August 12 marks the 30th anniversary of the IBM Personal Computer. IBM released it’s first PC August 12 1981. One of the designers of PC Mark Dean blog that IBM leads the way in the post PC era. Note that IBM decided to leave the personal computer business in 2005, selling our PC division to Lenovo.
13 Comments
Arden Byan says:
Heya i’m for the first time here. I found this board and I find It really helpful & it helped me out a lot. I’m hoping to provide something back and aid others such as you helped me.|
Charlene Holford says:
Hi, Neat submit. There’s an issue together with your internet website in world-wide-web explorer, would check out this… IE nonetheless is the current market chief and a big portion of people today will miss your exceptional producing due to this difficulty.
film blue binatang says:
You’re so cool! I do not believe I’ve truly read
through anything like that before. So good to discover another person
with a few original thoughts on this subject matter. Seriously..
thanks for starting this up. This site is something that’s needed on the internet, someone
with some originality!
work in vietnam says:
An outstanding share! I’ve just forwarded this onto a
friend who was doing a little research on this.
And he actually bought me lunch because I stumbled upon it
for him… lol. So allow me to reword this…. Thank YOU for the meal!!
But yeah, thanks for spending some time to talk about this subject here
on your blog.
coherentmaniac698 says:
Luckily, that only lasted for 18 months. Today I will simply look
at the news circulation about the collection websites,
because the majority of the -litter is gone. I am not asking from Yahoo Finance for brilliance.
It is good enough that I can bypass on the few leftover low quality news sources.
Additionally, that you do not need to make any payments so long as you proceed moving into that house, along with your Social Safety
and benefits will not be afflicted with the money that you’re getting.
custom tee shirts says:
I’m impressed, I must say. Rarely do I encounter a
blog that’s both educative and interesting, and let me tell you, you’ve hit the nail on the head.
The problem is something which too few folks are speaking intelligently about.
Now i’m very happy I stumbled across this in my hunt for something regarding this.
rakennus hämeenlinna says:
After looking into a handful of the articles on your
web page, I really like your way of writing a blog.
I book marked it to my bookmark webpage list and will be checking back soon. Take a look at my website too and
let me know how you feel.
Tomi Engdahl says:
Thank you for your feedback.
I looked at your web site and found it to match my expectations of typical small company web page.
skyfi internet says:
transfer files from one device to another and it even allows inter-platform file sharing system
with the help of which you can easily share files from Android
Tomi Engdahl says:
This SkyFi Internet| Skyfi wifi |skyfi wireless internet (http://www.alltoptricks.com/skyfi-wireless-internet) looks somewhat interesting, but how this was related to the original article=
Tomi Engdahl says:
https://hackaday.com/2022/08/23/ibms-early-pc-attracts-time-travelers/
Even now, our giant supercomputer desktop machines boot as though they were a vintage 1981 PC for a few minutes on each startup. But the PC wasn’t the first personal machine from IBM and, in fact, the IBM 5100 was not only personal, but it was also portable. Well, portable by 1970s standards that also had very heavy video cameras and luggable computers like the Osborne 1.
The IBM 5100 had a brief three-year life from 1975 to 1978. A blistering 1.9 MHz 16-bit CPU drove a 5-inch CRT monitor and you could have between 16K and 64K of RAM along with a fair amount of ROM. In fact, the ROMs were the key feature and a giant switch on the front let you pick between an APL ROM and a BASIC ROM (assuming you had bought both).
Tomi Engdahl says:
IBM PC 8088 REPLACED WITH A MOTOROLA 68000
https://hackaday.io/project/190838-ibm-pc-8088-replaced-with-a-motorola-68000
Ever wonder what it would have been like if IBM has chosen the Motorola 68000 instead of the Intel 8088?
Details
I was wondering what the IBM Personal Computer would have been like if they had chosen the Motorola 68000 instead of the Intel 8088, so I used my MCL86+ to emulate the 68000 and find out!
The MCL86+ is a board which uses a Teensy 4.1 to emulate a microprocessor in C code as well as use its GPIOs to emulate the local bus of the Intel 8088. It can be used as a drop-in replacement for the Intel 8088 and can be cycle accurate as well as run in accelerated modes.
For this project I swapped the 8088 emulation code with my MCL68 code which emulates the Motorola 68000. The 8088 local bus emulation was kept so that all of the 68000’s memory reads and writes could pass through to the IBM motherboard.
Emulating the 68000 is fine, but not very useful without an operating system or some other application to run on it. I chose to use Gordon Brandley’s 68K BASIC which was published in Dr. Dobbs Journal back in 1985.
I should note that just the 68000 emulation is running inside of the MCL86+. All of the IBM motherboard peripherals, video, and memory are used for this project. Video is drawn to the IBM MDA card’s video memory over the ISA bus. BASIC is run out of 64 KB of the motherboard DRAM which is refreshed by the 8327 DMA controller by an interval set by the 8253. The keyboard receives the serial data and generates an interrupt through the 8259 and is cleared by accesses to the 8255. Basically all of the major components and glue logic of the IBM motherboard are used!
Tomi Engdahl says:
IBM PC 8088 REPLACED WITH A MOTOROLA 68000
https://hackaday.io/project/190838-ibm-pc-8088-replaced-with-a-motorola-68000
Ever wonder what it would have been like if IBM has chosen the Motorola 68000 instead of the Intel 8088?