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-
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- {subhead} A short interview with Hal Greenlee (Nasa Retired){def}{p}
- Article by Joachim Thomas
- {left}
- {p} {p}
-
- Ever wonder if there's anyone out that uses Amigas besides Hollywood?
- Well, in my trvails I came across an interview with a retired NASA
- engineer that says it's Amigas that help keep the US space program
- going! Read on and you'll have something to tell all those boring PCers
- out there. The original article had photos of their amigas in action,
- but it's not possible to include them here. That aside, all credits from
- the original article remain intact...
- -Mark
- {p} {p}
- A SHORT INTERVIEW WITH HAL GREENLEE (NASA RETIRED)
- {p} {p}
- ABOUT: AMIGA CONTROLS LAUNCH TELEMETRY OPERATIONS AND REAL TIME DATA
- COMUNICATION MANAGMENT AT CAPE CANAVERAL
- {p} {p}
- [J.T.] Joachim Thomas - [H.G.] Hal Greenlee
- {p} {p}
- [J.T.] What other computer systems (if any) are at present used together
- with the Amigas at the telemetry center? (In the article you wrote that
- the only PC, time ago, was replaced by an Amiga and the software
- recompiled. May be today the PC would have been more efficient. Or not?
- Are Amigas more relyable?
- {p} {p}
- [H.G.] The telemetry center uses only Amigas to process data for display.
- It also uses them to control the patching of DAC's (digital-to-analog
- converters) to the 500 or so channels on strip chart recorders.
- {p} {p}
- The Pentium or G3 might be more powerful, but the AmigaDOS multi-tasking
- system and the use of 68K code (familiar to and liked by our
- programmers) were important reasons the Amigas were favored originally.
- Neither Windows nor Mac OS are or were considered suitable. Linux or
- some form of UNIX on one of those CPU's might be better today. The
- Amigas have been very reliable.
- {p} {p}
- [J.T.] How many Amigas are still there? Are there other departments at
- NASA also using (or that used in the past) Amigas, as far as you know?
- {p} {p}
- [H.G.] There were eight main system Amigas at my last count; four
- primary and four backup. Then there were four or five for DAC control,
- and four in the programming room. Plus about six or seven in remote
- locations, and another four or five spares on the shelf.
- {p} {p}
- [J.T.] What has changed at Cape Canaveral's telemetry labs computer
- systems from the time you wrote you article? Some more Amigas or some
- other machines replacing Amigas?
- {p} {p}
- [H.G.] Not too much has changed since I wrote the article; another
- couple of remotes; addition of PPC card to one computer, and several
- more PPC cards have been purchased. Still no code written for PPC,
- however. New, improved I/O cards. Minor things I may not be aware of.
- Dave Brown, the principle programmer, retired over a year ago, and the
- other two have been kept very busy to keep up with the workload. Little
- has been done on conversion to Pentium PC operation.
- {p} {p}
- [J.T.] Are there also other important launch sites of NASA (managed from
- elsewhere) using different equipment, excluding the manned missions,
- like shuttle? (or maybe using a similar computer network?)
- {p} {p}
- [H.G.] There are only the Western Test Range and Wallops Island launch
- sites, aside from the Cape. We have a smaller version of the Cape Amiga
- systems at the WTR in California. We have no connection with Wallops
- (sounding rockets), and know of no certain use of Amigas at other
- (non-launch) NASA centers, except at Lewis Research Center (Cleveland),
- where the Atlas-Centaur offices have a system provided by us.
- {p} {p}
- [J.T.] You wrote that, in the beginning, a lot of Hardware development
- has been done also by NASA engineers, collaborating with third party
- developers. Any recent development/project? Are they at the present
- collaborating with anyone developing Hardware for the Amiga? Any
- interest for new developments like G3/G4 Boards and possibilities in
- collaborating with existing Hardware teams?
- {p} {p}
- [H.G.] Our hardware development was not extensive; the main things
- were I/O cards, to get data into and out of the Amigas from our data
- bus. These have been improved several times. I came up with a SCSI
- solution for our earliest systems, based on work by an ex-Byte-by-Byte
- engineer, and we may have had some of the earliest Amigas running with
- SCSI drives back in 1987. Also, we used Bernoulli cartridge drives from
- early days, soon after we had SCSI working.
- {p} {p}
- There are no present or contemplated development projects with 3rd parties.
- {p} {p}
- [J.T.] Never had contacts with Amiga Inc? Does AInc know about
- NASA+Amiga? Any interest on any side?
- {p} {p}
- [H.G.] AI does know about us; they like to bring it up in the right
- places.
- {p} {p}
- When Commodore was alive, I served as Commercial Developer and attended
- all DevCons; I developed as many contacts with C= and 3rd party
- companies as I could. When I retired, at the same time Commodore went
- down, that all stopped. Everything since then has been by email,
- newsgroups, or my attendance at shows and bringing back info.
- {p} {p}
- [J.T.] Is there any Web Site/Page about the telemetry center anywhere
- in NASA's Web Server Network, referencing also the Amiga systems? I
- know once there was your Space Coast Amiga Group site (I can't find it
- anymore...:-( ) was this site related with Amiga's involvement in NASA?
- {p} {p}
- [H.G.] There is no web page specifically about Hangar AE and Amigas.
- KSC pages do mention our operation in general terms, as I recall.
- {p} {p}
- [J.T.] What are you doing know, as a NASA retired ?
- {p} {p}
- Are you still informed about what is going on in the Amiga scene
- (including Harware developments)? Do you usually read Magazines and/or
- online-magazines? Which, of both, are your favourites?
- {p} {p}
- [H.G.] I have been an Amiga dealer since November 1994 (seven months
- after retiring), and have continued to go to shows in Germany, Canada,
- and St. Louis, as well as reading the newsgroups daily. My company is
- HardDrivers Co., and I specialize in second-hand systems and parts.
- We have sold almost half a million dollars in Amiga equipment thus far.
- {p} {p}
- That's all I have time for at present; leave for St. Louis on Thursday.
- {p} {p}
- HAL
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- Credits:{p}
- Thanks go not only to Hal Greenlee but also to Bob Castro of Amiga
- Atlanta for the kindness in allowing me to use some of his photos, (see
- his article), to Gary Jones at NASA, to A. Friscia at Boeing Aerospace
- and to Mike Ellenberg.
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- ©1999 Joachim Thomas - AmiWorld On-Line{p}
- Bob Castro (Amiga Atlanta)
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- Translator: Joachim Thomas - Proofreader: Ciro Scognamiglio{p}
- ATO - Amiga Translators Organization