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Installation problem PSD Express 866

LP
Associate II

‎2026-03-18 9:38 AM - last edited on ‎2026-03-18 12:01 PM by

Hi,

i am trying to install PSD express v 8.66 software tool on Windows 11 pro.

It is giving error.

Could you help me please how to download this tool on latest Windows OS as early as possible??

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5 REPLIES 5
Andrew Neil
Super User

‎2026-03-18 9:53 AM

Are you referring to the software for the uPSD devices, originally by Waferscale Integration, Inc ?

256kbit_16kbit_EPROM_SRAM_Wafer_Scale_Integration_PSD311_(3).jpg

Although WSI was acquired by ST in 2000, the parts are long discontinued

 

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
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LP
Associate II
In response to Andrew Neil

‎2026-03-18 9:58 AM

I want to use PSD Express tool to download firmware for 8051 microcontroller board.

I cannot install PSD Express on windows 11 pro

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Andrew Neil
Super User
In response to LP

‎2026-03-18 10:01 AM

As noted, both the software tools and the hardware products are long obsolete.

It's hardly surprising that 25-year-old software won't install on Windows 11 !

 

Where did you even find this stuff?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
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LP
Associate II
In response to Andrew Neil

‎2026-03-18 10:02 AM

I know. But still we are using that hardware. Please help me to install tool?

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Andrew Neil
Super User
In response to LP

‎2026-03-18 10:10 AM - edited ‎2026-03-19 3:07 AM

Sorry, can't help you there.

Your best bet is probably to find a copy of Windows-NT or whatever was supported by that ancient software.

You should probably also be thinking urgently about replacing that ancient part!

 

This guy found a commercial programmer with support, but even that is over 15 years ago now.

Maybe you can find something on ebay...?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.
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