Ordering the Alpha board

All information relating to the Alpha plus all the WIP threads etc.
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Ordering the Alpha board

Post by exxos » Tue Jul 31, 2018 11:41 am

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Re: Ordering the Alpha board

Post by Cyprian » Tue Jul 31, 2018 12:09 pm

I would buy one but I have no electronic skills
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Re: Ordering the Alpha board

Post by Atarian Computing » Tue Jul 31, 2018 12:11 pm

Do we source components from donors? As in the special chips?
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Re: Ordering the Alpha board

Post by rubber_jonnie » Tue Jul 31, 2018 12:22 pm

Atarian Computing wrote: ↑
Tue Jul 31, 2018 12:11 pm
 Do we source components from donors? As in the special chips?
Yeah, you're going to need a donor board of some sort.
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Re: Ordering the Alpha board

Post by Atarian Computing » Tue Jul 31, 2018 12:24 pm

rubber_jonnie wrote: ↑
Tue Jul 31, 2018 12:22 pm
Atarian Computing wrote: ↑
Tue Jul 31, 2018 12:11 pm
 Do we source components from donors? As in the special chips?
Yeah, pretty sure you're going to need a donor board of some sort.
No worries, got several. And some NOS chips.
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Re: Ordering the Alpha board

Post by rubber_jonnie » Tue Jul 31, 2018 12:32 pm

Atarian Computing wrote: ↑
Tue Jul 31, 2018 12:24 pm
 No worries, got several. And some NOS chips.
Likewise. I have one board in particular in mind, which will donate it's body for science :)
Collector of old Atari things:
800XL + Ultimate 1MB, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k +APE Warp) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg), 1040STF long button floppy, 2x 1040 STFMs + Gotek, 2x 4160STE with 32Mhz booster, ROM switcher, Mega ST1, Mega ST4, not to mention various bare ST boards for testing including a PAK 68/2 :)
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Amiga stuff, Mac stuff, Sinclair stuff etc...
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Re: Ordering the Alpha board

Post by Atarian Computing » Tue Jul 31, 2018 12:39 pm

exxos wrote: ↑
Tue Jul 31, 2018 11:41 am
 Snip
Do you have a BOM readily available perhaps?
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Re: Ordering the Alpha board

Post by exxos » Tue Jul 31, 2018 12:49 pm

I have a BOM, not checked all parts yet, but will upload it at a later date.

Will need a donor ST for man parts such as , MMU, GLUE, Shifter etc, other parts like MFP, 1772, I do stock in my store, but a whole spare donor ST will have all parts.

The circuit isn't identical, example needs a Falcon RAM card (1MB or 4MB), PLCC 68000..

Other parts are generic resistors and capacitors etc which should be easy to obtain from any half decent supplier.
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Re: Ordering the Alpha board

Post by rubber_jonnie » Tue Jul 31, 2018 12:53 pm

Hmm, so I guess I'm seeing SMD type PLCC sockets on the board?

If so then I'm going to have to get some sort of hot air soldering practise in, since I don't have an oven!!

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Collector of old Atari things:
800XL + Ultimate 1MB, 2x 1010 cassette, 1050 + Happy mod, 65XE (128k +APE Warp) & XC12, SIO2SD, 2600jr, 7800 and Lynx II
Atari 520ST (1Meg), 1040STF long button floppy, 2x 1040 STFMs + Gotek, 2x 4160STE with 32Mhz booster, ROM switcher, Mega ST1, Mega ST4, not to mention various bare ST boards for testing including a PAK 68/2 :)
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Re: Ordering the Alpha board

Post by exxos » Tue Jul 31, 2018 1:07 pm

rubber_jonnie wrote: ↑
Tue Jul 31, 2018 12:53 pm
 Hmm, so I guess I'm seeing SMD type PLCC sockets on the board?
???

Normal PLCC sockets (not funky ones either, just normal PLCC sockets).
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