exxos blog - random goings on

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exxos
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Re: exxos blog - random goings on

Post by exxos »

I have un-forgotten about the DAC FIX PCB again. I designed a slightly smaller board a couple years ago but could not get then assembled as they were too small for JLC to do them :( But by some "miracle", They can assemble down to 10x10mm now :yay2: :dualthumbup:

So now the new board is in my basket awaiting production.

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I will see if I can a few of the Falcon FPU osc clock boards done next...
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: exxos blog - random goings on

Post by exxos »

FPU OC PCB done. JLC parts placement preview is out as normal.

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Going to have to take a few days off from stuff again because, as usual, the hurting hands thing :(
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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People should find solutions to problems, not find problems with solutions.
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Re: exxos blog - random goings on

Post by Badwolf »

exxos wrote: Tue Aug 02, 2022 2:11 pm FPU OC PCB done. JLC parts placement preview is out as normal.
Image
Dunno what you're on about -- looks exactly like the way I place 'em!

BW
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
DSTB1 Open source 16Mhz 68k and AltRAM accelerator for the ST
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
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Re: exxos blog - random goings on

Post by exxos »

Badwolf wrote: Tue Aug 02, 2022 2:50 pm Dunno what you're on about -- looks exactly like the way I place 'em!
:lol: :chairsmack:
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: exxos blog - random goings on

Post by exxos »

Scored this off evilbay. Did not really expect it to work though anyway. The listing was stated as for parts not working, so I guess that was a bit of a clue :lol: Currently just seems to be a crash screen generator :lol: I took the chips out and cleaned them up a bit as there is basically corrosion everywhere.

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Decided just to chuck it in the ultrasonic... Only did not quite fit in the basket :lol: :roll:

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I doubt this will cure the poorly thing. I just wanted to clean a motherboard to see what happened more than anything :lol:
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: exxos blog - random goings on

Post by exxos »

Holy mother of dirty motherboards Batman!

The text has vanished off half the chips as well :lol:

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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: exxos blog - random goings on

Post by exxos »

so first up, it seems to have some weird reset issue. Occasionally it would boot up..

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I found C100 is basically limiting the reset voltage to just 1 volt! so for a quick fix I just slapped another over the pull-up and to actually reset properly!

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The next problem is, it seems to be suffering from that "Shifter goes nuts" problem.

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On this machine it does not seem to matter which version of the video shifter is fitted.

In any case I managed to get it run long enough to run a pass of GB6.

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It is indeed a very poorly STE. With a lot of TLC I think it can be brought up to fully functional. Though I will probably used as a guinea pig for 16Mhz buffer tests when/if I get time.
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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Re: exxos blog - random goings on

Post by exxos »

How time flies..

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Re: exxos blog - random goings on

Post by exxos »

I was not at home yesterday so the STE is turned off the entire time. Anything I did just was to change the reset to solve the previous issue. And now with either version of shifter installed the video is perfectly fine again.


:WTF:


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https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
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