6 Feb
2019
6 Feb
'19
6:32 p.m.
On 02/06/2019 05:39 PM, Fritz Mueller via cctalk wrote:
Yup, page 6, a 555 RC refresh timer!
Jon
On Feb 6,
2019, at 2:24 PM, Brent Hilpert via cctalk <cctalk at classiccmp.org> wrote:
Is the schematic available for the memory board at-issue?
Curious myself to see what approach for refresh DEC used.
Yes, here:
http://bitsavers.trailing-edge.com/pdf/dec/pdp11/memory/MP00672_MS11L_engDr…
There is also a technical manual adjacent, with circuit descriptions.
I will scope this up tonight and take a look!