From f8cc0d73afe12cc1c8dd1600a28ff4634decf617 Mon Sep 17 00:00:00 2001
From: cheapie <cheapiephp@gmail.com>
Date: Sun, 8 Nov 2026 07:38:17 -0600
Subject: Add Smrnmi

---
 doc/csr.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'doc/csr.txt')

diff --git a/doc/csr.txt b/doc/csr.txt
index 2e88f67..cb129b2 100644
--- a/doc/csr.txt
+++ b/doc/csr.txt
@@ -21,6 +21,10 @@ The following standard CSRs are available:
 * 0x34b: mtval2
 * 0x721: mcyclecfgh
 * 0x722: minstretcfgh
+* 0x740: mnscratch
+* 0x741: mnepc
+* 0x742: mncause
+* 0x744: mnstatus
 * 0x747: mseccfg
 * 0xb00: mcycle
 * 0xb02: minstret
@@ -76,6 +80,10 @@ the Address field selects the base address of the 256-byte MMIO region.
 When set to 0x00000000, MMIO is disabled.
 See mmio.txt for MMIO region contents.
 
+0xbc0 - mnvec (RNMI Handler Address)
+
+Contains the address of the RNMI handler (see Smrnmi extension). Default is 0x8000.
+
 0xbf1 - h3.misa
 
 Stores enhanced ISA identification information, see the Hazard3 reference manual for more information: https://wren.wtf/hazard3/doc/#reg-h3.misa
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