And of course I have more Imp for the pdp-11 than you can shake a stick at. We also programmed ours in POP2 and LOGO but don't have any of that code remaining. Maybe some Fortran that was used for graphics but not very interesting. But on the Imp side we have compilers, editors, and entire operating systems... Graham PS To anyone who happened to notice that the Edinburgh Computer History site was down for a month - we had a hard drive failure, but all (well, mostly all) has now been restored.