I tried to put a 4mb ram upgrade in my 520STE at the weekend but was confronted by SIPPs and no SIMM sockets! So I'm having to fully dismantle and desolder the SIPPs
I've bought 4 SIMM sockets from exxos but wanted to know if it matters which way round they go?
SIMM Sockets
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yars
- Posts: 8
- Joined: 02 Feb 2019 16:22
SIMM Sockets
Atari 520STE 4MB, Ultrasatan. Back in service as a MIDI sequencer.
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rubber_jonnie
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- Posts: 14890
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- Location: Essex
Re: SIMM Sockets
Chances are that the sockets are keyed and will only fit one way, but on my STEs the SIMMs insert pointing back and rock forward to lock in place.
If in doubt there are some decent pictures of STE mainboards to be found here: https://www.exxosforum.co.uk/forum/viewforum.php?f=51
If in doubt there are some decent pictures of STE mainboards to be found here: https://www.exxosforum.co.uk/forum/viewforum.php?f=51
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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yars
- Posts: 8
- Joined: 02 Feb 2019 16:22
Re: SIMM Sockets
Thanks, I'll take some photos of the board before I install the sockets.
Atari 520STE 4MB, Ultrasatan. Back in service as a MIDI sequencer.
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rubber_jonnie
- Site Admin

- Posts: 14890
- Joined: 17 Aug 2017 19:40
- Location: Essex
Re: SIMM Sockets
It'd be good if you could upload to the motherboard section, don't forget they can be full size there for detail.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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exxos
- Site Admin

- Posts: 28357
- Joined: 16 Aug 2017 23:19
- Location: UK
Re: SIMM Sockets
Yes you have to get them in the right way around.yars wrote: 04 Feb 2019 12:02 I've bought 4 SIMM sockets from exxos but wanted to know if it matters which way round they go?
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yars
- Posts: 8
- Joined: 02 Feb 2019 16:22
Re: SIMM Sockets
Finally got around the desoldering the SIPPs, took ages as I only had soldering Iron and sucker :cry:
I missed the postman so will collect the sockets at the weekend.
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Atari 520STE 4MB, Ultrasatan. Back in service as a MIDI sequencer.
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rubber_jonnie
- Site Admin

- Posts: 14890
- Joined: 17 Aug 2017 19:40
- Location: Essex
Re: SIMM Sockets
Nice neat job, well done.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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yars
- Posts: 8
- Joined: 02 Feb 2019 16:22
Re: SIMM Sockets
Back up and running, what a job that was. In time for the new ultrasatan! Backing up all my old Cubase song files from floppy disks. It's funny seeing all the hard drives on the desktop, that would have been a fantasy back in 1994.
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Atari 520STE 4MB, Ultrasatan. Back in service as a MIDI sequencer.
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