul 31, 2005 3:17 pm

It's not here, just waitâ€¦

Post by **Sparkfist** » Sun Jul 31, 2005 5:15 pm

vb_master wrote:Wheres my PCB layout?

Didnt Gannon say that he would post it once he was sure it worked? Also if your desperate he does have the prototype PCB layouts in his image archive.