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  • Re: Deciding to bicycle

    From Louis Ohland@21:1/5 to Louis Ohland on Fri Jul 7 12:52:54 2023
    https://www.ardent-tool.com/tech/MCA_Data_Transfer_Procedures_Basic.html

    MCA - Basic Transfer Procedure
    Default Cycle (≥200 ns)
    Synchronous Extended Cycle (≥300 ns)
    Asynchronous Extended Cycle (≥300 ns)

    Louis Ohland wrote:
    Kevin Moonlight wrote:
    3.  what decides the  basic and  syncronous cycle times on a planar,

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Louis Ohland@21:1/5 to Kevin Moonlight on Fri Jul 7 12:40:32 2023
    From finger jujitsu, I'd think MCA will do Basic, synch, extended
    transfers based on the negotiation that the adapter does with the DMA
    [?] controller.

    It might be the only weg you'll get variances is on the built-in
    functions [like CD_CHRDY or whatever]. It might be the variances are
    hardwired into the adapter and planar/sysboard.

    You might not be able to break out of the system, but a deeper
    understanding will help you abuse the system...

    Kevin Moonlight wrote:
    3. what decides the basic and syncronous cycle times on a planar,

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Louis Ohland@21:1/5 to Louis Ohland on Fri Jul 7 12:53:42 2023
    Whether a default, a synchronous-extended, or an asynchronous-extended
    cycle is performed depends on how a slave uses CD CHRDY.

    A default cycle occurs when a slave does not drive CD CHRDY inactive.

    A synchronous-extended cycle occurs when a slave drives CD CHRDY
    inactive, then releases CD CHRDY synchronously within the specified time
    after the leading edge of -CMD. The slave provides the read data within
    the specified time from -CMD active.

    An asynchronous-extended cycle occurs when a slave drives the CD
    CHRDY inactive, then releases CD CHRDY asynchronously.


    Louis Ohland wrote:
    https://www.ardent-tool.com/tech/MCA_Data_Transfer_Procedures_Basic.html

    MCA - Basic Transfer Procedure
       Default Cycle (≥200 ns)
       Synchronous Extended Cycle (≥300 ns)
       Asynchronous Extended Cycle (≥300 ns)

    Louis Ohland wrote:
    Kevin Moonlight wrote:
    3.  what decides the  basic and  syncronous cycle times on a planar,

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)