Linked by Thom Holwerda on Mon 5th Feb 2018 23:08 UTC

In November last year I wrote about the forgotten and obscure feature of early Windows 95 builds that lets you run Windows 3.1 in a window on Windows 95. Since then I was wondering if this would still work on the final build (950) of Windows 95, considering so much has changed since build 58s.

I won't spoil it.

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RE[4]: Reminds me of OS/2 2.0
by Drumhellar on Fri 9th Feb 2018 18:34 UTC in reply to "RE[3]: Reminds me of OS/2 2.0"
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What makes an operating system an operating system rather then an application, especially in the (MS-)DOS days?

At the most basic, probably the interrupt handler. When an interrupt is generated by a piece of hardware, the OS is what handles it. When a piece of software generates an interrupt, it is to notify the OS that there is work to be done.

When Windows loads, it nukes the DOS interrupt handler and replaces it with its own. Windows (not DOS) handles both hardware and software interrupts. The hardware is interacting with Windows directly, not DOS.

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