I'm looking for an 8087 Maths CoPro as all the ones I can find on eBay seem to be Chineseum and possibly fake.
If anybody has one spare, please let me know. The CPU is an NEC V20 as that may make a difference...
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WANTED - 8087 Maths CoPro
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rubber_jonnie
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WANTED - 8087 Maths CoPro
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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HigashiJun
- Posts: 2388
- Joined: 19 Jun 2020 07:21
- Location: Tokyo
Re: WANTED - 8087 Maths CoPro
I have no spares, but I can get you this one if you're interested:rubber_jonnie wrote: 16 May 2024 15:57 I'm looking for an 8087 Maths CoPro as all the ones I can find on eBay seem to be Chineseum and possibly fake.
If anybody has one spare, please let me know. The CPU is an NEC V20 as that may make a difference...
https://page.auctions.yahoo.co.jp/jp/au ... 1136333175
Just let me know.
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rubber_jonnie
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- Posts: 15022
- Joined: 17 Aug 2017 19:40
- Location: Essex
Re: WANTED - 8087 Maths CoPro
Unfortunately I can't see that here in the UK, are you able to share the price please?HigashiJun wrote: 17 May 2024 01:40I have no spares, but I can get you this one if you're interested:rubber_jonnie wrote: 16 May 2024 15:57 I'm looking for an 8087 Maths CoPro as all the ones I can find on eBay seem to be Chineseum and possibly fake.
If anybody has one spare, please let me know. The CPU is an NEC V20 as that may make a difference...
https://page.auctions.yahoo.co.jp/jp/au ... 1136333175
Just let me know.
Thanks
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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stephen_usher
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Re: WANTED - 8087 Maths CoPro
There's this eBay listing: https://www.ebay.co.uk/itm/324901073436 ... R9Cl1N3wYw
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
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rubber_jonnie
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- Posts: 15022
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- Location: Essex
Re: WANTED - 8087 Maths CoPro
Thanks, I had seen that one and other similar ones, I just feel the price is a bit steep, but I'll keep my eyes open.stephen_usher wrote: 17 May 2024 10:24 There's this eBay listing: https://www.ebay.co.uk/itm/324901073436 ... R9Cl1N3wYw
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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HigashiJun
- Posts: 2388
- Joined: 19 Jun 2020 07:21
- Location: Tokyo
Re: WANTED - 8087 Maths CoPro
@rubber_jonnie
Yes, the price is £34, with delivery included in Japan.
Yes, the price is £34, with delivery included in Japan.
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rubber_jonnie
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- Location: Essex
Re: WANTED - 8087 Maths CoPro
Thanks. Similarly to the one @stephen_usher pointed out on eBay, the price is a bit high, and if that only includes delivery in Japan, it could get expensive to get it to the UK.HigashiJun wrote: 17 May 2024 12:14 @rubber_jonnie
Yes, the price is £34, with delivery included in Japan.
8087.png
8087bottom.png
Am I just being too sensitive to price? It seems a lot really when you compare prices with similarly old ICs.
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...
-
stephen_usher
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- Posts: 7444
- Joined: 13 Nov 2017 19:19
- Location: Oxford, UK.
Re: WANTED - 8087 Maths CoPro
You would have thought that they would be more plentiful and hence cheaper, but obviously not. Maybe most of the XT class machines never had one fitted and hence few have gone into the reused circulation.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
-
HigashiJun
- Posts: 2388
- Joined: 19 Jun 2020 07:21
- Location: Tokyo
Re: WANTED - 8087 Maths CoPro
@rubber_jonnie
@stephen_usher
I would say it is a reasonable price for this quite rare FPU.
@stephen_usher
I would say it is a reasonable price for this quite rare FPU.
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rubber_jonnie
- Site Admin

- Posts: 15022
- Joined: 17 Aug 2017 19:40
- Location: Essex
Re: WANTED - 8087 Maths CoPro
@stephen_usher
@HigashiJun
I think probably you're both right and if I want one I will have to swallow the cost. Better have a think about how much I really want one...
@HigashiJun
I think probably you're both right and if I want one I will have to swallow the cost. Better have a think about how much I really want one...
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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