On Tue, Apr 16, 2019 at 10:49 AM Jon Elson via cctalk <cctalk@classiccmp.org> wrote: > On 04/15/2019 12:08 PM, Thomas Raguso via cctalk wrote: > > I am selling an Atex PDP-11/34. The computer has: J11 CPU, 11 MB RAM, 2 > > BA11-LE expansion chassis, a second backplane, an SMD disk controller and > > LAN hardware. > > > 11 MB ram on a PDP-11? Is that possible?
No. On VCFED, I saw a post that said there were 176 256Kbit chips on it. I work the math as: 11 chips == 256Kbytes (with ECC) 44 chips == 1MBytes (with ECC) 176 chips == 4MBytes (with ECC). I have no idea where 11MB came from. > Also, was the J11 used in the 11/34? Wasn't the /34 all TTL? The /34 KD11-E is a two-board set with an ALU implemented with 74181 chips. This J-11 board is definitely 3rd party and much later. -ethan