I had several spare parts from my previous PC projects in my possession and wanted to do something with it. So I decided to do my first PC case-mod with retro parts. The finished PC should be able to run DOS games like DOOM 1/2, Duke Nukem 3D and others.
The chest has several holes in the bottom as air inlets. The fan of the power supply blows out the hot air on the back.
I used the RJ45 coupling to get ethernet to the backside and soldered the PS/2 adapters for keyboard and mouse myself.
The display and the speakers get their power from the ATX supply so everything turns on when you hit that power switch…
On the software side I used FreeDOS as an operating system and made myself a game launcher menu using DJGPP and the GRX library. I was even able to find code to play samples with the SoundBlaster. A short video of the box booting into the menu and running doom is available here.
This was actually the second try on the launcher menu. I already implemented a version using FreeBASIC which worked fine on all my PCs and in DOSBox but failed to switch into graphics mode on the DoomBox. I tried to change the graphics board, but with no effect. Seems to be an issue with the mainboard itself as swapping out all the other components didn’t work either…
Recently I built some nano SwinSID following these instructions.After testing one of these little buggers in my Franken-C64 I decided I want to try to connect it to an Arduino.
Some wire placing and code writing later I was able to access the SIDs registers and now I wanted to make some music…
The idea was: use a PC based C64 emulator and replace the SID emulation with the SwinSID connected via USB. First I tried jsidplay2, but I had no luck understanding the timing for the emulated 6510. Luckily I found kernal64, a C64 emulator implemented in Scala.
I had never before used Scala, but as it is Java based I was shortly after able to do this:
Please find my patched kernal64, the Arduino-sketch, schematics and some instructions here.
During the restauration of my old P200 I ran into some issues: the CMOS battery was run flat and the BIOS of the mainboard was to old to get a reasonable amount of HDD space detected. As I mentioned before I was planing to update the P200 with a MMX-CPU of the same speed, but I was not sure if the GA-586HX mainboard had the right revision to be able to do so.
When working on my old Pentium 200 I bought an PCI-USB card at an eBay-shop called Goniema. When I discovered their non-eBay-shop and saw the selection of retro PC stuff and their prices I decided to build another retro-PC from the generation after the P200.