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Re: GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA)

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Kevin Bowling <kevin.bowling@kev009.com> wrote:
> Could it be directly CPU bus attached?  I would guess it would show up 
> in a particular way if it was ISA attached.

I have guessed that it was, but I haven't touched a PS/2 E in the flesh
since the late 1990s.

"Spiritually" I suspect it derives a lot from the Model 35 SLC design,
which had a 84F7985 IBM SVGA which looks to be attached to a local bus.
The PS/2 E was positioned to be "premium", hence why it had the faster
XGA-2 versus the cheap SVGA chipset.

(Didn't some Mod. 30s and Mod. 45s use the same planar as the PS/2 E?)

> > With that said, this project probably isn't too relevant to the PS/2 E
> > since it managed to be a lot faster than a typical 386SX and in
> > particular has a much more capable video system. It's actually a bit of
> > a genius design - the only thing slow are peripherals that are dog-slow
> > anyway, like the IBM 54G0135 drive, spinning just over 3,600 RPM and
> > running at about 1MB/sec.
> > 
> > Stacked up next to an MCA bus ThinkPad 720, the PS/2 E's video system
> > performed substantially better than the 720's MCA-attached WD video
> > chip... the same cannot be said for the ESDI drive in the ThinkPad 720,
> > probably because that drive could actually do DMA.
> > 
> > Incidentally the PS/2 E was a tragedy when they were being liquidated at
> > Best Buy... 4MB machines with 1MB spent on the video subsystem, booting
> > OS/2, and just swapping like crazy to a laptop-speed drive doing
> > programmed I/O. A 71F7010 4MB upgrade made the thing actually usable.

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GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA) Louis Ohland <ohland@charter.net> - 2026-07-30 06:58 -0500
  Re: GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA) Louis Ohland <ohland@charter.net> - 2026-07-30 07:05 -0500
    Re: GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA) "Josh Rodd" <joshua.at.rodd.dot.us@rodd.us> - 2026-07-30 18:08 +0000
    Re: GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA) "Josh Rodd" <joshua.at.rodd.dot.us@rodd.us> - 2026-07-30 18:09 +0000
      Re: GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA) Kevin Bowling <kevin.bowling@kev009.com> - 2026-07-30 15:42 -0700
        Re: GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA) "Josh Rodd" <joshua.at.rodd.dot.us@rodd.us> - 2026-08-02 23:55 +0000
          9545 Re: GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA) Louis Ohland <ohland@charter.net> - 2026-08-02 20:28 -0500
            Re: 9545 Re: GALAXEUS: New DOS / Bare-Metal Arcade Engine gives solid 78Hz/78 FPS on a 386(sx) CPU (Hi-Res 544x480 on slow 8-Bit ISA Std. VGA) "Josh Rodd" <joshua.at.rodd.dot.us@rodd.us> - 2026-08-08 03:18 +0000

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