[Efi332] Question regarding PMMX

[Paul Helmuth]

Jeff,

Thanks for the additional info. Very useful, especially the part about re-syncing.

It seems that those TPU notes describe a different emulation mask from the one that I found in the archive. The code that I am working with was under 
ftp://ftp.diy-efi.org/pub/efi332/tpu/. The code under this directory must have been an earlier snapshot as it doesn't contain the SM, ITC, and RWTPIN referenced in the TPU Notes, and it does contain PSP3 (along with LPWM2, and PTA). At least that is what it looks like if you reference the "main8.asc" (TPUMASM build file).

Do you know if there is a set of code archived that matches the description in the TPU Notes page (are you using something close to this)?

I looked through the "pub" stuff and didn't find it. I don't seem to have access to "incoming" and don't see it in "uploads".

Thanks again,
-Paul


  ----- Original Message ----- 
  From: BowTieVette at aol.com 
  To: efi332 at diy-efi.org 
  Sent: Sunday, June 12, 2005 7:36 AM
  Subject: Re: [Efi332] Question regarding PMMX


  Paul,
  There is nothing on this issue (I don't use the cam synch feature) but there are some other errata and notes on the 58XX functions here that you may want to be aware of:

  http://efi332.sourceforge.net/TPU.htm

  perhaps your notes should go here.. 
  jc


  In a message dated 6/12/2005 2:49:40 AM Eastern Standard Time, PaulHelmuth at SprintMail.com writes:
    I found the problem.

    While the documentation that I have for the PMMX function indicates a HSRR value of b01 for a CAM Sync request, the micro-code for the PMMX function (doc and code from the FTP archive) actually recognizes b10 as a CAM sync request.

    This little tid bit should be helpful to anyone writing their own source.

    Also, it would be a good idea to add a note reflecting this change in the TPU function doc (though I don't know who would do that).

    -Paul
      ----- Original Message ----- 
      From: Paul Helmuth 
      To: efi332 at diy-efi.org 
      Sent: Saturday, June 11, 2005 10:12 PM
      Subject: [Efi332] Question regarding PMMX


      All,

      Are there any particular "procedural requirements" for sending a CAM Synch request (HSRR = 1) to the PMMX function? (like disabling all linked channels, etc.)

      The reason that I ask is because I am testing my CAM Synch logic, and when I set the associated HSRR bits to b01, everything on the TPU stops. The only requirement that I can find in the documentation that I have is that the CAM Synch request should be made when PMMX is in the synchronized state (which it is at the point that I am making the request).

      Any ideas?

      -Paul



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