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-rw-r--r--doc/_start_here.txt4
-rw-r--r--doc/csr.txt8
2 files changed, 11 insertions, 1 deletions
diff --git a/doc/_start_here.txt b/doc/_start_here.txt
index 8c00c25..416eab5 100644
--- a/doc/_start_here.txt
+++ b/doc/_start_here.txt
@@ -72,7 +72,9 @@ RVController is intended to be compliant with the following specifications:
* Zbkb: Extension for Bit-manipulation for Cryptography, Version 1.0.0
* Zbkx: Extension for Crossbar permutations, Version 1.0.0
* Zicfilp: Control Flow Integrity - Landing Pad
-* Xh3bextm: Hazard3 bit extract multiple
+* Xh3misa: Hazard3 ISA identification register, Version 1.0
+ - Note: Defined in the Hazard3 reference manual, available at https://github.com/Wren6991/Hazard3/releases/download/v1.1/hazard3.pdf
+* Xh3bextm: Hazard3 bit extract multiple, Version 1.0
- Note: Defined in the Hazard3 reference manual, available at https://github.com/Wren6991/Hazard3/releases/download/v1.1/hazard3.pdf
* Machine-Level ISA, Version 1.13
* "Smdbltrp" Double Trap Extension, Version 1.0
diff --git a/doc/csr.txt b/doc/csr.txt
index be4a547..fdd7939 100644
--- a/doc/csr.txt
+++ b/doc/csr.txt
@@ -30,6 +30,8 @@ The following standard CSRs are available:
* 0xf13: mimpid ("RVCo")
* 0xf14: mhartid (0)
+=========================================
+
The following custom CSRs are also available:
0x800 - Clock Configuration
@@ -56,6 +58,12 @@ 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.
+0xbf1 - h3.misa
+
+Stores enhanced ISA identification information, see the Hazard3 reference manual for more information: https://wren.wtf/hazard3/doc/#reg-h3.misa
+
+=========================================
+
Additionally, the mip and mie CSRs have some interrupts that are not yet implemented,
while some of the platform-use bits have been assigned to additional interrupts.