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Raspberry Pi and Lynx


karri

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Hi,

 

The Linux community is currently going crazy about Raspberry Pi - credit card size cheap stand-alone computer.

 

I am trying to get my hands on one as well. It might be possible to program one GPIO pin to emulate ComLynx exactly. This would allow Raspberry Pi to ComLynx with real Lynx hardware.

 

The price of the computer is $35 (USD) and it has Ethernet, USB's, HDMI output. And it runs from a SD-card.

 

It would be quite simple to create a small add-on card with a cart socket and a ComLynx plug to produce a large screen non-portable Lynx.

 

--

Karri

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I found the datasheet for BCM2835 on the net. It has a nice SPI port that appears to be flexible enough to work as a native ComLynx port. The good thing is that it seems to be capable of reading and writing non-standard bitlengths so the weird Lynx parity can be implemented as an extra data bit.

 

The next thing is that the chip also has a built-in PCM audio port. For good emulation of Lynx sound I believe that banging the port directly from the emulator is the way to go. Then we can say goodbye to stuttering sounds.

 

And the graphics is naturally OpenGL accelerated into a HDMI monitor. So we could run pixel smoothing to reduce blockiness of the picture when the image is blown up from 160 by 102 to 1920 by 1080.

 

This could become the Ferrari of Lynx emulation :)

Here is Rapberry Pi next to a mobile phone

 

post-2099-0-87303900-1331016165_thumb.jpeg

 

--

Karri

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Where can I order one of these? I wonder if I am only visiting a mobile site rather than the normal site

 

RaspBerry at http://downloads.element14.com/raspberryPi1.html for 35 €

8G SD card at http://www.verkkokauppa.com/fi/product/19473/rvjq/Transcend-8-GB-SDHC-muistikortti for 12.90 €

7" tv at http://www.verkkokauppa.com/fi/product/6556/vvtc/ProCaster-DTV-007-Widescreen-7-digi-TV for 69.90 €

joypad at http://www.verkkokauppa.com/fi/product/47590/ddjkn/Subsonic-Pro-Controller-Fluo-PC-PS3 for 29.90 €

 

Grand total for a new portable Lynx is..... 147.70 €. Around 4 times more expensive than a real Lynx at ebay.

 

:)

 

Karri

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Is the rasperberry Pi just a 21st century version of the iconic altair 8080 (or apple 1/ and the single board computer that clive sinclair did prior to the zx80, forgot what it was called)

 

i.e a 'build/program it yourself' computer

 

Yep. There is more hype than beef in Raspberry Pi. In Raspberry everything is in a single chip. I mean the whole computer is in a chip.

 

But it has very little RAM and the CPU has severe limitations. But it is good enough for a Lynx and uses only 2W that it steals through the USB port.

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  • 3 weeks later...
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Did you see this one? http://www.instructables.com/id/Raspberry-Pi-Arcade-Game-Emulator-in-an-Atari-Lynx/

Damn I would really want one of those (and the lynx screen replacement), maybe I have to learn soldering after all.

 

That is cool and would probably be easier to do than the one I built. I did the same, but with a Gameboy shell and it was pretty tight. The Lynx would have ample room to fit everything in and could pack a huge battery. I might have to try this.

 

For references, here is the one I did for the Game Boy: https://superpiboy.wordpress.com/

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Nice Gameboy hack but I think I would prefer something a little wider like Lynx or GBA for hacking in a Pi. They are more comfortable to hold than the tall Gameboy. When I hold, even the old fat model, my fingers often overlap on the back and it can get warm and sweaty back there. Then I run the risk of slipping at an important jump or shoot time and getting killed instead.

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Nice work on the superpiboy MicroByte, it looks great!

 

I can see your piboy instructions are much more thorough than the Lynx instructable, so If you do the Lynx one it would be awesome if you would ad as detailed and good instructions for that one as well :-D I've been staring at that instructable for a month now trying to gather the courage to order all parts. I wonder if it's possible to fix it programmatically in retrogame if I somehow get the lynx button routing mixed up to the gpio? I mean the button mapping code looks simple.

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