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Re: Acorn Atom Replica build
Posted: 22 Feb 2026 17:04
by PhilC
rubber_jonnie wrote: 22 Feb 2026 17:01
PhilC wrote: 22 Feb 2026 16:32
Looking good Jon. Hope those other bits have come in handy too.
I haven't done anything with the video board yet but I've used all of the RAM and logic ICs you sent :)
On question though, with Regards to the ROMs (You sent me two but I've not tried to read them yet) do you know what images are available for the 27C512's that this board uses?
I don't be honest, so you'll probably need to do a bit of googling? Hopefully you can use it for a few extra Atom roms? The two I sent were the standard roms I believe, ie OS and Basic.
Re: Acorn Atom Replica build
Posted: 22 Feb 2026 17:16
by rubber_jonnie
PhilC wrote: 22 Feb 2026 17:04
rubber_jonnie wrote: 22 Feb 2026 17:01
I haven't done anything with the video board yet but I've used all of the RAM and logic ICs you sent :)
On question though, with Regards to the ROMs (You sent me two but I've not tried to read them yet) do you know what images are available for the 27C512's that this board uses?
I don't be honest, so you'll probably need to do a bit of googling? Hopefully you can use it for a few extra Atom roms? The two I sent were the standard roms I believe, ie OS and Basic.
Cool thanks, I'll do some digging. My TL866 doesn't like either ROM so I think I'll have to pull out my older DOS based programmer to see if I can read them.
I may ask over at Stardot, I'm sure somebody over there can help.
Re: Acorn Atom Replica build
Posted: 27 Feb 2026 13:18
by rubber_jonnie
OK, so more parts arrived today, but not enough to complete the Atom.
Amongst them was this:
IMG20260227130956.jpg
And if that isn't period correct I don't know what is, though I may feel guilty about opening it up sinxce it survived so long.
Re: Acorn Atom Replica build
Posted: 27 Feb 2026 13:31
by mrbombermillzy
Wow!
Like you say, you almost dont want to open that pristine packaging with so much history!
At least you can be sure its not a fake. :lol:
Re: Acorn Atom Replica build
Posted: 27 Feb 2026 13:37
by rubber_jonnie
mrbombermillzy wrote: 27 Feb 2026 13:31
Wow!
Like you say, you almost dont want to open that pristine packaging with so much history!
At least you can be sure its not a fake. :lol:
Yeah, I'm pretty confident it isn't :)
Re: Acorn Atom Replica build
Posted: 27 Feb 2026 14:46
by exxos
rubber_jonnie wrote: 27 Feb 2026 13:18
OK, so more parts arrived today, but not enough to complete the Atom.
And if that isn't period correct I don't know what is, though I may feel guilty about opening it up sinxce it survived so long.
Wow, that was some slow postage ! :lol: :hide:
Re: Acorn Atom Replica build
Posted: 27 Feb 2026 15:33
by PhilC
Wonder if it's still under warranty? :lol:
Re: Acorn Atom Replica build
Posted: 27 Feb 2026 15:33
by rubber_jonnie
exxos wrote: 27 Feb 2026 14:46
rubber_jonnie wrote: 27 Feb 2026 13:18
OK, so more parts arrived today, but not enough to complete the Atom.
And if that isn't period correct I don't know what is, though I may feel guilty about opening it up sinxce it survived so long.
Wow, that was some slow postage ! :lol: :hide:
:lol:
Re: Acorn Atom Replica build
Posted: 28 Feb 2026 17:10
by rubber_jonnie
A few more parts fitted today, just waiting on the 6847, and some assorted logic ICs and then assembly is complete. I now have a ROM image as well, so I'll be able to give that a whirl and see what's what :)
Re: Acorn Atom Replica build
Posted: 02 Mar 2026 11:37
by rubber_jonnie
So very nearly at the point I could do a test:
IMG20260302113158.jpg
All I'm waiting on at the moment are the 6847 display chip and a 7445 logic IC. I'm hoping that it'll be built enough to test this week and then I can look at sorting out any missing connectors.