A little bit of 8 Bit: 65XE upgrade to 128k RAM

Any 8bit repairs, images, cool things, upgrades etc.
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rubber_jonnie
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Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Post by rubber_jonnie » Wed Dec 23, 2020 4:20 pm

With regards to the sockets, @tzok is correct.

If you look at the sockets, one end has a notch in it, and the silk screen on the Atari has the same notch marked:

Silk screen:

notch.JPG
notch.JPG (14.21 KiB) Viewed 167 times

Socket:

socket.jpg
socket.jpg (8.95 KiB) Viewed 167 times

And the orientation is specific, as the notch shows where the notch of the IC goes, or pin 1 (in yellow) if there is no notch in the IC, as some just have a dimple to show where pin 1 is.

It's important to line these up correctly in order to make sure your chips are plugged in correctly and don't get killed when you switch on. It is important to understand these things to make sure you don't make any mistakes when plugging chips in. It's all there to help you.

Also, it shows a level of diligence that you have understood the reasons why it should be that way round, and taken the time and effort to make sure it all looks right.

In your case at least 2 of the sockets don't have the socket notch lined up with the silkscreen notch.
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 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
www.electronicnothingness.co.uk

Trollbra
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Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Post by Trollbra » Wed Dec 23, 2020 10:29 pm

That's right, I've always been careful to put the RAM chips in the right way !

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Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Post by Trollbra » Mon Dec 28, 2020 11:13 pm

Why do you think SIO Drive Max load fail (boot error) ?

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Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Post by rubber_jonnie » Tue Dec 29, 2020 12:22 am

I always let the SIO Max boot from the internal ATR that brings up the on screen menu, never fails that way. If you choose from the touch screen, it'll forget which ATR you chose if you power off and cause a boot error.

I think you need to use external power to remember the last ATR loaded when you power off the Atari.
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 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
www.electronicnothingness.co.uk

Trollbra
Posts: 17
Joined: Fri Dec 18, 2020 9:31 pm

Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Post by Trollbra » Wed Dec 30, 2020 4:47 pm

But SIO Drive Max doesn't work only with this motherboard !?

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Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

Post by rubber_jonnie » Wed Dec 30, 2020 5:27 pm

Trollbra wrote:
Wed Dec 30, 2020 4:47 pm
But SIO Drive Max doesn't work only with this motherboard !?
If it's just with this machine then you may have a problem with your Pokey.
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 :)
Plus the rest..
Amiga stuff, Mac stuff, Sinclair stuff etc...
www.electronicnothingness.co.uk

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