uboot/doc/README.NDS32
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   1NDS32 is a new high-performance 32-bit RISC microprocessor core.
   2
   3http://www.andestech.com/
   4
   5AndeStar ISA
   6============
   7AndeStar is a patent-pending 16-bit/32-bit mixed-length instruction set to
   8achieve optimal system performance, code density, and power efficiency.
   9
  10It contains the following features:
  11 - Intermixable 32-bit and 16-bit instruction sets without the need for
  12   mode switch.
  13 - 16-bit instructions as a frequently used subset of 32-bit instructions.
  14 - RISC-style register-based instruction set.
  15 - 32 32-bit General Purpose Registers (GPR).
  16 - Upto 1024 User Special Registers (USR) for existing and extension
  17   instructions.
  18 - Rich load/store instructions for...
  19   - Single memory access with base address update.
  20   - Multiple aligned and unaligned memory accesses for memory copy and stack
  21     operations.
  22   - Data prefetch to improve data cache performance.
  23   - Non-bus locking synchronization instructions.
  24 - PC relative jump and PC read instructions for efficient position independent
  25   code.
  26 - Multiply-add and multiple-sub with 64-bit accumulator.
  27 - Instruction for efficient power management.
  28 - Bi-endian support.
  29 - Three instruction extension space for application acceleration:
  30   - Performance extension.
  31   - Andes future extensions (for floating-point, multimedia, etc.)
  32   - Customer extensions.
  33
  34AndesCore CPU
  35=============
  36Andes Technology has 4 families of CPU cores: N12, N10, N9, N8.
  37
  38For details about N12 CPU family, please check doc/README.N1213.
  39
  40The NDS32 ports of u-boot, the Linux kernel, the GNU toolchain and
  41other associated software are actively supported by Andes Technology Corporation.
  42