It's in the 1971 moto ttl data book page 37 same as the 7475
On 5/12/18 11:03 AM, Noel Chiappa via cctalk 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 >