Peter's site blog
Two interesting pages about the Olivetti M20 - one of the few computer which have a Z8000 and can run CP/M-8000 
Monday, December 15, 2008, 10:25 PM
Posted by Administrator
Full with additional links and infos, more than just a vintage computer museum entry: ... tim20.html

To get an impression from what I'm talking - here's an image from an M20 machine,
running CP/M-8000 (click on the picture to zoom):

The machine was selled in 1982 with PCOS (that's an operating system with cryptic commands, even more cryptic than CP/M was)...

There was an additonal 8086 card available to run MS-DOS, but that's another story.
The cpu was - to document it more accurately - a Zilog 8001, the cpu family is named 'Z8000'.

Still one of the most "rich" web pages about the Olivetti M20 can be found at

2 comments ( 175 views )   |  permalink   |  related link   |   ( 3.1 / 6096 )
Another very interesting vintage computer blog ... not very frequently updated, but good entries ! 
Tuesday, November 25, 2008, 10:00 PM
Posted by Administrator
I found surprisingly two other vintage computer blogs,
one from Howard Harte at
(with less entries for the present but many for 2007),
and a bigger one at,
with a bigger number of Apple II related entries.

Howard Harte describes the root (history) of CP/M and that was really interesting:
You can also found some very interesting software pieces at
just look for "Bootable disk images with older Digital Research CP/M versions"
on that mentioned page from Udo Munk.

add comment ( 141 views )   |  permalink   |  related link   |   ( 3.3 / 466 )
Cracking an Osborne 1 into parts - interesting pictures 
Sunday, November 9, 2008, 02:22 PM
Posted by Administrator
Very interesting pictures can be found at TechRepublic - they split an Osborne 1 part by part, hopefully they assembled it back to a working unit...

As far as I know, that's an older one, not the newer model with less rounded case corners.
The detailed pictures from the Double Density are also amazing, because later computer models didn't need such extra logic due to more intelligent microcontroller like the upd765.

add comment ( 135 views )   |  permalink   |  related link   |   ( 3.2 / 3430 )
How to transfer Apple Disk Images from a modern PC to an Apple II (with a super serial card) 
Friday, October 31, 2008, 08:00 PM
Posted by Administrator
Indeed I didn't think about it yet. But it is not too difficult.
Getting an image from Asimov's site at
Reading all infos at
Transferring the image back to a real Apple ][.
Have fun.

Have to do it with "The Hitchhiker's Guide to the Galaxy".
Grab it at
If the game is too difficult (you have to find the right words also), take a look into
(Caution: Spoiler!)

To take a look into these disk images, just use Ciderpress

add comment ( 136 views )   |  permalink   |  related link   |   ( 3.1 / 5830 )
Another rare CP/M portable from Televideo... 
Friday, September 19, 2008, 12:11 AM
Posted by Administrator
Had time to search for several topics, and suddenly I found a hint about a not so well known CP/M 2.2 portable computer (less famous):

A Televideo TPC-I, not really portable (with a similar weight as the Osborne 1) but still an "all-in-one" CP/M machine.

More infos at

I have to collect more data about it, because there was surprisingly also a GSX-80 implementation available for this computer (this is rare).

Also, I thought about, to add info pages not only for the Televideo above, but also for the Epson PX-8 (because it was also a CP/M portable).

The pages about the Z-80 Video Pak from "Data 20 Corporation" for the C64 was also very interesting, because I collected many infos about CP/M 2.2 for the C64 already, but missed this "pearl" (but the cartridge seems to be very rare).

2 comments ( 230 views )   |  permalink   |  related link   |   ( 3.3 / 577 )

<<First <Back | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | Next> Last>>