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flashjazzcat

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Posts posted by flashjazzcat

  2. Posted

    50 minutes ago, ivop said:

    Keep in mind that H: devices are simulated ATR disk images.

    Surely 'H:' is a CIO device handler (hooked into the emulated machine). The virtual disk feature of Altirra works at the SIO (block IO) level, in the other hand, and bypasses the limitations of many DOSes with regard to 'H:'.

    • Like 1

  3. Posted

    4 hours ago, Mazzspeed said:

    In relation to retrobrighting the white parts of the casing, what do people do with the badge? Is there a way to remove it without mangling it, or do you just mask it up somehow? I'm open to advice, as I know that the Amiga 4000 case badges used to get stripped of all color if the casing was retrobrighted with the badge attached and uncovered.

    Mask it up unless it needs removing (if it's bent or falling off, etc); if it needs to be removed, use a hair dryer or hot air station to very carefully heat up the metal without melting the surrounding plastic, and slide a scalpel blade under the badge at the shallowest possible angle, cutting through the adhesive along the length of the badge. You want it to come off flat, because if it gets kinked, said kinks ain't coming out.

     

    I have to wonder if this case needs Peroxide treatment at all, though, although the naked eye is always more honest than a photograph.

     

  4. Posted

    9 hours ago, danwinslow said:

    Do they actually have laws against 'being an asshole'? I wonder how that gets defined, exactly, and also if that applies to posting rights on boards...hmm.

    Yes. Come to the UK, and Scotland in particular, where you can now be locked up for being an asshole online. True story.

    • Like 1
    • Thanks 2
    • Haha 1

  5. Posted · Edited by flashjazzcat

    For interest, this is an example of the the batch file I ended up using to launch my different Altirra setups: 

    @echo off
start "Altirra" /B "C:\Program Files\Altirra\Altirra64" /debug /portablealt:c:\users\jon\altirra\altirra_u1mb_SIDE3.ini

    I wanted to get rid of the command window when starting each instance of the emulator, and after some Googling I figured out that the 'start' command with the '/b' switch accomplishes this. So I now have a bunch of different machine profiles (shortcuts to batch files) pinned to the taskbar, each with the Altirra icon. They all load up with their own U1MB firmware, NVRAM, etc, and with the debugger open. Absolute bliss. Should have set this up years ago. :)

    • Like 3

  7. Posted

    1 minute ago, kheller2 said:

    Several of the original 600XL mods used the PBI to pickup the lines needed for the RAM addressing.  Unlike my somewhat attractive mod.

    Strange. The vias are far closer, but if the instructions described things that way, that certainly explains it.

  8. Posted · Edited by flashjazzcat
    typo

    23 minutes ago, x=usr(1536) said:

    I do still have the original mylar, so conceivably could go back to it.  The adhesive was absolutely shot, though - it peeled off with near-zero resistance.  That might make things interesting (but not impossible) to replace.

    No adhesive is needed and I'm not sure why they put it on there in the first place. As long as the carbon fingers (or repainted contacts if the carbon is history) are clamped against the gold contacts, it'll work. I had to put a piece of electrician tape over the back of the Mylar after repainting the traces on the last one I fixed, though, since the plastic was a little wrinkled. Works perfectly now, though.

    • Like 1

  12. Posted

    23 minutes ago, Jacques said:

    Can it be because of older .jed (v2, I guess, since there is SIDE Hardware)?

    No: that should pose no problem at all, since the GOS is using the exact same banking scheme as the built-in SDX ROM.

     

    Make sure you have some extended RAM enabled, though; I'm not sure if the GOS will fail gracefully if it fails to find at least 64K of extended memory.

    • Thanks 1

  14. Posted

    2 hours ago, Jacques said:

    I'm only getting some garbage on screen after attempt to boot to GOS. Any hint, please?

    How do you go about installing this? Did you just flash the 512K 'ULTIMATE.ROM' file, obliterating everything else on the flash chip, or did you do something else?

    2 hours ago, Jacques said:

    nd by the way, is "smaller" SDX in GOS firmware missing some of the stuff?

    Probably 'man' files; I don't find them much of a loss, but YMMV.

  15. Posted · Edited by flashjazzcat

    13 hours ago, Mark2008 said:

     

    And also, I was wondering why typing CAR results in "Not Present"?   I may be misunderstanding something, but the u1mb indicates it has 4 cartridges, on a real Atari, I'm pretty sure typing car would take me to the selected cartridge in the u1mb settings.  In my case, basic.

    It would not. The '4 cartrirges' you speak of are four Internal BASIC slots, accessed by typing 'BASIC' at the SDX prompt. Nothing at all on the U1MB implements an external cartridge (the SDX 'cartridge' itself being considered the 'internal' cartridge ROM).

    13 hours ago, Mark2008 said:

    If I could get Mac/65 running as a cartridge, I'd be doing pretty good, imho.

    You would indeed. It's possible to run a patched version of MAC/65 on a SIDE2 cartridge, however, and of course on SIDE3. Both will run from SDX with the 'CAR' command.

  16. Posted

    30 minutes ago, BillC said:

    OK, I jumped to conclusions about this being another change implemented by Lotharek.

    The IDC adapter (like the right angle pin headers) represented dark days better forgotten. I used to manufacture new cables with the proper transitional connectors as a matter of course. :)

    • Like 1

  17. Posted · Edited by flashjazzcat

    What's the best way to manage multiple INI file configurations? The idea was to have multiple Altirra.ini files in different folders so that I could overcome the inability of registry-based profiles to switch firmware and NVRAM along with everything else when changing from one profile to another (this is becoming rather cumbersome when I'm preparing firmware for release on multiple different build targets). So: I started Altirra with the /portable switch expecting it to dump an INI file in the working directory or the program files directory, but it did neither. I eventually figured out that it was trying to put the INI file in the folder containing the executable (i.e. Program Files) but needed admin privileges to do so.

     

    But I'm still not sure how I switch between different INI files. Does the INI file have to be in the same folder as the emulator executable? This would mean I'd have to put copies of the EXE as well as the INI files in the different 'profile' folders. I can see why it would work this way, but being able to specify the INI file path is really what I was looking for.

     

    EDIT: I guess what I need here is /portablealt:<file>. Ahhh... :)

     

    Yes - that appears to have worked. Sorry for noise.

  21. Posted

    9 minutes ago, BillC said:

    They can be on the Atari PCB, an adapter in the MMU socket, or in the MMU connection cable, otherwise the Xilinx PLD will be damaged.

    Good call, although it was a handful of cartridges which managed to send 5V over RD4/RD5 which would blow the CPLD (which was supposed to be 5V tolerant, until it turned out it wasn't). Definitely not worth the risk, though, so the mod should always be done.

     

    • Like 2

  22. Posted

    12 minutes ago, Jacques said:

    And IF the SIDE Hardware is there and I can update to new firmware, would there be any benefit of programming Xilinx jed v3? 

    Yes: there was a bug in v2 which made only the first internal BASIC slot usable. Version 3 fixes that.

    12 minutes ago, Jacques said:

    Should I also replace that AMIC chip with better one you earlier advised? 

    You could do, since I found the AMICs to be short-lived. All the AMICs in my boards died and have been replaced by SST 39SF040s. UFLASH will support the AMIC chips just fine, though.

    • Thanks 1

  24. Posted

    Well, I'm not criticising AVG, to be clear: it has the (optional) SIO-based ATR handling which makes it an excellent stand-alone solution without U1MB in the picture, but if you already have U1MB and aim to use the cart in that machine, SIDE3 allows simultaneous cart/ATR/HDD partition mounting all from the same menu.

     

    You will need to shave down the sides of the cart shell to fit it in a 1200XL though. :) The same is true of the original black AVG shell, although there are alternative shells for that one which apparently do fit.

    • Like 1
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