Mark J. Blair

A feral engineer lurking near Riverside, CA, USA

Mark J. BlairNF6X@oldbytes.space
2025-06-17

@brouhaha grasps finger...

Mark J. BlairNF6X@oldbytes.space
2025-06-16

Good news: Got my RCA VP3301 video terminal with #CDP1802 CPU and RCA VIS chipset this weekend!

Bad news: DIN plug I ordered from Digi-Key for power input was missing one of the pieces needed to assemble it.

Good news: Raised the issue on the Digi-Key web site, and notice of replacement part shipment being approved arrived very quickly, even though it's late Sunday evening!

Bad news: I have not powered up the terminal yet.

Good news: I did dump the terminal's ROM, which is not believed to be archived yet by the #COSMAC community! It was even my first time actually using my #glasgowinterfaceexplorer for a real purpose.

Bad news: While the terminal came with a user's manual and a schematic of the UART subsystem, it didn't include a full schematic, so it'll take some work to figure out the address map and whatnot.

Good news: Reverse engineering old computers is fun!

Mark J. BlairNF6X@oldbytes.space
2025-06-14

I found a 2 year old Digi-Key package buried on my workbench, and I don't remember what I ordered the parts for.

Mark J. BlairNF6X@oldbytes.space
2025-06-14

@brouhaha I canna go on! I'm tired of happiness. I'm tired of comfort and pleasure.

Mark J. BlairNF6X@oldbytes.space
2025-06-14

@brouhaha Sounds like something Spock would say to an android.

Mark J. BlairNF6X@oldbytes.space
2025-06-11

@trevorflowers Not being able to create multiple bodies from individual shapes of a single sketch is one of the things I've missed the most as I migrate to FreeCAD from Fusion 360. 👍

Mark J. BlairNF6X@oldbytes.space
2025-06-10

@blakespot I wish you hadn’t put that song in my head. 🤪

Mark J. BlairNF6X@oldbytes.space
2025-06-09

I bought an RCA VP-3301 terminal based on the #CDP1802 #COSMAC the other day on eBay. It just occurred to me that I have the same model of TV shown in this ad, except branded as the TRS-80 Color Video Receiver and marketed for the TRS-80 Color Computer. Are y’all thinking what I’m thinking?

kmoser.com/computerhistory/ima

Mark J. BlairNF6X@oldbytes.space
2025-06-09

Falling down the #RCA #CDP1802 #COSMAC rabbit hole again. Updated 1802 Membership Card and VIP2K kits are on their way to me, as well as an RCA VP3301 terminal that I paid too much for on eBay. Can't wait to see that stunning 40x20 text in several colors!

Mark J. BlairNF6X@oldbytes.space
2025-06-09

@trevorflowers

It was a good example of why chasing down certifications is such a tedious necessity in my day job at a defense contractor.

Anyway, my dad's new grill cleaner probably won't arrive in time for Father's Day, but it'll be worth the wait.

Mark J. BlairNF6X@oldbytes.space
2025-06-08

@paulrickards @ef1j That’s a good protagonist name.

Mark J. BlairNF6X@oldbytes.space
2025-06-07

@krishnadraws I predict that @savetz will end up owning Atari and @Carrington will end up owning Apple.

Mark J. BlairNF6X@oldbytes.space
2025-06-07

@trevorflowers I never realized that she's 6'5" before.

Mark J. BlairNF6X@oldbytes.space
2025-06-06
Mark J. BlairNF6X@oldbytes.space
2025-06-06

@tubetime I hate it when the lid of my ][+ keeps blowing off due to overpressure.

Mark J. BlairNF6X@oldbytes.space
2025-06-05

@blakespot Should that surprise anybody who has been paying attention, though?

Mark J. BlairNF6X@oldbytes.space
2025-06-04

I'm going to start referring to my Outlook calendar as my liberal agenda.

Mark J. BlairNF6X@oldbytes.space
2025-06-02

My employer does at least one smart thing: Selling company T shirts to employees for $3 each. Without any sort of uniform mandate, an awful lot of folks opt in to wearing the company branding.

Mark J. BlairNF6X@oldbytes.space
2025-06-02

Client Info

Server: https://mastodon.social
Version: 2025.04
Repository: https://github.com/cyevgeniy/lmst