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Gowin_PicoRV32 SDK Release Note File
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Release Note
  Download from https://www.gowinsemi.com/en/
    * Gowin_PicoRV32 Software and Hardware Reference Design Release Note.pdf
  Download from http://www.gowinsemi.com.cn/
    * Gowin_PicoRV32软件和硬件参考设计发布说明.pdf
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Version 1.0
  (1) Initial version.
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Version 1.1
  (1) Support Wishbone GPIO;
  (2) Support Open AHB Interface;
  (3) Support ADV SPI-Flash Memory read/write/erase;
  (4) Support MCU boot and run in external Flash;
  (5) Support Trap Stack Overflow and Hardware Stack Protection.
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Version 1.2
  (1) Support debug function;
  (2) Enhance interrupt handler function.
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Version 1.2.1
  (1) Remove synthesis tool "SynplifyPro";
  (2) Update FPGA IDE.
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Version 1.2.2
  (1) Update the register memory mapping address for Simple UART;
  (2) Update the register definitions for I2C Master and GPIO;
  (3) Update the driver definitions for SPI-Flash;
  (4) Perfect the interrupt handler functions;
  (5) Update the software reference design for MCU;
  (6) Optimize the configurations for IDE;
  (7) Perfect the debug flow for IDE;
  (8) Update the range of ITCM and DTCM size for GW2AN-9X/GW2AN-18X;
  (9) Add the reference design for makehex and mergebin. 
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Version 1.3
  (1) Support Arora-V series FPGA.
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Version 1.4
  (1) Support GW5ART-15A and GW5AT-60A;
  (2) Support GW2AN-18X(9X) series for mergebin tool.
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Version 1.5
  (1) Update tool "merge_bit", supports Arora-V series devices;
  (2) Update reference design.
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Version 1.6
  (1) Update reference design for GMD 2025.01 version;
  (2) Add reference design for QEMU debugging;
  (3) Add new board reference design.
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Version 1.7
  (1) Fixed the bug of interrupt return in "start.S".
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