From 1feb4eefe87b555a64d51e08eca7315b30521345 Mon Sep 17 00:00:00 2001 From: cheapie Date: Sat, 10 Oct 2026 14:33:20 -0500 Subject: Add Xh3misa --- doc/_start_here.txt | 4 +++- doc/csr.txt | 8 ++++++++ 2 files changed, 11 insertions(+), 1 deletion(-) (limited to 'doc') 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. -- cgit v1.2.3