Can sscratchcswl be used as a standard CSR?
No. The fixed current Privileged manual specifies no standard semantics for this name; use only target-implementation documentation.
CSR Bit Fields
RISC-V sscratchcswl CSR Register
Address 0x149Privilege Not specified for this name by the current manualAccess Not specified / Not specifiedReserved, custom, or uncategorized CSRs
sscratchcswl at 0x149 is a historical compatibility entry; the fixed current RISC-V Privileged manual specifies no standard CSR semantics for this name.
bit 3 = only bit 3; bits 12..11 = bits 12 down to 11
MSBLSB
Field Map
Understand sscratchcswl By Bit Fields
0 key fields
Official Basis & Search Notes
sscratchcswl is retained only as a historical compatibility name; the fixed current Privileged manual specifies no standard CSR behavior for it.
The current manual's Supervisor CSR listing does not list this name as a standard CSR.
This page declares no fields, width, access behavior, or read/write side effects.
What To Check First When Reading This CSR
- - The fixed current Privileged manual specifies no standard read semantics for this name; consult target-implementation documentation before access.
Risk Checks Before Writing
- - This page declares no standard write semantics; do not treat a historical name or address range as write permission.
Put It Back Into A Real Flow
1
Recognize the name in old code or implementation documentation.
2
Consult target-implementation documentation to determine whether it exists and its complete semantics.
3
Do not make portable software depend on it when that documentation is unavailable.