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karri last won the day on December 31 2016

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About karri

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    River Patroller
  • Birthday May 21

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    Espoo, Finland
  • Interests
    Swing dancing. Acting, Swing dancing. Atari Lynx programming and Swing dancing.

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  1. That is the main reason why I use the default palette. It is the best compromize that also produces some distinguished colours on an original Lynx LCD screen.
  2. I have to try that one. I usually use GIMP. The best practice for me is to open my desired palette. I usually stay with the default palette in my games. Then I re-colour the large scale bitmap to these colours in RGB mode. After that I change the mode to indexed and choose my Lynx palette. As a final step I scale the graphics down to the target resolution.
  3. Thanks Igor! As usual I am using the default Lynx palette created by your neighbour @Cammy. It gives the optimum colour space for most games imho. So you are entering your red period. I also suffered from it with disastrous result. Close to last place in the competition. I don't remember the exact place anymore... Btw. I discovered a nice trick for creating Lynx resolution graphics. LEGO's. Building something from bricks and taking a snapshot allows you to create all kind of animals and vehicles without details. https://www.mecabricks.com/ Real LEGO's are nice too. If you still have them.
  4. Once you power it on you could measure signals. The first is the clock. Is the clock ok. Does the RESET signal generate a proper startup RESET. Then you could look at the read strobe OE to the cart. Does the CPU try to access the cart at all? Then you could look at the data bus. Is there clearly different states like '0' and '1' on the D0..D7 pins. There may also be conductive acid on the PCB surface. If you measure resistance of the green fiberglass does it conduct electricity? If it does get some Isopropanol to clean it away. There is also a lot of components missing on the PCB like transistors, capacitors, diodes... I assume removing them has been intentional.
  5. Lucky me. I still got almost 2 weeks But I decided to continue on my boat on Thursday. So I hope to finish the game tomorrow. It will be just one game this time. Here frantic fight against space crabs.
  6. Perhaps the proper solution is to abandon SD saves. The better alternative is the El Cheapo approach with a real eeprom. Especially now as we have two SD carts incompatible with each other.
  7. Same here . Ground shadows are still missing for moving objects. The flying drone with moving propellers turned out great! Music and sound effects are still missing as well as most of the encounters. But I will definitely complete the game a week early. (If the rain keeps pouring as it does now.)
  8. I just realized that I missed the sprite file of Ottelo. It comes here: sprite.spr Plus the compiled binary: ottelo.o This was part of a 1024 byte competition. In Lynx Reloaded cart there is a more advanced version with music and sound effects. The more advanced version with a music engine: ottelo2.asm
  9. The BLL structural assembler is really cool for programming. A small example attached. ottelo.asm
  10. This GND Y makes no sense. My guess is that the RetroPie already use some key combinations for other purposes. As I was mainly interested in emulating the lynx I had Opt1, Pause and Opt2 mapped. I believe that SPACE was also mapped to Pause. It may also be easier to map buttons to characters instead of special modifer keys.
  11. I just read a NASA article of space-time crystals. This fits better than perfect to my ricochette-bullets engine. As everyone knows in 2040 Titan has the best space-time crystals in our solar system.
  12. Ok. Two weeks to go. i accidentally read the rules and found out that my game and sequencer don't even remotely qualify for the competition. So I tossed these entries and started on a new one. This time in space. I also dropped out of the jam. But if I get this together I will enlist again.
  13. karri


    Evercade looks really good.
  14. karri

    Analogue Pocket

    The Lynx adapter is available separately. It is not included. I also wonder a bit on the fact that there is no ROM code in the Analogue Pocket. This also means that it cannot boot everything a real Lynx can. Some people may rely on an existing ROM in the unit.
  15. I used the Lynx I. It has +5V which is bad for the Pi. So I had one resistor from the button to the GPIO pin and another resistor between the GPIO pin and ground. This worked as a voltage divider. The reason is the the Lynx I emits +5 V through the button when you press it. In your case you are only using the ribbon cable so there is no need for resistors to drop down the voltage. Just power the ribbon cable using the 3.3V from the Pi and you should be good.
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