The 1500 I worked with at the University of Texas
School of Education was based
on an 1800 (which is of course the same architecture as the 1130, but in highboy
industrial cabinetry rather than a desk. Coursewriter II and APL\1500 for the
educational software, FORTRAN II and assembler for background tasks.
I think most were 1130 (1131 to be more precise) based, but a few were
indeed 1800. Not sure why - maybe larger installations?
--
Will