STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Help & information about the STE V1 series boosters.
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HigashiJun
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by HigashiJun »

You have only two grounds on the CPU (pins 16 & 17)...
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exxos
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by exxos »

philbo34 wrote: Fri Feb 12, 2021 1:19 pm Prob a daft question but should each header pin not have connection to the next or are there grounds next to each other. I fear not. Time to resolder I fear
Only VCC and GND

Capture.PNG
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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 ~
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philbo34
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by philbo34 »

Cheers that halved it
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HigashiJun
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by HigashiJun »

HigashiJun wrote: Fri Feb 12, 2021 1:22 pm You have only two grounds on the CPU (pins 16 & 17)...
Oops...

Forgot pins 56 & 57...

My bad !

:oops:
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HigashiJun
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by HigashiJun »

Ok, so Exxos' new plug-in beta booster now sits in the CPU socket:

Booster.jpeg
Booster.jpeg (334.05 KiB) Viewed 3482 times

And guess what ?

My STE boots flawlessly and even from Ultrasatan:

STE.jpeg
STE.jpeg (440.74 KiB) Viewed 3482 times

As for now, I did not revert to originals SILs and still have the 2.2 K ones soldered in.

No need either to use the 22uf capacitor in case the machine refuses to boot.

I will try to check if the floppy works.

Just funny to see that Sysinfo reports the CPU speed as 10 Mhz...

:D
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HigashiJun
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by HigashiJun »

sporniket wrote: Sat Feb 13, 2021 10:51 amgood work :)
Thanks !

This one was a lot easier than my previous booster attempt...

:D
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exxos
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by exxos »

HigashiJun wrote: Sat Feb 13, 2021 10:30 am As for now, I did not revert to originals SILs and still have the 2.2 K ones soldered in.
You should remove the MB ones as you will have 1.1K pullups in total , I found that can cause DMA issues on some machines.
HigashiJun wrote: Sat Feb 13, 2021 10:30 am No need either to use the 22uf capacitor in case the machine refuses to boot.
You still need it, or recap the reset circuit...

HigashiJun wrote: Sat Feb 13, 2021 10:30 am Just funny to see that Sysinfo reports the CPU speed as 10 Mhz...
Not surprised, effective speed, like 20% I guess overall. But ROM will work at much higher speeds, so desktop and apps will fly!


:bravo: :goodpost:
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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DoG
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by DoG »

HigashiJun wrote: Sat Feb 13, 2021 10:30 am...Just funny to see that Sysinfo reports the CPU speed as 10 Mhz...
Sysinfo don't display correct CPU speed. I don't know how it calculated it. It always seems off if you have an accelerator running.
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HigashiJun
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Re: STE 32MHz PLUG IN BOOSTER (again) 2021 variation

Post by HigashiJun »

And, to conclude this day of hard labour:

FDD.jpeg
FDD.jpeg (355.95 KiB) Viewed 3468 times

This old good floppy also works...

I will have to try some transfers between FDD and Ultrasatan to check if everything is alright and if there is no any data corruption, then launch Gembench...

But it will be for another day.

Stay tuned.
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