From a919b79a1da201b9e7b4a70da45c2985bd2ea8f0 Mon Sep 17 00:00:00 2001
From: cheapie <cheapiephp@gmail.com>
Date: Sun, 7 Jun 2026 11:33:07 -0500
Subject: Convert digital sign to use a blinky plant for timing

---
 assembly/digitalsign/digitalsign.S | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

(limited to 'assembly/digitalsign/digitalsign.S')

diff --git a/assembly/digitalsign/digitalsign.S b/assembly/digitalsign/digitalsign.S
index c5e5468..2755fd9 100644
--- a/assembly/digitalsign/digitalsign.S
+++ b/assembly/digitalsign/digitalsign.S
@@ -1,3 +1,7 @@
+li s0,0xffff0000
+csrw 0x801,s0
+sb zero,0(s0)
+
 start:
 call blankall
 pause
@@ -58,14 +62,8 @@ ecall
 ret
 
 sleep:
-rdtime t0
-addi t0,t0,4
-sleep_loop:
-rdtime t1
-csrw 0x800,1 # Lightweight mode on
-pause
-csrw 0x800,0 # Lightweight mode off
-bltu t1,t0,sleep_loop
+lr.w zero,0(s0)
+wrs.nto
 ret
 
 channel1: .asciz "1"
-- 
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