DONE!

Looking forward to have more time to care about this one 😉

Nice looking case,
Look forward to seeing you get it going

Thanks! Board is assembled again. Tested and running, including keyboard 😀 Detects 4 MB of RAM, but one bank still free?

Still need to clean the case in shower/dishwasher, but this can wait.

Will then fill the gaps: 5,25" and 3,5" floppy and MFM/RLL hard drive. Quite sure it will look beautiful again. I dont have to care too much about it, there are lots of scratches anyway 😀

Found another ad to see how it should look like:

Disassembled everything and cleaned in the dishwasher:

Front looks like new now:

Some dfficulties with the missing mounting rails:
5.25" mounting rails - where to get?

I will fix the 5.25" drive with the 2 rails I have in the middle. On the top I will put the 3.5" drive, not possible to fix it in the correct position without rails, but it will stay in its position without screws...

On the bottom I will mount the ST-225. I will order some longer screws for that to fix it in the case. This drive will be hidden under the cover anyway, therefore its exact position does not matter...

excellent, looks like you got to it just in time too - much longer and those power traces would have been history

Finally the longer 6 - 32 UNC screws arrived. Now I was able to mount the 5.25" HD without rails. I had to choose a ST-238R because the Controller was RLL not MFM. Also mounted the 5.25" and the 3.5" Floppies. Found a way to fix the 3.5 in the top slot (more or less..).

Now it was time to upgrade the System to 12MB XMS and 2 MB EMS. Also added a CF connected to a Soundblaster as Drive D for data exchange. More details about my upgrade later 😉

So inside I kept the most components I received (Mainboard/IO-card/RLL-Controller).

The RLL/Floppy Controller seems to have a loose contact, maybe I am going to replace it. But I like the unusual Blue PCB.

I replaced the original EGA-card with a HEATH P/N 150-307 to have the option to connect a VGA - dont have space to have an EGA monitor on my desk all the time. Switching between TTL and Analog ist done by simply setting DIP 6:
Re: Heath 150-307-3 Chips EGA/VGA

I added a CT3900 with 2x16 MB RAM. It is non-PNP therefore I can use its IDE-port to connect a CF-card on a slot-bracket and optionally boot from it. I configured the IDE as quarternary on port 168h and drive it with an XT-IDE ROM on a non-PNP Ethernet card (N200E2). The PC starts from the RLL-Disk as C: and I can use the CF-card as drive D:

Regarding RAM I have 4 MB onboard and added RAM-card with additional 8 MB configured as XMS to get a total of 12 MB 😀

To have EMS I added a Intel AboveBoard with 2 MB, page frame at D000h.

View from behind:

Complete with EGA-Monitor:

Benchmarks:
Topbench detects a 386SX but in fact its a 286-12...