The Master 512 Forum was a series of articles published in Beebug magazine, and written by Robin Burton. The idea was that readers would write in with problems, questions, hints, etc. Quite a lot of the content in the earlier Forums was in response to such letters. As time went on the readers' letters became fewer, and Robin had simply to write many of the articles himself.
The first Forum appeared in Beebug Vol. 7 No. 3 – July 1988, and it was flagged up as an "occasional" series. In the end it appeared in every issue of the magazine except one (Vol. 7 No. 6) from that point until the magazine ceased publication in April 1994 with Vol. 12 No. 10.
Note that in addition to the Forum there were a few other items published in Beebug relevant to the Master 512.
Vol. 7 No. 6 – No 512 Forum
<I have tried to be faithful to the text of the Beebug articles as originally published, even though the information may now be out-of-date or irrelevant. The only significant alterations I have made have been to remove any personal addresses and phone numbers (including small commercial operations that may have been operating from private premises). I have also corrected a few small and obvious typographical errors, hyperlinked some references to other documents, and in a few clear cases noted other inaccuracies like this. Any discrepancies other than these are my error. – YP>