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Not computers, but retro.

Started by JKnightandKARR, Dec 02, 2025, 08:37 PM

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JKnightandKARR

A website that has Retro game systems, not everything, seeing Atari 2600/7800 be nice, but still some of the old stuff to play old games online!
https://rec0ded88.com/

JKnightandKARR

NNNNNOOOOOOOOO!!!!! still can't play duckhunt....

Chris Savage

Quote from: JKnightandKARR on Dec 04, 2025, 10:41 AMNNNNNOOOOOOOOO!!!!! still can't play duckhunt....

I can't remember if I have that one on my RetroPie. I wish the game would let me shoot the dog when it laughs at me. LOL (just kidding)

                    Bringing concepts to life through engineering.

JKnightandKARR

Quote from: Chris Savage on Dec 04, 2025, 10:58 AM
Quote from: JKnightandKARR on Dec 04, 2025, 10:41 AMNNNNNOOOOOOOOO!!!!! still can't play duckhunt....

I can't remember if I have that one on my RetroPie. I wish the game would let me shoot the dog when it laughs at me. LOL (just kidding)
LIAR!! You know we ALL did that!! Lol

granz

It was pretty impressive what Nintendo was able to do with a simple photo-diode and a lens. The rest was just timing of the television sweep.

Chris Savage

#5
Quote from: JKnightandKARR on Dec 04, 2025, 10:41 AMNNNNNOOOOOOOOO!!!!! still can't play duckhunt....

I guess I assumed you'd be able to use the mouse pointer in lieu of the light gun. I didn't see Street Fighter II on there anyway (my favorite on SNES).

Quote from: granz on Dec 04, 2025, 03:53 PMIt was pretty impressive what Nintendo was able to do with a simple photo-diode and a lens. The rest was just timing of the television sweep.

You're referring to the light gun. Yeah, very clever input device. Not new technology, but new in the sense of the range they got from it. Light pens required touching the CRT before that.


                    Bringing concepts to life through engineering.

granz

Quote from: Chris Savage on Dec 05, 2025, 09:49 AMYou're referring to the light gun. Yeah, very clever input device. Not new technology, but new in the sense of the range they got from it. Light pens required touching the CRT before that.
Yes, the Air Defense computer that we maintained in the Air Force (the BUIC - Backup Interceptor Controller https://en.wikipedia.org/wiki/Back-Up_Interceptor_Control) had a light gun on the DDC (Data Display Console.) This was the old fashioned "touch-the-screen" gun with a photo-diode inside. There was a cable going from the back of the gun to the DDC.

These DDCs were vector displays, everything - including the text - was generated by vector "commands". The image for the console's display was generated from data on a magnetic drum. Each word contained the starting X and Y location, the direction, and length of the trace and an address for which display (out of the eleven DDCs) displayed that trace.

One trace would be drawn, and then the next, and the next, and so on. Refresh rate was completely dependent on how much data was on the screen. So, when the photo-diode would spike, the console would just take the drum address of the current trace, and send that to the computer. Thus the program would be able to determine what the operator selected with his light gun. This was a pretty impressive display/selection system. Each display would be showing the map of our Air Defense coverage (from about Langley, VA, down to Key West, and then up along the Gulf to Laredo, TX) including state outlines. At the same time, the display would show the tracks of dozens, to hundreds, of aircraft, along with the information about each bird (Air Force talk for an airplane.) The displays could also be zoomed in, and out, and redirected to anywhere in (or near) our Air Division coverage.

For the system to select any one trace out of many thousands of traces on the screen at one time was very impressive for 1960s technology.

JKnightandKARR

Quote from: Chris Savage on Dec 05, 2025, 09:49 AM
Quote from: JKnightandKARR on Dec 04, 2025, 10:41 AMNNNNNOOOOOOOOO!!!!! still can't play duckhunt....

I guess I assumed you'd be able to use the mouse pointer in lieu of the light gun. I didn't see Street Fighter II on there anyway (my favorite on SNES).

Quote from: granz on Dec 04, 2025, 03:53 PMIt was pretty impressive what Nintendo was able to do with a simple photo-diode and a lens. The rest was just timing of the television sweep.

You're referring to the light gun. Yeah, very clever input device. Not new technology, but new in the sense of the range they got from it. Light pens required touching the CRT before that.

That's the first thing I tried.... so far nada....  Wish there was a way to mod the gun or whatever to work on current tvs....