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Graphics. Managers wanted "windowing systems" as well as multitasking. People who just wanted mutitasking DOS had DesqView and ... "concurrent"? was it? i forg
by h2odragon 3y ago
Graphics. Managers wanted "windowing systems" as well as multitasking.
People who just wanted mutitasking DOS had DesqView and ... "concurrent"? was it? i forget.
I wrote TSR's that snatched cycles off the timer interrupt and rode 21h for opportunity to flush buffers to/from disk.
- esafak 3y agohttps://en.wikipedia.org/wiki/Multiuser_DOS https://en.wikipedia.org/wiki/Multiuser_DOS
- brightsize 3y ago> I wrote TSR's that snatched cycles off the timer interrupt We've all been there. How else could you get anything interesting done back in the day?
- cout 3y agoFor a long time I figured that was just the right way to do multitasking. Hook the interrupt and pass control to the next task when you are done. I also figured most of what I wanted was popup TSRs anyway - how can a human possibly pay attention to more than one program at a time? Makes me wonder how much my brain has changed over the years by being exposed to a multitasking and multiple windows on a large screen.
- cout 3y agoThere was a Concurrent DOS, and there were quite a few others: topview, taskview, doubledos, vm/386, to name a few. I remember reading this article (p. 22) sparking my imagination as a kid: http://bitsavers.trailing-edge.com/magazines/Microsystems_Journal/v03n02.pdf http://bitsavers.trailing-edge.com/magazines/Microsystems_Jo...