Tag: Psion organiser MkII XP

Psion organiser II XP

I’m so impressed with these Psion organisers from the 80s that I’ve now decided to go ahead and try to obtain some good examples of all the MkII models. I’ve recently posted about my CM version here: Psion organiser II CM but today I have obtained the next model from 1986 the XP version. You can find out more about the Psions I own on the main menu in the margin of this site.

With plastic caddy
Out of caddy
A couple of programs thrown in
Good condition
80’s tech in 2021

Above is a good video, using the XP in 2021

I’ve paid less than £20Gbp all in for this item and I think it’s a bargain personally. I’ve also obtained two programs that I’ll either keep or move on. There are some slight marks on the bezel but nothing too bad. I may be able to replace these parts with donations from some damaged sets I’m looking at. That’s a medium term plan, so there really is no urgency here. Let’s just make sure it’s running as well as it should do first.

I will be using these units to further learn the OPL programming language that they use.

As with the earlier CM model this unit also had the Y2K issue so I will have to run the TIMEINST program to ensure it updates the calendar accordingly.

The differences between these two units are very slight and it is basically around the available memory. Comparisons below.

  • The Cm – year 1986- Ram 8Kb- Rom 32Kb- Max datapack 64Kb
  • The XP – year 1986- Ram 16Kb- Rom 32Kb- Max datapack 2048Kb

CPU speed, clock speed and display are both exactly the same. It really is just an improvement in memory availability. Hence Spreadsheet programs could run with less of an issue on the XP units but not so on the CM units.

The Psion Organiser II XP model has a 6303 microprocessor with two-line LCD, two slots for memory cartridges and a connector for expansion. The keyboard is calculator-like with the keys arranged alphabetically, not in the Qwerty keyboard style. There is no off key the so the machine was switched off by a menu command. The case is also styled like a calculator, but it has a handy slide-on cover to keep the keyboard safe when the machine is not in use.