Coprocessor and GAL for Mega STe.

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Atarieterno
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Coprocessor and GAL for Mega STe.

Post by Atarieterno »

Does anyone to sell the coprocessor and GAL for the Mega STe?
Greetings.
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Rustynutt
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Re: Coprocessor and GAL for Mega STe.

Post by Rustynutt »

Picked mine up from Best Electronics.
But....tried to bench mark the FPU and only got errors. I purchased an 882, never tried the 881. Those you'll find fairly inexpensive on fleebay, Brad has the GALS.

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troed
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Re: Coprocessor and GAL for Mega STe.

Post by troed »

Rustynutt wrote:Picked mine up from Best Electronics.
But....tried to bench mark the FPU and only got errors. I purchased an 882, never tried the 881. Those you'll find fairly inexpensive on fleebay, Brad has the GALS.
Some motherboard revisions you might need to patch the bottom side of the motherboard.

https://blog.troed.se/2016/07/14/mega-s ... -upgrades/

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Re: Coprocessor and GAL for Mega STe.

Post by Moulinaie »

I also made some photos of my installation:

http://gtello.pagesperso-orange.fr/mste_e.htm#fpu

Guillaume.

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Atarieterno
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Re: Coprocessor and GAL for Mega STe.

Post by Atarieterno »

Thanks to all for your answers.

José Antonio.
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Re: Coprocessor and GAL for Mega STe.

Post by Rustynutt »

Yes, there is a small modification on the bottom, the unit I had wasn't necessary. Of course, could have missed something :)

However, I only used "FPU Bench" and FPU accuracy programs, not the one you wrote (thank you :) ) in Fourth.

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Re: Coprocessor and GAL for Mega STe.

Post by Atarieterno »

My Mega STe has a jumper next to the coprocessor socket, I think I do not need any modification except removing the jumper and inserting the two chips.
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Atarieterno
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Re: Coprocessor and GAL for Mega STe.

Post by Atarieterno »

Another small goal accomplished.

Image

Image

Image
What is "Float Math"?
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frank.lukas
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Re: Coprocessor and GAL for Mega STe.

Post by frank.lukas »

Atarieterno wrote: What is "Float Math"?
It is the FPU Test ...
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Re: Coprocessor and GAL for Mega STe.

Post by Atarieterno »

frank.lukas wrote: It is the FPU Test ...


I assume incompatible with this version of GEMbench.
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Re: Coprocessor and GAL for Mega STe.

Post by frank.lukas »

Use GEMBench 4.03 ...
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Re: Coprocessor and GAL for Mega STe.

Post by Atarieterno »

frank.lukas wrote:Use GEMBench 4.03 ...
Thank you.
I will do it.
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Re: Coprocessor and GAL for Mega STe.

Post by vattari »

I noticed that the FPU is recognised differently in my Falcon and TT, compared to the FPU in my Mega STE in GemBench (from memory, it doesn't "I/O Mapped FPU").
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Re: Coprocessor and GAL for Mega STe.

Post by Gaiyan »

vattari wrote:I noticed that the FPU is recognised differently in my Falcon and TT, compared to the FPU in my Mega STE in GemBench (from memory, it doesn't "I/O Mapped FPU").
I'm not sure but could it be because it's a 68881 instead of 68882 as on the TT?
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Re: Coprocessor and GAL for Mega STe.

Post by frank.lukas »

With a MC68881 FPU in a Mega STE or Mega ST the FPU Test with GEMBench 4.03 is fine ...
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Re: Coprocessor and GAL for Mega STe.

Post by Xevious »

The links to the GALS for the co-processor are dead, doe anyone have the files (or a link)?

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Re: Coprocessor and GAL for Mega STe.

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