Dreamcast GDEMU from Aliexpress + Amazon

Discussion in 'Other Consoles & Oldies' started by alexander1970, Mar 9, 2019.

  1. spectral

    spectral GBAtemp Fan

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    Yeah 3000 not 3010. I've took a pic. Will upload it in a min
     
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  2. alexander1970
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    alexander1970 GBAtemp allows me to be here

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    Congratulations:

    HKT-3000 - NTSC-J Dreamcast Initial Launch Version :D
     
  3. spectral

    spectral GBAtemp Fan

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    Is there any benefit to that? I'm assuming that makes it VA0 and not compatible with GDemu. Here's the pic of the label. It doesn't even say Sega.

    Dreamcast.
     
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  4. alexander1970
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    alexander1970 GBAtemp allows me to be here

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    Thank you,a very nice Dreamcast.:D

    No,you sadly do not can use a GDemu.

    You maybe look for a (unfortunately more expensive) USB GD Rom:

    http://3do-renovation.ru/USB-GDROM_Controller.htm

    or if you good in soldering and have "calm" hands:

    G1-ATA IDE Adaptor/Mod:

    https://fnhack.wordpress.com/2014/10/11/links-for-the-dreamcast-g1-ata-hdd-mod/

    http://www.dc-swat.ru/blog/hardware/874.html

    The SD-CARD Adaptor for the Seriel Port is ok but not the best solution (you need special made SD ISO´s):

    https://www.aliexpress.com/item/33038827324.html?spm=2114.search0604.3.15.17cad943BSnnDD&ws_ab_test=searchweb0_0,searchweb201602_6_10065_10068_10547_10546_319_10059_10884_10548_317_10887_10696_321_322_453_10084_454_10083_10103_10618_10304_10307_10820_537_536,searchweb201603_52,ppcSwitch_0&algo_expid=efbc29bc-6d7c-4e3a-89cc-c80b09a5da39-2&algo_pvid=efbc29bc-6d7c-4e3a-89cc-c80b09a5da39&transAbTest=ae803_5

    It is your choice.
    Thank you.:)
     
  5. spectral

    spectral GBAtemp Fan

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    I couldn't solder if my life depended on it. It looks like I'll be sticking to CD-R. Managed to get most of the games that needed it onto 99Min CD-R rather than the cut up 2-disc versions. Most of the time when I just want a quick mess with a game I just use Redream these days. Was more tempted by GDemu from wanting to mess with it than it actually being useful tbh. Is there any advantages to such an old model? I knew it has to be a fairly early one as I picked it up in cash generators for £100 sometime mid 1999.
     
    Last edited by spectral, Jul 19, 2019
  6. replicashooter

    replicashooter GBAtemp Advanced Fan

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    How is redream @spectral and what are you running it on?
     
  7. spectral

    spectral GBAtemp Fan

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    Seems really good, although only game I've recently played much of is Soul Calibur, but it seems to run pretty much perfectly. I am using it on my gaming PC though so while not top of the range, its pretty beefy for emulation. Its a 6700k@4.5Ghz, 16GB 3200Mhz DDR4, GTX 1070)
     
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  8. fixingmytoys

    fixingmytoys GBAtemp Advanced Fan

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    From what I can tell jap units don’t have the Circle with a number mine doesn’t and I’ve not come across any other Japanese units that have you can apparently tell from the serial number but it’s easier to open it up quickly and have a look
     
  9. subcon959

    subcon959 teh retro

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    Dec 24, 2008
    The stuff you see about 12V is to do with heat production after replacing the GDROM drive.

    The reason VA0 motherboards aren't compatible is that they have 5V at the connector whereas VA1 has 3.3V. The GDEMU is designed for 3.3V so it will burn out on the VA0.

    No idea why he didn't just add the extra circuitry to make it compatible with both.
     
  10. fixingmytoys

    fixingmytoys GBAtemp Advanced Fan

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    So if I cut the 5v trace ??
     
  11. alexander1970
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    alexander1970 GBAtemp allows me to be here

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    Hello. :)

    Today the french seller from Amazon confirms the refund of the full price + the shipping costs for the return of the broken GDemu.
    Great Service.:)

    No really Help/Support from Aliexpress only nice "pen pal" contact.....I have already written that off.
     
  12. osctheboss2000

    osctheboss2000 Newbie

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    yea m8 there sick
     
  13. coffinbirth

    coffinbirth GBAtemp Regular

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    Did you load or disable the 12v rail? Otherwise it will spike to 14v and can cause issues.
     
  14. fixingmytoys

    fixingmytoys GBAtemp Advanced Fan

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    What issues are they
     
  15. coffinbirth

    coffinbirth GBAtemp Regular

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    Well, it can damage your psu and potentially anything attached to it, which is what sounds like what happened here.
     
  16. subcon959

    subcon959 teh retro

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    I think this is one of those internet myths that people read and repeat but has never actually happened to anyone. Even the creator of GDEMU doesn't consider it an issue.
     
  17. coffinbirth

    coffinbirth GBAtemp Regular

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    Sigh, really?

    So...you think overheating a 20 year old psu for 8 hours straight(which is exactly what the op did) won't cause problems? In case you're not paying attention to this thread, op fried TWO gdemu boards already, the second only taking a short session to fry it.

    Anecdotally, mine used to get HOT, like caps might explode hot, and crash after a couple hours of play until I did the 12v fan mod and inserted front and back shrouds. No longer an issue.

    The 12v mod is recommended for a reason.
     
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  18. alexander1970
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    alexander1970 GBAtemp allows me to be here

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    The first one I think definitely.
    The second one I have no idea.I had a maximum of 20 minutes in operation.Only to see if all is ok,Then I powered theDreamcast down and put it away.After a few days I plug in and....thats it.:(
    I have feeling maybe it is only the Boot Rom/FW or something was broken.Because on the first GDemu the LED is flashing.
    But on the second the LED STAYS orange/red.As I say I do not know what happened.
     
  19. subcon959

    subcon959 teh retro

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    Dec 24, 2008
    Yes, really.
    Exactly. Anecdotally, I've not had a single thermal issue with either of mine in over a year of pretty hardcore use but that's not proof of anything either.

    BTW, apparently you're the one not paying attention to the thread since my previous advice to him was regarding the PSU being the culprit.
     
    Last edited by subcon959, Jul 27, 2019
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  20. alexander1970
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    alexander1970 GBAtemp allows me to be here

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    Hello.:)

    I decided to try it an third time BUT:

    https://retrogamesultra.com/2019/02/17/sega-dreamcast-gdemu-installation-and-setup/

    This time I will use this Advise and get 3x1Kohm 1/4W resistors in parallel.

    img_4356.
     
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