The Ultimate DEC Rainbow and a PDP Question for You!

Опубликовано: 04 Март 2026
на канале: Usagi Electric
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Our DEC Rainbow is a pretty neat little machine, being a fully triple boot system – can boot DOS, CPM or into VT100 terminal emulation mode. However, it was still missing some vital components to really turn it into the best of the best. First and foremost, the VR241 color monitor. We managed to get a Princeton Ultrasync to work, but it’s not what’s supposed to be bolted to it. Next, we were a little low on RAM. And finally, we were missing the best expansion of them all, the RD51 Winchester hard drive option. Today, we fix all three of those!

For more information on the Rainbow pinout, check out these links:
https://www.larosse.net/pc100/VR241.html
https://www.larosse.net/pc100/dec100-...

If you want to support the channel please hop over to Patreon:
  / usagielectric  

Also, we now have some epic shirts for sale!
https://my-store-11554688.creator-spr...

Come join us on Discord and Twitter!

Discord:   / discord  
Twitter:   / usagielectric  

Intro Music adapted from:
Artist: The Runaway Five
Title: The Shinra Shuffle
https://ocremix.org/remix/OCR01847

Thanks for watching!

Chapters
0:00 Hello and welcome back…
2:09 John the legend!
3:46 Disassembly
5:57 A close look at the hardware
8:21 Cleaning time
9:34 Time to make a new cable
11:42 Round 1, fight!
12:55 Round 2, maybe don’t fight as hard as round 1…
15:36 Clean that floppy drive
16:40 Round 3
21:24 I got a question for y’all about PDP-11s!
24:43 Sunny-kun!