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authorTom Rini <trini@konsulko.com>2019-07-24 13:15:19 -0400
committerTom Rini <trini@konsulko.com>2019-07-24 13:15:19 -0400
commitef783259d6a558d31385039fa0def211fa7ad032 (patch)
treed2774a64f3551c31a55cc1efeaa3844f069af1d8 /doc/README.AX25
parentfe4243870df152f839f88e5aa355f53cfba0a866 (diff)
parent0694dd86756ac1b4986cc40f15a5b7b35745ac38 (diff)
Merge branch '2019-07-24-doc-html-cleanup'
- Convert our docs to Sphinx
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-AX25 is Andes CPU IP to adopt RISC-V architecture.
-
-Features
-========
-
-CPU Core
- - 5-stage in-order execution pipeline
- - Hardware Multiplier
- - radix-2/radix-4/radix-16/radix-256/fast
- - Hardware Divider
- - Optional branch prediction
- - Machine mode and optional user mode
- - Optional performance monitoring
-
-ISA
- - RV64I base integer instructions
- - RVC for 16-bit compressed instructions
- - RVM for multiplication and division instructions
-
-Memory subsystem
- - I & D local memory
- - Size: 4KB to 16MB
- - Memory subsyetem soft-error protection
- - Protection scheme: parity-checking or error-checking-and-correction (ECC)
- - Automatic hardware error correction
-
-Bus
- - Interface Protocol
- - Synchronous AHB (32-bit/64-bit data-width), or
- - Synchronous AXI4 (64-bit data-width)
-
-Power management
- - Wait for interrupt (WFI) mode
-
-Debug
- - Configurable number of breakpoints: 2/4/8
- - External Debug Module
- - AHB slave port
- - External JTAG debug transport module
-
-Platform Level Interrupt Controller (PLIC)
- - AHB slave port
- - Configurable number of interrupts: 1-1023
- - Configurable number of interrupt priorities: 3/7/15/63/127/255
- - Configurable number of targets: 1-16
- - Preempted interrupt priority stack