The IBM PS/2 Model 30-286 and Model 70 (as seen in Terry Stewart's computer collection)
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- Опубликовано: 12 окт 2023
- Terry Stewart (tezza) talks about vintage/classic computers in his collection: he IBM PS/2 Model 30-286 and Model 70. Further description can be seen here: www.classic-computers.org.nz/... and here: www.classic-computers.org.nz/.... This video replaces an earlier copy which had very poor audio. See the View Numbers and Comments before the refresh at www.classic-computers.org.nz/...
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The PS/2 is pure nostalgia for me. I took a keyboarding class in tenth grade and this is the machine we used. Loved every moment of that class.
And it comes with a 20m hard disk....I can remember back in the day really needing to make choices about what (small) program could reside on precious hard disks. We really have come some way in a short space of time. That said, the sounds of the boot are mesmerising.
I remember the days when a 20MB hard disk seemed enormous and you couldn't imagine needing more! lol
If you can adjust the shutter speed on your cam, you can make the flicker go away.
4:10 You called the PS/2 pizza box and now I can’t unsee it.
Fun Fact: the IBM PS/2 Has appeared in "The Stanley Parable" and "Portal 2" games. the last one is my favorite. :3
Great job with this video Terry! I’ve never used a PS/2 computer, but I’d like to.
Thank you.
I vaguely remember my elementary school's computer lab having a bunch of these back in 1995 when I was in kindergarten. They were running some IBM networked dos menu system for schools that you had to log in with a username and it gave you a set of programs based on your grade and class.
Thanks for sharing that memory.
Glad to see a new upload on your channel, Thanks for the reminder of how much this line of computers enhanced the clones, I was a computer user back in this time frame and the National Semiconductor 16550AFN (family) chips was a life saver as modems got crazy fast (compared to the slow reaction of the Intel CPUs) the existing serial chips missed characters all the time if you were trying to do multitasking with DESQview for example trying to run BBS software on a computer while it does other things.
"Modems got crazy fast" Really? Modems never got crazy fast nor did they ever tax any CPU. The absolute fastest modems ever made were dual channel ISDN at 64kbs per channel with 128kbs maximum combined speed. I had a 14.4 modem with a 5150 class PC and it worked fine.
When there was a problem, it was the UART (the serial communications chip), not the CPU. This was ALWAYS with external modems. If you bought an 8 bit 56k modem, it would work fine with a 5150.
@@tarstarkusz "interrupt coalescing" Google it, it's had been a problem through the 90's , CPUs would routinely get hammered by network cards and serial UARTs or anything generating an interrupt, the CPU would be interrupted, like it would have its' attention directed to an arriving packet, so adding the 16 bytes buffer gave it time to deal with the arriving data from the modem. The 16550AFN an attempt at Interrupt coalescing with many modes (DMA) and 16 bytes of memory.
Thank you. More refreshed videos to come.
Awesome video! Just bought a model 60
Cheers, thanks!
I used to have one of those. I don't remember the specs or model but it was a PS/2, and had a internal 3 1/2 inch and a external 5 1/4 inch floppy drive. I got it for free, from a school teacher who didn't want it anymore in probably 1999. It had MSDOS and Windows 3.1 installed on it. It didn't have a sound card and couldn't do much, but I still enjoyed playing with it.
Thanks for the memories
That display font is quite different from any DOS machine I've ever seen. It looks cool!
Yes, it's very cool. I love that font!
If you have a SCSI drive, it is well worth installing it if this is an IDE machine (I've never supported any PS/2 386). SCSI is much faster and works without the need for using the CPU. This can lead to a decent performance boost.
This PS/2 has ESDI, which is a drive type I've never even heard of and apparently were only ever used with Maxtor. SCSI is most likely faster. With DOS it probably wouldn't matter, but with OS/2 and 6MB of RAM, it almost certainly will.
The VGA font on the 30-286 looks quite different to me than other VGAs of that era. Very interesting!
Yes, it's a font specific to the PS/2 range as far as I know. As a font, I like it.
@@tezzaNZ as do I - looks very easy to read.
Oh man. I had one of those monitors on A1000 IBM Sidecar. Try getting one of those monitors today. They costs a fortune and people used to throw them out.
Yes, like a lot of old tech. Much of it went to the tip in the day.
The models that come with a red powerswitch are powered by a 8086 processor, the 80286 models had a white powerswitch.
I see. Thanks for the info
She's Beautiful... It's True!
Nice System Sir
Yes, thanks
I remember all the chatter about MCA and that IBM failed to market it properly .... hubris I suppose ...
I think hubris was a factor
For example you say "....appy" instead o "happy." Dropping the first letter.
Suggestion. Please adjust your word choice and accent. I watch Australian, UK, Irish, Welsh, and Scottish videos, yet YOUR annunciation and cadence is extremely HARD to understand. As well your choice of a few key words makes it impossible to discern what you really said. The drop of the first syllable on many words makes it hard to listen to.
Thanks for the tip. Could be the accent but also could be the AI I used to enhance the sound in this original 2013 video where the sound was terrible! The AI enhancement is not the best but certainly better than it was. These are a limited series of legacy videos, and if I do anymore videos there won't be many. I'm not a RUclipsr in the modern sense of the word. I'll bear the comments in mind though.