LSI ADM3A with an unusual keyboard

Oops, my bad: the ADM5 was hardwired as well. One comment (I found on Google) was, "at least you didn't have to install the upper/lower case kit." The reason I'm so certain the ADM-3a was not microprocessor based: once upon a time, my (then) girlfriend came home to tell me that she saw a dumpster in which some folks were dumping what looked like computer boards. As it turned out, they were throwing away various pieces/parts of ADM-3a's, including the circuit board that filled the entire base of the unit. The ICs on that board were SOCKETED! I pulled them all (bwah-hah-hah), and many are still in my collection of TTL parts. As it happened, ONE of those boards contained a lower-case-character ROM. Years later, when I acquired my PDP-11/34, part of the deal was to take ALL of the terminals he had with it, which included several ADM-3a's. I looked through my chip collection and rediscovered the lowercase ROM, which now graces one of my 3a's and makes it a lot easier to use with UNIX 6th Ed. (which is what I run on my /34). I really should dup it one of these days.... -- Ian ________________________________________ From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of Ian King [IanK at vulcan.com] Sent: Monday, July 06, 2009 9:14 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: RE: LSI ADM3A with an unusual keyboard ISTR the ADM5 was their first microprocessor-based product. The ADM-3a did have MSI serial components - as I recall, it was two separate chips for transmitter and receiver, but still single components for each rather than SSI (shift registers and clocks and such, like on an Omnibus M8650). But the bulk of it was SSI. -- isk ________________________________________ From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of Richard [legalize at xmission.com] Sent: Monday, July 06, 2009 8:03 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: LSI ADM3A with an unusual keyboard In article <FF6AB92D97A23A409701CDBF66F03FCD30CBA6EC at 505fuji>, Ian King <IanK at vulcan.com> writes: Its SSI logic? I thought it had a microprocessor in there. Did the ADM5 have a microprocessor? -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>