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Avalon Hill's Telengard for Z-90 or H/Z-100 with CP/M-85 and MBASIC: A casual tale of making it work in photos and videos

Telengard (Z-90/H/Z-100 version)Telengard (Z-90/H/Z-100 version)This right-after-the-fact casual blog posting will be about the rarest known version of Telengard, one that has not previously been documented in otherwise exhaustive historical accounts, so bear with me a bit as I set the scene... Since I lack any real electrical engineering skills, I recently sold off the non-working portions of my Otrona and Heathkit collections. Both collections went to fellow collectors who should be able to get the various systems working. While it was difficult to part with even those non-working portions of my 430+ system videogame and computer collection, this will give me more room and time to focus on all of the items that do work, and at least shows that psychologically I'll be able to part with more redundant and/or non-working portions of my collection going forward. One item in those groupings that I didn't sell off was my Zenith Z-100 all-in-one, which is the pre-assembled version of the Heathkit H-100, able to run Heathkit-branded versions of CP/M and MS-DOS thanks to its dual processors. As you may or may not recall, I was trying to get my low profile (same system, no built-in monitor) to run way back when. Long story short, among many other hurdles and much fact finding, and after acquiring an unnecessary replacement power supply and a necessary replacement disk controller board, it had a memory error on boot-up. So, I sold it along with various other Heathkit items. However, when I was going through my saga of acquiring those replacement parts, I was able to acquire a working all-in-one version, the Z-100. Now, I obviously love old technology, but truth be told, I was most interested in running the aforementioned rare versions of the official Avalon Hill games on the system. Interestingly, these ports run on the Heathkit/Zenith Z-90 or H/Z-100, as long as they're running CP/M-85 and MBASIC. Now, I did not have a copy of CP/M-85, but I was able to acquire a replacement set (among other disks) from a gentleman who provides that service for a modest fee. Unfortunately, the Avalon Hill games require MBASIC, which was NOT included by default with the Heathkit/Zenith systems apparently. Luckily, a gentleman from the SEBHC mailing list was able to come through with a copy for me. Here is what went down, told casually, as it happened a little while ago, complete with equally casual photos and videos (by the way, check out Matt Barton's old interview with the late great author of Telengard, Daniel M. Lawrence, here):

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