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