by sanbor | 2025-05-31 11:32:04+00:00
I tried to reproduce the situation described in the post by Googling "ps/2 model 280". I refreshed the page about 15 times and gives a very similar answer every time. For example:

The IBM PS/2 Model 280 was a low-end PS/2 model, often associated with the earlier IBM PC/XT and PC/AT models. It featured an 80286 CPU, a smaller hard drive, and a proprietary 3.5-inch floppy drive. While it used ISA slots for expansion, its proprietary RAM and other components made it less attractive for retro computing compared to the Model 30 286

I tried again after 10 minutes and I got the "The IBM PS/2 Model 280 was not a model in the original Personal System/2 family".

It seems the AI response is cached for a few minutes.

I tried in Kagi "ps/2 model 280?". This is the first response:

```

While a specific "PS/2 Model 280" is not definitively documented, here's what can be gathered:

- It seems that AI models sometimes make errors regarding the PS/2 Model 280, describing it as an ISA-based 286 system. 12 - The IBM PS/2 (Personal System/2) was a line of personal computers from IBM, introduced in 1987 3. - PS/2 computers had two BIOSes: ABIOS (Advanced BIOS) and CBIOS (Compatible BIOS). 4 - One source mentions "CHIPS/280" including undocumented IBM PS/2 Model 80 address recovery logic. 5 - The PS/2 Model 30, released in 1987, used an Intel 8086 processor and had an 8-bit ISA bus. 6 - The PS/2 Model 30 286 had a 10MHz 286 CPU and could have 2 MB of RAM. 7 - The PS/2 Model 80 offered enhanced performance for commercial and compute-intensive tasks. 8

References

AI Responses May Include Mistakes | OS/2 Museum www.os2museum.com OS/2 Museum | OS/2, vintage PC computing, and random musings www.os2museum.com List of IBM PS/2 models - Wikipedia en.wikipedia.org IBM PS/2 - Wikipedia en.wikipedia.org Technology ardent-tool.com IBM PS/2 Model 30 - Wikipedia en.wikipedia.org IBM PS/2 Model 30 286 - Computers of Significant History - Userlandia www.userlandia.com IBM PS/2 (Model 80) - Technical specifications ardent-tool.com

```

I waited a few minutes and this is the response now:

```

While information on the IBM PS/2 Model 280 is limited, here's what is available:

- There is mention of the PS/2 Model 280, with claims that it "was a significant step forward in IBM's personal computer line" 1. However, it's also noted that claims about the PS/2 Model 280 being an ISA-based 286 system may be inaccurate 2. - The IBM PS/2 series included a variety of models in different form factors like desktops, towers, all-in-ones, portables, laptops, and notebooks 3. Some notable models include: Model 30: Featured an Intel 8086 processor at 8 MHz and an 8-bit ISA bus 4. Model 80: A high-end desktop with a 32-bit Intel 386 processor, initially running at 16 MHz, housed in a tower case 5.

References

AI Responses May Include Mistakes | OS/2 Museum www.os2museum.com OS/2 Museum | OS/2, vintage PC computing, and random musings www.os2museum.com List of IBM PS/2 models - Wikipedia en.wikipedia.org IBM PS/2 Model 30 - Wikipedia en.wikipedia.org IBM PS/2 Model 80 - Wikipedia en.wikipedia.org

```

I find the way Kagi gives references superior to the way Google does. Anyway, in the second answer Kagi's AI started to get a bit confused by stating "it's also noted that claims about the PS/2 Model 280 being an ISA-based 286 system may be inaccurate" missing the conclusion of the post.