> On May 12, 2018, at 1:03 PM, Noel Chiappa via cctalk <cctalk@classiccmp.org> > wrote: > > Hey, all, the RK11-D contoller for the PDP-11 uses Motorola 4015 MSI chips on > one of the boards (M7254), but I can't find out anything about them. Google > didn't turn anything up, and the appendix in the RK11-D Maintenance Manual > that has info about 'all' the MSI chips used in the RK11-D doesn't have this > one. It appears to be a quad flop - anyone have more info? Thanks! > > Noel
MC4015 - TTL quad type d latch(flip flop) See Section 11 in http://bitsavers.trailing-edge.com/components/motorola/_dataBooks/1971_Motorola_TTL_Integrated_Circuits_Data_Book.pdf Jerry