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martinez

Member Since 22 Jun 2016
OFFLINE Last Active Today, 9:59 PM

Posts I've Made

In Topic: Whats up with Jerzy Sobola's site

Mon Jun 4, 2018 6:32 PM

Here is up-to-date link to Jerzy Sobola's website:

 

http://www.jsobola.a...tari/index.html


In Topic: STE-VGA scandoubler demo

Mon Mar 5, 2018 3:20 AM

Well. The picture is sharp. Moving objects are fluid. The scrolling on Grand Prix Simulator looks very decent. It's excellent! :thumbsup:

Some standard questions:
1. Is it lag-free?
2. Any special requirements for VGA display? This device will work with any monitor, tv, projector with VGA input?

 


In Topic: Lynx Multi Card Preorders

Fri Feb 23, 2018 10:36 PM

@SainT,

 

I'm in for one Multi Card. Please put me on the list.

 

Thank you :)


In Topic: NOS Atari 130XE - Not working, Need Help!

Sat Feb 10, 2018 3:01 AM

Each NTSC Atari I have seen before (not in the flesh actually, I mean pics ;)) was US origin. Therefore it has FCC ID# on bottom label. No FCC compliance text = the machine is probably PAL.

Although I may be wrong, just guessing :roll:


In Topic: The mT RAM investigation thread. Show yours, good or bad....

Wed Jan 10, 2018 12:33 AM

Some science here: http://citp.princeto...esearch/memory/

Atari found out, that DRAMs from particular series "remember" bits for a long time after the power is off. And if you switch power off and on to force cold start, the computer boots with garbage on screen, then hangs up. So they developed a fix: mix each set of DRAMs with a single chip from another batch, the "fast forgetting" one, and the assembled computer passes tests OK! It was easy and cheap, so they did it.

Can't see anything unbelievable in such a story. It is recommended to add one or two different chips when replacing defective RAM in XL/XE's, it's common practice actually. And I didn't make it up, it came from guys good at electronics.