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TRS-80 Model 100 with RARE Bubble Memory Expansion - World's First Laptop
Recently I picked up a couple Model 100 laptops, including one with a very strange expansion unit. This is apparently a "SoundSight Bubble Memory" from 1984. It was a somewhat rare add-on that gave the computer an additional 128k of memory (up from a max of 32k).
While I have not been able to find any information on the Bubble memory online, I did figure out how to interface with it! The associated ROM chip needs to be activated by running "CALL 63012" from BASIC. The user then has a "Bubble" program that lets you view different RAM pages and load/save files to and from the Bubble unit.
I was hoping to also use a TPDD Backpack drive (www.soigeneris.com/tandy-tpdd-2-backpack-drive-2), but ran into issues with the two Tandy 100s I have. One appears to have a bad memory chip, and the other is such an early model that it has the wrong modem resistors on the serial port. Because of this, I also couldn't connect either of them to a modern computer via serial port. That might have to wait for a future video when I have time to re-solder some resistors.
The Tandy Radio Shack (TRS-80) model 100 is considered by some to be the first "true" laptop, although there were a few other contenders like the Epson HX-20. The series was followed by the model 102 and 200, all of which I actually had when I was a kid in the 90s! They were based on the Kyocerea KC-85 from Japan, and there were a few compatible clones like the NEC PC-8201 and Olivetti M-10. Accessories included a tape drive, floppy disk drive, acoustic modem, printers, etc. There were also many aftermarket ROM expansions and custom software for various uses. These were very popular with travelling salesmen, writers, reporters, and others who needed a computer outside of the office.
Big thanks to FreeGeek Twin Cities (www.freegeektwincities.org/) for providing one of these laptops and the Bubble RAM!
Backpack how-to video: ua-cam.com/video/3es0NLJmd2c/v-deo.html
More Backpack documentation: github.com/Jeff-Birt/Backpack
I found a ton of TRS-80 software on www.club100.org/, so if and when I get the serial port working, I can try out all kinds of games, sound and graphics programs, etc!
Saveitforparts t-shirts and other merch at saveitforparts.myspreadshop.com/
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Переглядів: 3 044

Відео

Robots And Lasers And Science Oh My! (Open Sauce 2024)
Переглядів 8 тис.9 годин тому
Open Sauce 2024 has been called an "Adult Science Fair", although it's not *that* kind of "Adult", unless you count a certain chess project. It's a convention for makers and inventors and creators to get together and show off all their weird projects, crazy ideas, and fun toys! This was the 2nd year the convention has been held, and the first time we attended. It's hard to describe just how cra...
I Crashed My Railroad Pump Car
Переглядів 18 тис.21 годину тому
The DIY pump car is still having some issues, this was supposed to be a test before taking it on a longer trip, but the test revealed more work to be done! We also got hassled by a nosy neighbor who didn't like rail vehicles using railroad tracks! Saveitforparts t-shirts and other merch at saveitforparts.myspreadshop.com/ Join this channel to get access to perks: ua-cam.com/channels/NLRcEn78Vc6...
Making A Scale Model Of Geostationary Orbit
Переглядів 11 тис.День тому
This is a bonus project / display for Open Sauce 2024. I tried to make a scale (in distance, not size!) model of satellites in geostationary orbit. Just a quick demo of the actual distance to TV satellites, GOES, etc. Saveitforparts t-shirts and other merch at saveitforparts.myspreadshop.com/ Join this channel to get access to perks: ua-cam.com/channels/NLRcEn78Vc62C3GkMvBgtA.htmljoin Or suppor...
Satellite Hacking Cyberdeck v2.0
Переглядів 80 тис.14 днів тому
My old cyberdeck computer had some issues, so I built another one! This is custom designed for radio and satellite experiments. It's also intended to be part of my exhibit at Open Sauce 2024 (opensauce.com/). The case is a Pelican 1430. The computer is a Raspberry Pi 4B, with 7" touchscreen. The front panel is laser-cut from HDPE and the "drive bays" are 3D printed from this design: www.printab...
Trying Meshtastic For The First Time
Переглядів 24 тис.14 днів тому
So I finally tried that Meshtastic thing people have been talking about. It's a short-range communication system for text messages that operates on unlicensed frequencies, so it's legal for anyone to use. Apparently I seem to be the only person in my neighborhood who's using it! Since I can't find anyone to message with, this is mostly a build and brief overview video for the Lilygo T-Deck. Thi...
DIY Satellite Tracker Pt 2 (And Radio Telescope Struggles!)
Переглядів 20 тис.21 день тому
This video started as an attempt to make my satellite tracker into a radio telescope, but ended up just being an update to the tracking system. I added solid state relays, an LCD screen, and a separate power input to avoid some of the USB reset issues. I tried writing some code similar to my miniature radio telescope project (ua-cam.com/video/lVOTZxNCgTM/v-deo.html) but I still haven't figured ...
Will Our Geodesic Dome Survive A Storm?
Переглядів 21 тис.21 день тому
Since it's tornado season in the Midwestern US, I figured we should make sure the dome is secure! Last week we put in half the rebar anchors and most of the reinforcing plates, and this weekend we got all but two of the outer plates done. We also did some of the inner ones and drove in twice as much rebar. Hopefully the thing is now secure against normal thunderstorms! It probably still wouldn'...
Assembling A Surplus Geodesic Space Dome
Переглядів 36 тис.28 днів тому
Last fall we went up to Carp, Ontario, to pick up a surplus radome! This came from a former NATO satellite facility, which is now used as a radio observatory. While I'm not exactly sure where this particular dome was used, these are frequently found on radar towers, satellite ground station downlinks, and radio telescopes. They provide protection from the weather for delicate antennas and other...
Is Creality's Falcon 2 Pro Laser Engraver Really New And Improved? (A Saveitforparts Review)
Переглядів 13 тис.Місяць тому
Last year I reviewed the original Creality Falcon 40W laser engraver and had a few concerns about it. This year, Creality has a new upgraded version, the Falcon 2 Pro. They've fixed a lot of the issues I had, including a much better enclosure and improved airflow and reliability. The laser is very powerful and fast, I was able to do most of my engraving and cutting projects in under an hour per...
Automated Weather Satellite Ground Station (Mostly Made From Trash)
Переглядів 29 тис.Місяць тому
I've just finished a major upgrade to my DIY satellite ground station. This involves a larger (7ft diameter) dish for geostationary GOES-East. I also moved my QFH antenna that receives Polar-Orbiting NOAA and Meteor satellites on VHF frequencies. This project had some ups and downs, as do most of my builds! I'm using as much second-hand and free equipment as possible to keep costs low. The big ...
Exploring Huge Cave With Saber-Tooth Cat Tracks
Переглядів 9 тис.Місяць тому
We took a break from digging sandstone caves to explore a real natural cave in Missouri! This one has some great formations, wildlife, and even ancient saber-tooth cat tracks in the mud! Check out our sandstone tunnels here: (ua-cam.com/video/zmGVyzXiF5g/v-deo.html Saveitforparts t-shirts and other merch at saveitforparts.myspreadshop.com/ Join this channel to get access to perks: ua-cam.com/ch...
Mid-Size TV Dish Modified For Geostationary Weather Satellites
Переглядів 12 тис.Місяць тому
Mid-Size TV Dish Modified For Geostationary Weather Satellites
Small TV Dish Modified For HRPT Weather Satellites - Trash Antenna Build w Beer Cans & Duct Tape!
Переглядів 23 тис.Місяць тому
Small TV Dish Modified For HRPT Weather Satellites - Trash Antenna Build w Beer Cans & Duct Tape!
Human-Powered Generator For Off-Grid Electricity - British Military Surplus Radio Power System
Переглядів 61 тис.Місяць тому
Human-Powered Generator For Off-Grid Electricity - British Military Surplus Radio Power System
Failing (Again) To Make Honeywell Tablet Useful
Переглядів 29 тис.2 місяці тому
Failing (Again) To Make Honeywell Tablet Useful
Kaiweets KTI-KO1 Thermal Camera Review
Переглядів 5 тис.2 місяці тому
Kaiweets KTI-KO1 Thermal Camera Review
Is An Old Honeywell Tablet Useful For Anything?
Переглядів 14 тис.2 місяці тому
Is An Old Honeywell Tablet Useful For Anything?
Surplus Metascope Infrared Viewer - US Navy Signal Device
Переглядів 16 тис.2 місяці тому
Surplus Metascope Infrared Viewer - US Navy Signal Device
I Got An Oscilloscope! Now What Do I Do With It?
Переглядів 15 тис.2 місяці тому
I Got An Oscilloscope! Now What Do I Do With It?
I Went A Little Extra For The Solar Eclipse
Переглядів 38 тис.2 місяці тому
I Went A Little Extra For The Solar Eclipse
Digging A Secret Catacomb (Sandland Tunnels)
Переглядів 12 тис.2 місяці тому
Digging A Secret Catacomb (Sandland Tunnels)
April Behind The Scenes, Mailbag, & New Wireless Mic Test
Переглядів 7 тис.2 місяці тому
April Behind The Scenes, Mailbag, & New Wireless Mic Test
Trying #EIOTClub SIM Cards Off Grid & Underground
Переглядів 10 тис.2 місяці тому
Trying #EIOTClub SIM Cards Off Grid & Underground
Russian Meteor M2-4 Satellite Is Back Online!
Переглядів 14 тис.2 місяці тому
Russian Meteor M2-4 Satellite Is Back Online!
Broken Atlantic Research Interview 40A Vintage Computer / Data Analyzer
Переглядів 10 тис.2 місяці тому
Broken Atlantic Research Interview 40A Vintage Computer / Data Analyzer
How To Receive And Decode L-Band Weather Satellites
Переглядів 30 тис.2 місяці тому
How To Receive And Decode L-Band Weather Satellites
Can I Make A Satellite Dish From A Big Bowl?
Переглядів 22 тис.3 місяці тому
Can I Make A Satellite Dish From A Big Bowl?
Fixing & Testing Old Miner's Lights
Переглядів 14 тис.3 місяці тому
Fixing & Testing Old Miner's Lights
I'm Writing A Book! (And it has nothing to do with this channel!)
Переглядів 12 тис.3 місяці тому
I'm Writing A Book! (And it has nothing to do with this channel!)

КОМЕНТАРІ

  • @PanoThePeakbagger
    @PanoThePeakbagger 4 години тому

    Yo dog, you should totally go be a guest on the SafetyThird Podcast.

  • @HennerZeller
    @HennerZeller 4 години тому

    In my TRS80 100 schematic transcription (on github) I annotated the relevant resistors mentioned in the bulletin. Soldering required unfortunately. If you want to avoid desoldering the old ones, you can probably get away with parallel soldering 390 Ohm resistors in parallel (on the back of the board). Might be a tad less annoying.

  • @lady_draguliana784
    @lady_draguliana784 4 години тому

    If you end up with one that doesn't work at all, you should gut it and replace it all with modern tech to make a "sleeper" 😁

  • @lady_draguliana784
    @lady_draguliana784 4 години тому

    "Banned in Texas"! 🤣🤣🤣🤣🤣🤣🤣🤣 🏳‍⚧⚧🏳‍🌈

  • @lady_draguliana784
    @lady_draguliana784 5 годин тому

    Maybe a video on learning the needed soldering skills (and salvaging/rigging up the gear for it)!

  • @fotografm
    @fotografm 5 годин тому

    Brilliant stuff. I really enjoy your channel !!!

  • @RNMSC
    @RNMSC 5 годин тому

    I still have my Tandy 200. It needs a new power switch, The 200 was one of the reasons that Radio Shack was in operation as long as it was. It was the first clamshell computer on the market, and Tandy Patented the concept. For the next 17 years, any laptop computer that was sold in a clamshell format, payed a royalty to Tandy to be able to sell that device. It wasn't the only thing they did right, but moving to selling cell phones pretty much killed the stores.

  • @eliotmansfield
    @eliotmansfield 5 годин тому

    the Olivetti M10 which is a sister to these had a tilting screen which is far better to use.

  • @karlschuneman7960
    @karlschuneman7960 5 годин тому

    can I buy one of those model 100's from you?

  • @SpaceGringos3D
    @SpaceGringos3D 5 годин тому

    Noice

  • @brandongotzpowers
    @brandongotzpowers 5 годин тому

    In the next video hacking the government satellites with it

  • @NG-VQ37VHR
    @NG-VQ37VHR 6 годин тому

    You're awefully lucky to have lived that many years and still not know what those little "beans" are.

  • @TSGEnt
    @TSGEnt 6 годин тому

    THis was great! I was very close to getting trs-80 (trash-80) but opted instead for an Atari 400. Love it!

  • @patchvonbraun
    @patchvonbraun 6 годин тому

    I lugged a Toshiba T1100 through New Zealand in 1989. Like a damned chump :)

  • @joeg1992
    @joeg1992 6 годин тому

    Very cool, I still have the NEC PC-8201 version of The Tandy from back when I was a kid, we bought it new. Mine worked last time I turned it on. I do have some of the manuals, do you think they would have what you need?

  • @garagemancave666
    @garagemancave666 6 годин тому

    The trash 80!

  • @TinyHouseHomestead
    @TinyHouseHomestead 7 годин тому

    HEY! I might have helped build those! 😱😁🤪😝👍👍🇺🇸

  • @bierbarrel
    @bierbarrel 7 годин тому

    You have a great channel...I like gay people!

  • @monad_tcp
    @monad_tcp 7 годин тому

    11:24 the thing probably needs 5A at 5V

  • @jimmaag4274
    @jimmaag4274 7 годин тому

    My first computer was a used COCO I got for working afternoons at Radio Shack in the fall semester of '85. Rigged up an old portable cassette recorder for mass storage. I had the 4K RAM upgrade.

  • @webmonkees
    @webmonkees 7 годин тому

    I have one of the pocket ones, when complaints were nobody needed a computer that fit in a pocket. even a thermal printer, it's like Space 1999 props, (computers reading out paper strips of data)

  • @rareimpalass1966
    @rareimpalass1966 7 годин тому

    I think I still have my battery club membership card from RadioShack.

  • @AdrianBoyko
    @AdrianBoyko 7 годин тому

    About 15 years ago, I had a business meeting with IT folks at the St. Petersburg (Florida) PD and they had literal STACKS AND STACKS of these that they were finally retiring. I guess they had them in the police cars.

  • @x_CrossHair_x
    @x_CrossHair_x 7 годин тому

    LOL.. I Had one.. (Wait.. !! 😲) That's Mine..! 😉 (Radio Shack TRS-80 "White Computer Cases" Always Turned Tan-Yellow in time so did the CoCo 3 or 4 / TRS-80 Model 4 Same thing. (FYI Bubble memory is a bunch of "Microscopic" Toroid Cores magnetically Charged ) Just like old School Juke-Box's Used to know what Song you Selected... (FYI DB-9 Bar Code Reader..)

  • @johnbecker8768
    @johnbecker8768 7 годин тому

    My number was 3. That's awesome!

  • @cpm1003
    @cpm1003 7 годин тому

    Bubble memory was non-volatile, like core memory. I think it was also power hungry when in use. The chip had to warm up in order to work, and had a built in resistive heater.

  • @DancerVlt69
    @DancerVlt69 7 годин тому

    Entering BIOS: Alternatively F2 or DEL That's are 2 very interesting "laptops"!

  • @Rody_le_Cid
    @Rody_le_Cid 7 годин тому

    Phone number was #3!?

  • @chadshobbies4018
    @chadshobbies4018 8 годин тому

    My first computer was a trs 80 coco. I learned to code in trs color basic. It was the beginning of a long journey of coding.

  • @RinoaL
    @RinoaL 8 годин тому

    I have this same exact computer with the bubble memory expansion! I got it in jacksonvillve IL at the steam festival so I wonder if it was something more available in the midwest since I've never seen the bubble memory module in california.

  • @MAGGOT_VOMIT
    @MAGGOT_VOMIT 8 годин тому

    @ 17:58 Now you've done it. Dormant world destroying virus released!! 😳😵‍💫 😉

  • @jedharding3492
    @jedharding3492 8 годин тому

    Gabe says "dingus" = drink

  • @kevindowd31021
    @kevindowd31021 8 годин тому

    Time stamp 7:50, cool Roach eggs! 🪳🪳🪳🪳

  • @aserta
    @aserta 8 годин тому

    Cap change for long term use.

  • @UncleBildo
    @UncleBildo 8 годин тому

    OMG, ain't seen a TRASH-80 in eons! I played with one of those as a geeky kid.

  • @fiendlybrds
    @fiendlybrds 8 годин тому

    RIP - cockroach egg purses in the first unit you opened.

    • @MAGGOT_VOMIT
      @MAGGOT_VOMIT 8 годин тому

      Yep, my first thought as I found them in an old adding machine.

    • @lady_draguliana784
      @lady_draguliana784 5 годин тому

      yep, I was thinking roach eggs or roach droppings depending on density and texture

  • @aserta
    @aserta 8 годин тому

    7:57 cockroach pods - either American or Brown Banded. The literal bug in the system. :)

  • @Peter_S_
    @Peter_S_ 8 годин тому

    Wild, I was just mentioning bubble memory in a conversation with a coworker a couple hours ago.

  • @barkeaterden
    @barkeaterden 8 годин тому

    wow...I had a model 100...used it to takes notes for a IBM 360 assembly class that I shouldn't really have taken. Looking to replace it with NEC Ultralite PC-17-02 to do packet radio goodness

  • @Maw976
    @Maw976 8 годин тому

    Weird, i also just busted out my model 100

  • @gcm4312
    @gcm4312 8 годин тому

    It's very rare to capture capacitors in that stage of their lifecycle! What a find ;)

    • @RNMSC
      @RNMSC 4 години тому

      Most of these caps are from an era before China tried to steel the recipe Japan had developed for electrolytic capacitors, and got the wrong recipe. A lot of companies saw the low price on the new caps out of China, and saved a bunch of money by not buying the proven Japanese caps. Only to learn 5-10 years later that the caps would fail and take the board they are soldered to along for that ride. These caps are going to be good until the electrolytic in the batteries dries out. That will present a more observable problem w/o having to look for damage on the circuit board. (usually)

  • @snowpirate2652
    @snowpirate2652 8 годин тому

    The struggle of getting into the BIOS is so real! XD

  • @briansouth9325
    @briansouth9325 8 годин тому

    Wished troons were banned here

  • @JonRoulet
    @JonRoulet 8 годин тому

    Thank you for this TRIP down memory lane I remember my dad bringing this home. He was proud of his model 100 computer. I was not allowed to touch it a whole lot but it is the first device I got to see work on the world scale with compuserve and he showed me a few games on there. Regrettedly it got tossed out a couple years back and I'm so wishing it had not been thrown out. It was 1 of 3 vintage computers Thrown out the other 2 was a Texas Instruments 99 a and atari ST520. But thanks again for the trip back to the 80s.

  • @Geek-a-Zoid
    @Geek-a-Zoid 8 годин тому

    TY for the video

  • @mattparker9726
    @mattparker9726 8 годин тому

    28:33 so basically a standard Linux affair? I don't care if Windows spies on me, at least it works without a million patches.

  • @smellycat249
    @smellycat249 8 годин тому

    I think those are cockroach eggs

  • @mattparker9726
    @mattparker9726 8 годин тому

    28:12 try the "Delete" key. failing that, try F11.

  • @ChosenOne6666
    @ChosenOne6666 8 годин тому

    He is one of the smartest of our generation

  • @snowpirate2652
    @snowpirate2652 8 годин тому

    As someone who grew up with typewriters being a thing in libraries and in my home, I love this formfactor for a basic writing computer.