IBM Portable PC (Model 5155): Part 4 - It lives!
Got the power supply back together, re-installed the cards I needed: CGA with composite out, AST SixPakPlus memory expansion, floppy controller and XT-IDE (rev. 4 from Glitchworks). Left the HDD controller out.
And ... it worked! Well, it POSTs a "601" error which I assume is because there's no floppy drives connected.
I was surprised ... managed to get to GW-BASIC via the XT-IDE ROM boot. After some jumper fiddling, I managed to boot off the CF card.
I'm using a 1GB Compact Flash card ("Dick Smith Electronics" branded!) that I know worked on my Amstrad PC1640 (using a Lo-Tech XT-IDE card).
So it booted into MS-DOS 6.22 and was working fine. I loaded up my favourite game of all time ... The Ancient Art of War. Man, I played that game for hours ... along with The Ancient Art of War at Sea ... even managed to recover some campaigns I created on 5.25" floppies from back in the 90s (with references to now-ex-girlfriends, for some reason).
Next - try to get the floppy drives working. Not really necessary as I can just load stuff onto the CF card, and even re-use the original HDD front panel & activity LED for the CF card ... let's see.
Glitchworks XT-IDE Rev. 4 - mine's got "Slot 8" support and I'm using v1.1.5 of the XT-IDE BIOS (XUB):
http://www.glitchwrks.com/2017/11/23/xt-ide-rev4
XT-IDE Rev. 4 summary:
http://www.minuszerodegrees.net/xtide/rev_4/XT-IDE%20Rev%204%20-%20general.htm
XT-IDE BIOS (XUB) versions:
http://www.minuszerodegrees.net/xtide/XUB/XUB.htm