changes.txt

来自「51代码综合,ISP,用于8051单片机应用编成」· 文本 代码 · 共 23 行

CHANGES - bootload.hex; Updated: 06 Oct 2000

               
ATMEL - Wireless and Microcontrollers 2000


CHANGES
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Rev 2.4 :
  - Autobaud process improvement
  - Troubles fixes from Rev 2.1:
       T01: ISP command Read Data
       Description: In response to an ISP command Read Data, the bootloader sends the last data
       frame with stuffing bytes (FFh) to keep 16-byte frame length.

       T02: SBV and BSB protection in ISP mode
       Description SBV and BSB modification are possible regardless of security level settings (SSB).

       T03: DISPLAY DEVICE DATA command cannot read one single byte
       Description If DISPLAY DEVICE DATA command is called with end address equal to start
       address, the bootloader enters into a never ending loop.