PC archeology: Leading Edge Model D

#DOScember

Time for another interesting machine, this time a little more conventional than the "Blender PC" but still cool. A PC XT clone from 1985 including a compatibility for the XT-IDE card.

#doscember official playlist:

https://bit.ly/DOScember2020

#doscember Participating Channels:

8-Bit Show And Tell:    / 8bitshowandtell  
Adrian%27s Digital Basement:    / adriansdigitalbasement  
ctrl-alt-rees:    / ctrlaltrees  
DaveJustDave:    / mrdavejustdave  
Jan Beta:    / janbeta  
Josh Malone:    / joshmalone_48kram  
LGR:    / lazygamereviews  
MindFlareRetro:    / mindflareretro  
Mr Lurch's Things:    / mrlurchsthings  
Noel's Retro Lab:    / noelsretrolab  
Ovesen.net    / ovesennet  
RetroBytes    / retrobytesuk  
RetroSpector78:    / retrospector78  
RMC:    / rmcretro  
RoseTintedSpectrum:    / rosetintedspectrum  
Tech Tangents:    / akbkuku  
The 8-Bit Guy:    / adric22  
TheRetroChannel:    / theretrochannel  

Leading Edge "Model D"
Model DC-2011

Leading Edge Keyboard
Model DC-2014

SNB-018 Universal FDC Card
Looking for a BIOS for this card

Hard drive on the hard card:
Kyocera KC-30B 33MB 3.5" RLL ST506

Hard drive controller:
SCIENTIFIC MICRO SYSTEMS OMTI 5528

0:00 Intro
1:20 Leading Edge Model D Tour and Testing
46:21 Getting XT-IDE working on the Leading Edge Model D
56:37 Outro

--- Video Links

Original Leading Edge BIOS v2.01:
https://archive.org/details/leading-e...

Noel's on TI99 basic and other basic system performance:
   • TI-99/4A BASIC Performance, Games and...  

The ROM I used on this machine was here: http://www.minuszerodegrees.net/xt_cl...

--- Tools

Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.16...

Jonard Tools EX-2 Chip Extractor:
https://amzn.to/2VazxDS
https://www.jonard.com/Products/EX-2-...

Wiha Chip Lifter:
https://amzn.to/3a9ftWw
https://www.wihatools.com/precision-c...

O-Ring Pick Set: (I use these to lift chips off boards)
https://amzn.to/3a9x54J

Elenco Electronics LP-560 Logic Probe:
https://amzn.to/2VrT5lW

Hakko FR301 Desoldering Iron:
https://amzn.to/2ye6xC0

Rigol DS1054Z Four Channel Oscilloscope:
https://www.rigolna.com/products/digi...

Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
https://amzn.to/3adRbuy

TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
https://amzn.to/2wG4tlP
https://www.aliexpress.com/item/33000...

TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MI...

EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/

DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DS...

Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-...

Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.ebay.com/itm/14-16-18-20-...

RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
http://www.retrotink.com/

Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-...

Heat Sinks:
https://www.aliexpress.com/item/32537...

Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI

--- Links

My GitHub repository:
https://github.com/misterblack1?tab=r...

Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
https://www.commodorecomputerclub.com/

--- Instructional videos

My video on damage-free chip removal:
   • How to remove chips without damaging ...  

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino

Outro Music:
Abyss by | e s c p | https://escp-music.bandcamp.com
Music promoted by https://www.free-stock-music.com
Attribution 4.0 International (CC BY 4.0)
https://creativecommons.org/licenses/...