Aaron Kulkis wrote: > Hans Witvliet wrote: >> On Fri, 2007-12-07 at 12:59 -0500, James Knott wrote: >>> The Data General Eclipse line had a feature called "Writable Control >>> Store", which could be used to add custom instructions to the CPU. The >>> VAX 11/780 had it's microcode loaded from floppy at boot, but I don't >>> recall if it was changeable in the same manner as the Eclipse WCS. >>> >> >> Floppy? >> It was a real huge 8" flop ... (still have them here) >> > > Holding all of about 50k or so? > > I remember seeing some of those in an office supply store > in Hafir-Al-Batin, Saudi Arabia back in 1992. > >> hw > > > IIRC, the ones in the VAX were about 128K, though some systems, with double sided, double density disks could do half a meg, though I recall some mention of 1 MB on a single 8" floppy.
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