From 9e7d5f6e5e01b7473b84bc3449d7f8e0f78e7045 Mon Sep 17 00:00:00 2001
From: user <user@clank>
Date: Sat, 18 Jul 2026 20:41:27 +0200
Subject: term: 7-color terminal (per-glyph fg+bg) + ANSI escapes; colorize irc

Fano-plane palette scheme: the 7 colors map onto 7 CGB BG palettes so
any color pair shares one palette; a tile's palette is picked from the
set of colors its two cells need (tables generated by tools/gencolor.py).
Per cell a packed (bg<<4)|fg byte lives alongside the char shadow, and
the glyph blitter steers glyph/empty pixels to each cell's fg/bg color
slots via plane masks.

An ANSI-ish CSI parser (ESC [ .. m) drives it; usr/ansi.c demos it and
the irc client now renders hashed nick colors, status dimming and a
channel-activity bar.
---
 src/osk.asm | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/osk.asm')

diff --git a/src/osk.asm b/src/osk.asm
index f5d99ac..d5edad7 100644
--- a/src/osk.asm
+++ b/src/osk.asm
@@ -80,10 +80,16 @@ osk_init::
     ld [rBCPD], a
     ld [rBCPD], a               ; c1 = $0000 black
 
-    ; build the key tiles (no cursor underline)
+    ; build the key tiles (no cursor underline). Glyph pixels -> color-id 1
+    ; (palette slot 1: white normal / black inverted); empty pixels -> id 0.
     xor a
     ld [wCurMask], a
     ld [wOskBuild], a
+    ld [wFGP1], a
+    ld [wBGP0], a
+    ld [wBGP1], a
+    ld a, $FF
+    ld [wFGP0], a
 .build
     ld a, [wOskBuild]
     ld e, a
-- 
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