add first update, "why libre"

diff --git a/updates/001_2018nov28_why_a_libre_soc.mdwn b/updates/001_2018nov28_why_a_libre_soc.mdwn
index 620998d40f0deb8468627c96519575d948d053d9..fcc8dfc854931e4006436a2f84bd684747c8b395 100644 (file)
--- a/updates/001_2018nov28_why_a_libre_soc.mdwn
+++ b/updates/001_2018nov28_why_a_libre_soc.mdwn
@@ -62,7 +62,10 @@ you can mess about.
 All of this is because these are *integrated* processors.  There is no
 separate VPU: it's on-board.  There is no separate GPU: it's on-board.
 There is no separate "Northbridge" or "Southbridge" IC: it's on-board,
 All of this is because these are *integrated* processors.  There is no
 separate VPU: it's on-board.  There is no separate GPU: it's on-board.
 There is no separate "Northbridge" or "Southbridge" IC: it's on-board,

-all on the same die as the actual processor.  One single mistake and
+all on the same die as the actual processor, as a way to save both on
+space (think mobile phones) and power (driving external pins uses a huge
+amount of power, which an "embedded" all-in-one design does not have).
+The down-side of this all-in-one approach: one single mistake and

 the entire chip, with all the investment up to that point, is junk.
 
 And the problem is compounded by the fact that Foundries themselves make money
 the entire chip, with all the investment up to that point, is junk.
 
 And the problem is compounded by the fact that Foundries themselves make money