What's first...?

discussion of games, software, hardware & emulators relating to the Acorn Atom
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stevebubs
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What's first...?

Post by stevebubs » Tue Mar 06, 2018 1:10 pm

Right,

30+ years since I last touched one of these but I finally managed to get my hands on an Atom (parents gave away ours in the 80s as it was languishing at the back of a cupboard in favour of the BBC).

What are the first things to do / check?

I'm guessing I need to start for
- Source a suitable power supply (no PSU provided and the Atom has a label on the back saying 5V DC regulated only)
- Check for any obvious damage inside.

anything else pre-power on?

What are the next steps to making sure it's up and running fine? Is there anything worth doing in terms of preventatage measures (replacing white sockets etc)

What about upgrades? Any recommended starting points to start loading something useful onto the box?

Cheers

Stephen

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martinw
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Re: What's first...?

Post by martinw » Tue Mar 06, 2018 1:34 pm

Post power on, CTRL-G "beeep" is very useful to see if the CPU is running ...

Martin

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oss003
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Re: What's first...?

Post by oss003 » Tue Mar 06, 2018 3:16 pm

Hi Stephen,

Indeed, first check the power supply, 5V (LK6+7 closed) or 8V (LK6+7 open).
If it's not working, try this: viewtopic.php?f=44&t=6318&p=60505&hilit ... ion#p60505

You can find some Atom expansions here: http://www.stardot.org.uk/forums/viewto ... cts#p86259

I would recommend an AtoMMC interface and Phill's RAM-ROM board.

Greetings
Kees
Last edited by oss003 on Tue Mar 06, 2018 3:19 pm, edited 4 times in total.

crj
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Re: What's first...?

Post by crj » Tue Mar 06, 2018 3:16 pm

2A USB power supplies are two a penny (OK, 1 for 200 pennies at Poundland). They're 5V regulated, and I get the impression they ought to be fine unless you load your Atom down with peripherals.

stevebubs
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Re: What's first...?

Post by stevebubs » Wed Mar 07, 2018 10:22 pm

Cheers, guys. Some really good links there... looking forward to getting it set up

herklots
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Re: What's first...?

Post by herklots » Fri Mar 09, 2018 11:00 pm

You might consider changing the electrolytics, but only if you are competent because the through hole pads are small. And don't use bead tantalums for replacement, just bog standard electrolytics.

Prime
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Re: What's first...?

Post by Prime » Sat Mar 10, 2018 3:21 am

crj wrote:2A USB power supplies are two a penny (OK, 1 for 200 pennies at Poundland). They're 5V regulated, and I get the impression they ought to be fine unless you load your Atom down with peripherals.
I'm not really sure about using £2 PSUs from poundland, too many stories of them being way sub-standard and catching fire, giving shocks etc.

Never *EVER* cheap out on PSUs (or anything else safety related).

Cheers.

Phill.

waltermixxx
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Re: What's first...?

Post by waltermixxx » Sat Mar 10, 2018 4:20 am

Do post pictures as you go.
The unit, the motherboard,
All the bits. We love to see them.

crj
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Re: What's first...?

Post by crj » Sat Mar 10, 2018 4:23 am

I fully appreciate the importance of quality in power supplies, for the safety of people, electronics and everything else nearby. I would never normally risk one that cheap.

However, big Clive (no relation) did a teardown video on the specific model I just recommended. He doesn't pull his punches, yet on this occasion he was very impressed. One component was in theory a little outside tolerance and another ran slightly too hot for his tastes, but those are minor gripes when the regulator, casework, air gaps, transformer double insulation, etc. are all good. And there's no fundamental need for a good PSU to cost more, so...

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