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LP_it
Associate
Mar 18, 2026 4:38 PM UTC
Question

Installation problem PSD Express 866

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??

5 replies

Andrew Neil
Andrew Neil
Super User
Mar 18, 2026 4:53 PM UTC

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.
LP_itAuthor
Associate
Mar 18, 2026 4:58 PM UTC

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

I cannot install PSD Express on windows 11 pro

Andrew Neil
Andrew Neil
Super User
Mar 18, 2026 5:01 PM UTC

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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