The information we have about this computer is sketchy.
O.S. was a powerful graphical BASIC interpreter modded from the TI basic.
Forth language was also available but not widely used.
Cortex had a mode to give 256 K RAM. ROM was copied into RAM at start-up and then swiched off allowing boot code and basic to be altered at start-up.
Cortex was followed by the Cortex II which was just a re cased version with same style as early apple/dragon 32 beige/yellow plastic sloping cases, but using same main board and disk drives.
We need more info about this computer ! If you designed, used, or have more info about this system,
please send us pictures or anything you might find useful.
I have a Cortex 2, built from old stock kit last year. It''s running complete with the FDC and dual 5.25" drives from a BBC computer. If you have the missing copies of the Cortex user group magazine please visit http://www.vintage-computer.com/vcforum/showthread.php?15580-Powertran-Cortex and let us know.
Friday 4th January 2013
Jim Hearne (UK)
The ETI article for the cortex can be found here ftp://whtech.com/Powertran$20Cortex also includes an emulator, Roms etc. Enjoy! Keith
Thursday 4th November 2010
HI, I still have my cortex stored in my loft in essex but at the moment it is not working, would love to get it up and going again.
Monday 31st May 2010
david loudfoot (uk)
BUILT IN LANGUAGE
Power Basic and simple assembler/disassember.
Full-strok keyboard with numeric keypad
TMS 9995 (16 bit)
3 MHz (12 MHz crystal)
40 x 25
256 x 192
built in speaker with primitive sound function
SIZE / WEIGHT
Serial RS-232C, Tape recorder port, optional Parallel printer card made by the Cortex User Group, Ebus extension bus that would take cards from the TI990 series minicomputer.
BUILT IN MEDIA
Optional 5.25'' FDD (worked off a TMS9909 FDC. The Basic included a 'Boot' command which would boot the disk.)
£249 + vat (later £199 + vat) for a kit of self assemby parts. Construction details in 'Electronics today international' magazine