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Lavalamp

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Posts posted by Lavalamp

  1. Posted

    Moving right along! :)

     

    Loosely fitting the new headers to the U1MB, plugging in the female headers I made on Saturday, and then soldering it all together went perfectly. The U1MB fits snugly when seated, but still readily removable if necessary. I also got started on the rest of the headers and connectors on the board. Hopefully MacRorie will get the rest of the UAVs he's waiting on, along with the new video jacks. The RGB jack is nice to have but useless for me and my planned near-term usage (may add a Sophia down the line but probably not).

     

    attachicon.gifIMG_9494.JPG

     

    attachicon.gifIMG_9499.JPG

     

     

    Nice! Not too keen to show you guys my progress now that I see there's use of the correctly spaced capacitors (not a dig at you Mike ;) ) I soldered my resistor network DIPs, not in sockets like yours, wondering why you would? Do they fail?

     

    I'm building a PAL version (for NZ) Thanks to your photo I now notice I should have added 952-2538-ND to my Digi-Key order for position X2 so the CO16112 could be easily pulled and replaced with the NTSC crystal. It wasn't in the part number column in the BOM

     

    Heres to seeing it fire up!

  3. Posted

    So the incorrectly specified 0.1uf capacitor has had far reaching consequences. And as I discovered today it's infected two other projects, the XEL-CF-][ and the JOY2PIC-STIK. So let me tell you the story on how all of this came to be...

     

     

    Bummer wished I had seen this in time, mine are already on and wonky, apart from aesthetics I assume this wont cause a problem?

  4. Posted · Edited by Lavalamp

    You can also route the RGB through the 13pin DIN connector (ST Monitor)

     

     

    This is interesting, how best to approach this? Would I pass the ribbon underneath the board and solder the connections to the plugs pins on the underside of the board?

     

     

    Oh scratch that I see there's a RGB header next to the GITA, this goes to the RGB port? There's a new Sofia to accommodate this?

     

  7. Posted

    I sent Simius a PM yesterday with a suggestion that Sophia RGB boards destined for the 1088XEL should come with two connectors on the ribbon cable for the RGB output as shown below.

     

     

    This way the user has a choice. And especially in cases where something like a 1084D or a SC1435 is to be used, it gives you a much easier interface to come straight out of the DB9.

     

     

    Hi,

     

    I'm building a 1088XEL at the moment, and really enjoying it :grin:​ wife now thinks I'm a super nerd :) just need some clarification on my understanding of things...

     

    - The 1088XEL as built uses the ST RGB connector So I can use my ST's RGB /SCART cable?

    - The UAV board is used only for composite and SVIDEO output.

    - Sofia can be an option if you wanted to add a RGB out as a DB9 (I have one in my A8 at the moment)

    - CF is optional for internal storage device, you can still boot via SIO (I have the SIO2SD, 1050 etc)

    - Ultimate 1MB is required for the 1088XEL to work.

    - I need to source or crimp my own Joystick cables ( length depending on the case I choose to use)

    • Like 1

  8. Posted · Edited by Lavalamp

     

    The SIO port is probably big enough and the pins far enough apart to desolder successfully. If the chips on the donor are socketed, of course they can be reused. I don't know if I'd suggest desoldering the cartridge connector though (I'm with Mac on this). If the donor chips are soldered rather than socketed, whether you can reuse them depends entirely on how well you can remove them from their existing home without damaging them. It's not something I'd recommend for all 5 of the main 40-pin ICs on an Atari (6502C, PIA, POKEY, ANTIC and GTIA). That's a lot of pins of to remove cleanly without either damaging a chip leg or inadvertently overheating one of the chips and killing it. If you have a lot of experience I'm sure it CAN be done but it seems an unnecessary risk to me.

     

    Thanks, ill definitely heed this advice. :thumbsup: I know some are socketed, like the Antic, but some chips had been poached by the prior owner including the Sally and I think the Pokey from memory, I already used the GITA to repair my current XL , on a side note these missing IC's weren't detailed on the eBay sale :mad: Ill go with Mikes kit I think. :D

  10. Posted

    That is certainly your decision. If I might suggest, I would save up to buy the kit all at once as you will end up spending quite a bit more trying to buy the parts from multiple vendors. You will end up spending *quite* a bit more not to mention the time involved. I mean I am buying for multiple units at a time and it still involves a lot of leg work and packages and checking and double-checking and waiting.

     

    However, at the end of the day, it is always your decision. Feel free to PM me with what ever you wish to purchase.

     

    Thanks for the advice, I'll revisit in the new year, I have ordered the JOY2PIC and will start on this. I also need to take stock of the custom Atari chips and sockets I can use from a donor which should save me some money. Cheers!

  13. Posted

    Hi!

     

     

    You can look also to my FastBasic https://github.com/dmsc/fastbasic/blob/master/README.md, this is a complete editor+compiler (to an optimized byte-code) fast enough to just compile after each edit. You can download the ATR from https://github.com/dmsc/fastbasic/releases/download/v1/fastbasic-v1.atr

     

    The IDE can also compile to disk, writing a standard atari executable.

     

     

    Wow, will certainly check this out. Can I open Atari or Turbo Basic in it?

  15. Posted

    I had a question from a work colleague that I couldn't answer, he wanted to know how the BASIC interpreter compiles and executes the code, ie is it just in time or compiles it then executes. As theres no perceivable delay on RUN, I wasnt sure, i thought it tokenized it as you entered each line. Given memory and CPU limitations compiling separate code on RUN seemed wrong, but i have no idea.

  17. Posted

    Thanks that would be well received, I did find Parrot software that also shipped with a basic player, it states it will blank the screen while playing the sound which is not ideal.

     

     

    I have to transfer a disk to an ATR - should be done by the weekend..

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