CDL has a piece of telecom hardware that has a failed clock chip (same part as may early computers) Failed chip is a DS14287. It's suggested replacement is a BQ4287MT-SB2. Both are NLA Rather than grind the chip open and piggyback a battery on it, has anyone built one of these https://github.com/necroware/nwX287 as a replacement? https://www.youtube.com/watch?v=svPNxILeQEw Martin
Martin, Glitchwrks actually sells them premade https://www.ebay.com/itm/274503108836?mkcid=16&mkevt=1&mkrid=711-127632-2357... The 12887 chip should be functionally identical to the 14287. However I would reach out just to be sure. I picked one of these up not too long ago to to fix a pentium board. I am going to be at the workshop and can bring the chip to test in your machine if you would like? I’ll be available Saturday and Sunday. Ian L. On Fri, Aug 26, 2022 at 7:29 AM Martin Flynn via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
CDL has a piece of telecom hardware that has a failed clock chip (same part as may early computers)
Failed chip is a DS14287. It's suggested replacement is a BQ4287MT-SB2. Both are NLA
Rather than grind the chip open and piggyback a battery on it, has anyone built one of these https://github.com/necroware/nwX287 as a replacement? https://www.youtube.com/watch?v=svPNxILeQEw
Martin
Let me know how it works out, we'll send a free one or design something compatible if it's for CDL! Thanks, Jonathan ------- Original Message ------- On Friday, August 26th, 2022 at 07:38, Ian Litchfield via vcf-midatlantic <vcf-midatlantic@lists.vcfed.org> wrote:
Martin,
Glitchwrks actually sells them premade
https://www.ebay.com/itm/274503108836?mkcid=16&mkevt=1&mkrid=711-127632-2357...
The 12887 chip should be functionally identical to the 14287. However I would reach out just to be sure.
I picked one of these up not too long ago to to fix a pentium board. I am going to be at the workshop and can bring the chip to test in your machine if you would like?
I’ll be available Saturday and Sunday.
Ian L.
On Fri, Aug 26, 2022 at 7:29 AM Martin Flynn via vcf-midatlantic < vcf-midatlantic@lists.vcfed.org> wrote:
CDL has a piece of telecom hardware that has a failed clock chip (same part as may early computers)
Failed chip is a DS14287. It's suggested replacement is a BQ4287MT-SB2. Both are NLA
Rather than grind the chip open and piggyback a battery on it, has anyone built one of these https://github.com/necroware/nwX287 as a replacement? https://www.youtube.com/watch?v=svPNxILeQEw
Martin
Jonathan (Glitch) has sells similar dallas products on tinder. I was hoping he had that one too but its not there https://www.tindie.com/stores/glitchwrks/ He'd know best if this or necroware would work. I think there's tricky issues- what the clock features are, what the computer uses of it that substitutes may or may not work. On 8/26/2022 7:28 AM, Martin Flynn via vcf-midatlantic wrote:
CDL has a piece of telecom hardware that has a failed clock chip (same part as may early computers)
Failed chip is a DS14287. It's suggested replacement is a BQ4287MT-SB2. Both are NLA
Rather than grind the chip open and piggyback a battery on it, has anyone built one of these https://github.com/necroware/nwX287 as a replacement? https://www.youtube.com/watch?v=svPNxILeQEw
Martin
participants (4)
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Douglas Crawford -
Ian Litchfield -
Jonathan Chapman -
Martin Flynn