PDP 11/45 Display register.

Well, let's try to give an answer. The SWitch Register is what is says: *switch* register. So you can read the switches from it, but writing to it is no use. Don't shoot me if I am mistaken! From memory, the address is 777570. - Henk, PA8PDP. -----Original Message----- From: cctalk-bounces at classiccmp.org To: Classic computer list Sent: 5-4-2005 21:33 Subject: PDP 11/45 Display register. Hi, A quick question raised by my ongoing work.... Is it possible to write directly to the "display register" - the one accessed by one position of the data switch. I think it should be at memory location 777570, but I can't get data into it, either using deposit from the console, or moving data under program control. Have I got a fault, or am I doing something wrong? Thanks Jim. Please see our website the " Vintage Communication Pages" at WWW.G1JBG.CO.UK