Rebuilding IBM's Most Obnoxious PC - PS/2 Model 70 Type 1
104K views · Apr 25, 2026 · Science & Technology
Comments · 867
@Really........ · 5 months ago
The cool thing about standards in the 80's and 90's is that there was so many to choose from.
121
@vwestlife · 5 months ago
To be fair:<br>1. The PS/2 line was for business users, most of whom had service contracts, so to make service quicker and easier, the chassis was designed to be completely toolless -- the first computer to do so, AFAIK.<br>2. Having an easily replaceable battery kept safely out of harm's way is a godsend compared to having a leak-prone battery soldered directly to the motherboard.<br>3. 3½" floppy drives were still new and there was no settled industry standard for them yet. Other OEMs used what looked like a normal ribbon cable but supplied power through it. IDE hard drives didn't exist yet, either.<br>4. The MCA bus being 32-bit, plug-and-play, and auto-configuring was years ahead of its time, and sure beat configuring jumpers and DIP switches and manually resolving IRQ conflicts. But if you didn't like it, all PS/2 models below 50 still used the ISA bus.
241
@nrdesign1991 · 5 months ago
That accordion floppy box! That was brilliant
50
@dividedbyzero96 · 5 months ago (edited)
<a href="https://www.youtube.com/watch?v=0-Py5VzB54s&t=697">11:37</a> For those curious, the 2M x 36 on the label is referring to the size of the individual SRAM cells in megabits, so its 2 Mbit cells x 36 = 72 Mbit or 9MB total, 8MB of actual capacity plus 1MB for parity
32
@zsteinkamp · 5 months ago
<a href="https://www.youtube.com/watch?v=0-Py5VzB54s&t=570">9:30</a> "Welcome to our nightmare, computer." lol killed me
131
@MikeGervasi · 4 months ago
YES...I can FEEL your anger... We LIVED through it all. Now..ASSIGN THOSE IRQs!!!!!
12
@Jaabaa-1 · 5 months ago
Volume name = PLEASEWORK 🤣 👍
211
@derekchristenson5711 · 4 months ago
When you set the date at 3-27-2026 and declared "Welcome to OUR nightmare, computer!", I felt that in my soul. And laughed, because you gotta laugh or you'll cry, right? LOL
15
@TheBilgepumper · 5 months ago
The 80s and 90s were so weird. Even cheap and relatively bad generic clones were always so much easier to repair and upgrade than IBMs. It was a relief when it became normal to just call compatibles "PCs" without referring to IBM anymore.
47
@stepheneickhoff4953 · 5 months ago
<a href="https://www.youtube.com/watch?v=0-Py5VzB54s&t=567">9:27</a> As a guy who was part of his company's Y2K team in the late 90s, I tensed up a bit here...
20
@jfwfreo · 5 months ago
Wow, THE mouse where the term "PS/2 mouse" came from.
13
@balthxzar · 5 months ago
I audibly gasped at that floppy disk tray you had, it's so beautiful
40
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