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rj1307

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Posts posted by rj1307

  3. Posted

    20 hours ago, -^CrossBow^- said:

    Meant to ask @rj1307 how much current does DF actually take up?

    Dragonfly with LCD backlight on - 220mA
    Dragonfly with LCD backlight off - 200mA
    Dragonfly + console - 840-890mA
    Console + original cartridge - 640-680mA
    Console + built-in Asteroids game - 570mA 

     

    9.00V power supply from a laboratory power supply. 

    • Like 3

  4. Posted

    12 minutes ago, marauder666 said:

    i’ve no experience of programming an attiny, how do i go about doing it?

    You have to have a programmer or find someone nearby to program and the programs are available for free. The screenshot is from BascomAVR. 

     

    2 minutes ago, -^CrossBow^- said:

    How about when not using the DF and using the standard 7800 power? I frequently have to swap because I will want to use one of my 2600 flash carts and obviously have to remove the DF cart and power setup to do this. It would seem that with this in place, as soon as the ATTiny sees incoming voltage, it will try and turn the console on when you plug in the standard power cord?

     

    It will turn on but only once when plugging in the power adapter. After that, the console works normally with the POWER button. You don't disconnect the power supply when changing the cartridge, do you?
    If you have an AV mod, you can use the rear "Channel" switch to disconnect the signal from Attina. 

  5. Posted

    I tweaked my console so it would turn itself on when Dragonfly finishes loading the game.
     

     

    The operation of the system is very simple: when Dragonfly finishes loading the game and gives power to the console, the presented system waits 500ms, gives the low state to pin 3 of the CD4013 chip and after 200ms it goes into a high impedance state. The console will turn on. I use the Brown-Out Detection (BOD) feature of Attiny13A to detect the shutdown of the power supply. When the voltage drops below 4.3V, the AVR will be reset and the program will restart. 

     

    Attiny.thumb.png.448d0be295aa4f2c729f6cda01ea63dd.png

     

    The assembly is non-invasive, you can return to the original at any time. 

    IMGP8801.thumb.jpg.a8da494f2c626a162076d71e656d60ee.jpg

     

    IMGP8803.thumb.jpg.d8e6e0fcbe0a29ee3227b6e7151629f3.jpg

     

    In the attachment I include everything that is needed to make such a modification. :)  

     

    mod_autostart.zip

    • Like 1

  8. Posted

    I have a problem with running 7800basic on Linux, trying to compile generates an error: 

     

    7800basic.sh simple.bas: ERROR: couldn't find 7800basic binaries for Linux(x86_64). Exiting.

    echo $PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/x/7800basic

    echo $bas7800dir: /home/x/7800basic

     


    Where to look for the cause? 

     

  10. Posted

    3 hours ago, DrVenkman said:

    The files Rafal posted today for the update to the Dragonfly BIOS includes a copy of this. Although listed as PAL, it does load on my NTSC system and plays POKEY audio, but the screen is a little jumpy and COVOX samples don't seem to play.

    Have you turned on the IRQ for the Pokey? 

  13. Posted

    Software update!
    Changes: 

    * Possibility to turn off the LCD backlight in "Forced Power Supply". 
    * Added header bit support for Double Pokey and Yamaha. Now setting these bits is necessary to get the sound. As a reminder, the current Cart Type settings are as follows: 

     

      bit 0    = pokey at $4000
      bit 1    = supergame bank switched
      bit 2    = supergame ram at $4000
      bit 3    = rom at $4000
      bit 4    = bank 6 at $4000
      bit 5    = supergame banked ram
      bit 6    = pokey at $450
      bit 7    = mirror ram at $4000
      bit 8    = activision banking
      bit 9    = absolute banking
      bit 10   = pokey at $440
      bit 11   = ym2151 at $460/$461
      bit 12   = souper
      bit 13-15 = special

     

    * Fixed bug that did not allow to go back to a higher directory when changing the game. 
    * Added an adjustable delay for restarting the console. The loading time of some games is so short that it did not allow the capacitors in the power supply of the console to discharge, causing it to reconnect itself. 
    * Added adjustable delay for scrolling files up / down. 
    * The "Force RAM" option has been removed from the Menu, the latest PMC_XM already has Yamaha detection.
    * Changed options displayed after loading the game. 
    * Automatic IRQ inclusion for games using Pokey has been added. For this to work, the Pokey @4000 or @0450 bit must be set in the header and the Pokey IRQ set to "Yes" in the Menu. When this option is set to "No", the IRQ will always remain off. 

     

    In the attachment: the latest firmware, current manual, YM and Dual Pokey files with modified headers. 

    v1.06.zip Manual.pdf Corrected files .zip

    • Like 10
    • Thanks 4

  15. Posted

    6 hours ago, Eagle said:

    I think it would be best to ask someone from Agenda to draw a nice pixelated drawing.

     

    The artwork was created by @MotionRide and it is unlikely that I will have a problem redrawing it, but I need to specify the resolution and number of colors. Therefore, I am asking you to give me these values :) 
    Do I have to pay attention to something to make PAL and NTSC work well? 

  16. Posted · Edited by rj1307

    I need a developer help!
    I'd like Dragonfly to be able to display a startup screen that is similar to the sticker art. I am looking for a person who will convert this image to a .bin file. I have a project with layers from the "Krita" program, or I can export individual layers to .png files.
    It is important that the startup screen looks correct on PAL and NTSC consoles.

     

    Thank you in advance for your help :) 

     

     

    dragonFly_2.png

    • Like 4

  17. Posted

    Which version of the motherboard is causing these crashes? Do you have the option to take a picture of her?

    To adjust the sound level of Pokey and Yamaha, there are three potentiometers available after removing the cartridge housing. This is described in the manual.
    The fact that you have a difference in volume level between PAL and NTSC consoles doesn't depend on Dragonfly, it's just the resistors and mods in the consoles. 

  22. Posted

    ATTENTION!
    I incorrectly entered the addresses for Covox in the manual, the following are correct:
    The reserved area for Covox is $0430- $043F, appearance of an address within this range will activate Covox. The channel addresses are:
    $0430 - channel 1
    $0431 - channel 2
    $0432 - channel 3
    $0433 - channel 4

     

    Sorry for the confusion :( 

  23. Posted · Edited by rj1307

    ATTENTION!
    I incorrectly entered the addresses for Covox in the manual, the following are correct:
    The reserved area for Covox is $0430- $043F, appearance of an address within this range will activate Covox. The channel addresses are:
    $0430 - channel 1
    $0431 - channel 2
    $0432 - channel 3
    $0433 - channel 4

     

    Sorry for the confusion :( 

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