# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1336001326 -7200
# Node ID f3f4e632c631f764f18942efab37502d6b5cf642
# Parent  316b8e54c28b1c2ea63b3b98af281fb4ba771750
Added display circuitry note.

diff -r 316b8e54c28b -r f3f4e632c631 Electron.txt
--- a/Electron.txt	Sun Mar 04 01:22:28 2012 +0100
+++ b/Electron.txt	Thu May 03 01:28:46 2012 +0200
@@ -58,3 +58,12 @@
 access four memory chips at once to provide each byte, and it is therefore not
 possible to just "borrow" one of the chips in order to isolate 8K of RAM for
 direct access by the CPU.
+
+Improving Display Capabilities
+------------------------------
+
+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.