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healy_yang
Visitor II
April 24, 2004
Question

Disable DDC SRAM

  • April 24, 2004
  • 2 replies
  • 667 views
Posted on April 24, 2004 at 10:16

Disable DDC SRAM

    This topic has been closed for replies.

    2 replies

    H
    healy_yangAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:00

    Hi,

    I try to disable the DDC SRAM on uPSD3234 by follwing code in STARTU32.A51

    DDCCON DATA 0D7H

    S1CON DATA 0D8H

    :

    MOV A, 0 ; Disable DDC and DDC XRAM out of addr space

    MOV DDCCON, A

    MOV S1CON, A ; Disable DDC I2C as well

    :

    But it seem that the DDC SRAM still conflict with our FLASH chip with address 0x00ff~0xffff.

    Can you give me any ideal about that?

    Thank for your help.

    With Regards.

    Healy

    S
    sjo
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:00

    The asm is incorrect, it should be mov A, #0

    Regards

    sjo
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