Personal Computer Museum, Canada's Videogame Museum

Cordata PPC

Cordata PPC

Speed12 MHz
Memory512 KB
Hard Drive20  MB

What's this?

Release Date: 1/1/1987
Manufacturer: Cordata
Donated By: William Morris
This is one of those rare machines to come along that not too many people know about. We *think* it's an XT portable machine with a 9" screen but we're not sure on the speed. The model # (PPC-400-25) suggests that perhaps it's a 25 MHz machine but if it is, it's probably not an XT.

The machine uses a Seagate 20MB hard disk. Although the screen is monochrome it's actually a CGA graphics adapter built in.

If you know more about this machine, please contact us.

User Comments
Robert Reid on Saturday, July 30, 2016
I still have my machine mfd by Corona Data Systems but sold under Sperry name. 5 1/4 mono screen, 512Kb RAM, single 5 1/4 disk drive, 40MB HDD. Original disks IBM PC Dos 1.1. Now running MS-DOS 6.22. Fully backed on diskettes. Lol.
Gerry on Tuesday, July 19, 2016
I just purchased one today for resale. Works perfect..if anyone's interested let me know.
Sam Brown on Saturday, June 18, 2016
I had one of these branded Corona Data Systems, identical to the one shown here. It was a 4.77mhz XT and could take an 10MB Hard Disk (A 20MB disk would work up to 11MBs in and then start getting lost with whirring noises). As has been pointed out already, the screen font was absolutely gorgeous. If anybody has one of these machines still working, I would be very interested in extracting the font data from the ROMs. A beautiful machine but prone to having the keyboard controller blow if the keyboard is plugged/unplugged when the power is on. The keyboard itself was very nice too, very professional feel. The machine weighed a ton though.
John Miller on Monday, April 21, 2014
Trying to get my old Cordata/Corona computer to boot up after all these years. Screen comes on and memory test is successful ... yet, get message of "disk boot failure" ... computer goes to "A" drive .. but will not complete boot. I have the 5 1/4 inch DOS disks that it came with. Not sure if the problem is the DOS disk or the floppy drive not reading the disk. Any ideas? Anyone have a disk for booting? I have plenty of blank/formatted 5 1/4 disks so you could make me a copy. Also have a lot of other 5 1/4 software. Can also contact me at
Patrick Devine on Thursday, April 03, 2014
I had on of these machines in the 1985. It was a 4.77Mhz 8088 XT computer, which I eventually upgraded to having an NEC V20 chip to boost the speed. I seem to remember the graphics were monochrome CGA, but it had an absolutely fantastic font in text mode. It came with a 5 1/4" floppy drive, as well as a Seagate ST225 20MiB RLL hard drive which if you replaced the RLL controller with MFM you could get 30MiB out of it.
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