> On Jan 17, 2018, at 3:58 PM, Christian Kennedy via cctalk > <cctalk@classiccmp.org> wrote: > > > > On 1/17/18 12:24 PM, Toby Thain via cctalk wrote: > >> It seems to be a core memory stack? But of what type? CDC? > > Almost certainly a 6000-series core memory "block" from a PP.
6000 series central memory uses the same memory blocks, in groups of 5 to make up 60 bit words, 4kW per bank, 32 banks in a fully loaded 6600 (128 kW). paul