foone

foone, 11 months ago

currently getting 2015 beta installers from archive.org

foone, 11 months ago

ah-ha! The legacy installer is still on the site, but they don't seem to link to it anymore
https://developer.oculus.com/downloads/package/oculus-runtime-for-windows/

foone, 11 months ago

now I just need to find any software that'll still work on an Oculus DK1

foone, 11 months ago

The last interesting thing about the top of the PCB is that there's another speaker, labeled SP1.
There's two stereo speakers as well, so I suspect this is just used for PC Speaker, and was easier than merging the audio in with those other speakers

foone, 11 months ago

So here's another blurry navigation-picture for the other side of the PCB. The interesting thing here is that they've got the keyboard on a separate PCB.

foone, 11 months ago

So over by the USB port, we've got a CH375B.
This is an 8-bit IO chip for USB, specifically for storage.
(it's also an 8051-based core! there's always an 8051)

foone, 11 months ago

There's three 74HC139s, which are dual 2-to-4 line decoders.

This maybe is used for wiring up one of the expansion ports to the ISA bus?

foone, 11 months ago

A YAC512-M. This is a DAC used by the OPL3 to create the analog output of the audio chip.

foone, 11 months ago

A PAM8403 three-watt class-D stereo audio amplifier.

foone, 11 months ago

Assorted power regulation/charging circuitry that I'm not going to go into.

foone, 11 months ago

though I do want to show off this amazing bodge job.

foone, 11 months ago

So the keyboard PCB is also the display converter PCB. It stars a Realtek RTD2660, which is a standard video controller. It takes in analog video and drives LVDS displays with it. It's an all-in-one chip that's used on a bunch of cheap monitors, and it's also an 8051!

foone, 11 months ago

Next to it we've got a P25Q40H half-megabyte serial flash chip. This is presumably used to store configuration info for the RTD2660.

foone, 11 months ago

The other chip on the keyboard/video board is an HM82C42. I can't find any info on this specific version, but it's almost certainly an Intel MCS-48 acting as a PS/2 keyboard controller.

foone, 11 months ago

The keyboard is a rubber membrane onto the PCB, like a remote control. It's functional but feels pretty crap.

image/png

foone, 11 months ago

that large connector on the side is called "ISA" on the PCB.

foone, 11 months ago

It's a 60 pin connector. 8-bit ISA is 62 pins, 16-bit ISA is 98 pins.

So if they just merged some grounds, 60-pins is totally doable.

foone, 11 months ago

The other connector is 12 pins:
This one is PS/2 and VGA. An adapter is included with the device.

foone, 11 months ago

Storage is on a 2 gigabyte CF card. It's got Dos 7.1, Windows 95, and a few games pre-installed on it, plus a driver for the CH375 USB storage chip

foone, 11 months ago

Games included:
Doom, Wolf3d, XianJian QiXia Zhuan (aka Chinese Paladin), Tyrian, Raptor: Call of the Shadows, and Uncharted Waters: New Horizons
Daikoukai Jidai II

foone, 11 months ago

there's also the SBVGM audio player, which includes "Funky Stars" and the whole soundtrack of PlanetX3

foone, 11 months ago

@dosnostalgic https://foone.org/ponies/dosnostalgic/funkys.vgm

foone, 11 months ago

@enkiusz Samsung Galaxy S22 Ultra.

foone, 11 months ago

@dascandy42 they absolutely do not