-------- Original Message -------- Subject: Re: ADM-3A Lower case ROM issue From: "Ian S. King" Date: Wed, December 14, 2016 1:30 am To: "General Discussion: On-Topic and Off-Topic Posts" <[email protected]>
Take a look at the silk screen on the board - ISTR there's another chip that needs to be added, some simple TTL logic. I converted mine several years ago without problems - but that was with the original ROM. -- Ian S. King, MSIS, MSCS, Ph.D. Candidate -- Just as a follow-up - I got the two RAM ICs that were missing (2102 1K RAM), and installed those along with the lower-case ROM, and everything now works great. Thanks everyone for your expertise and tips! Steve
