# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1367271113 -7200
# Node ID 49d2d60054a169a0113d80bc0f87d9d9499be2d6
# Parent  c7970b37736f303c4989d02dde98a67202ededf3
Added some clarifications about the implementation of an expanded palette.

diff -r c7970b37736f -r 49d2d60054a1 Electron.txt
--- a/Electron.txt	Sun Apr 28 22:53:21 2013 +0200
+++ b/Electron.txt	Mon Apr 29 23:31:53 2013 +0200
@@ -63,7 +63,10 @@
 ------------------------------
 
 Perhaps the simplest improvement to the display capabilities would be to
-permit the RGB output levels to "float" between the current TTL high and low
-states, presumably enforced by various circuits. This would permit the choice
-of colours beyond the primary and secondary colour selection at a cost of some
-extra palette bits in the ULA and an adjustment to the board circuitry.
+permit the RGB output levels to hold intermediate values between the current
+high and low states, presumably enforced by various circuits. This would
+permit the choice of colours beyond the primary and secondary colour selection
+at a cost of some extra palette bits in the ULA and an adjustment to the board
+circuitry and would only benefit UHF and colour composite video displays, but
+the latter limitation might not be a significant issue for the majority of the
+intended audience.
diff -r c7970b37736f -r 49d2d60054a1 ULA.txt
--- a/ULA.txt	Sun Apr 28 22:53:21 2013 +0200
+++ b/ULA.txt	Mon Apr 29 23:31:53 2013 +0200
@@ -370,7 +370,10 @@
 blue outputs or a combined intensity output), another approach might involve
 some kind of modulation where an output value might be encoded in multiple
 pulses at a higher frequency than the pixel frequency. However, this would
-demand additional circuitry outside the ULA.
+demand additional circuitry outside the ULA, and component RGB monitors would
+probably not be able to take advantage of this feature; only UHF and composite
+video devices (the latter with the composite video colour support enabled on
+the Electron's circuit board) would potentially benefit.
 
 Flashing Colours
 ----------------