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Newsgroups: comp.lang.ada
Date: Wed, 22 Jan 2020 06:18:52 -0800 (PST)
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Subject: Re: Creating several types from a base type and conversion
From: Ken Roberts <alisonken1@gmail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:57919
Date: 2020-01-22T06:18:52-08:00
List-Id: <comp.lang.ada>

On Tuesday, January 21, 2020 at 5:08:25 PM UTC-8, Ken Roberts wrote:
> On Tuesday, January 21, 2020 at 3:06:55 PM UTC-8, Niklas Holsti wrote:
> > On 2020-01-21 23:35, Shark8 wrote:
> > > On Saturday, January 18, 2020 at 5:49:17 AM UTC-7, Ken Roberts wrote:

<snip>=20
> Node 1 : CP642 (unit A)
> Node 2 : CP642 (unit B)
> Node 3 : CP642 (unit C)
> Node 4 : RD231 (Magnetic tape unit)
> Node 5 : UGC13 (Teletypewriter)
> Node 6 : SYA4  (PPI display - radar repeaters w/symbology)

Oops - been a while.

Node 4 : RD243 (Magnetic tape unit)
Node 5 : RD231/UGC13 (Combined paper tape punch-reader/teletypewriter)

And to expand on SYA4:

Computer I/O channel -> RMU (refresh memory unit) -> up to 15 PPI display u=
nits

The original SYA4 PPI units could only display symbology as it was sent fro=
m the computer. The RMU was added so the computer could load symbols that w=
ere to be displayed long term into the RMU, then the RMU did the actual ref=
resh of the symbols without computer intervention.

The upgraded display suite was UYA4 and each console had it's own symbology=
 refresh memory (with a few enhancements) that utilized mostly the same sym=
bology as the SYA4 suite.