Memory Map - TCS3 used of RAM for the PMAC


1. PMAC DSP RAM usage - This section documents the non-standard 
   use of DSP RAM.

We will used the memory for Motor 30-32 for scratch area or variable
stoage. This section documents their use

   Motor 30 $000f00-$000f7f - general purpose
   Motor 31 $000f80-$000fff - motor 1 extra space
   Motor 32 $001000-$00107f - motor 2 extra space

   Motor 1
   ---------------------------------------------------------------
             y:$000f80 - plc0's m1 command value. I102 = $0f80
             y:$000f81 \ 2 consecutive Y addresses (y:$f81,$f82)
             y:$000f82 /    are needed to hold the APE value for '$*'
      I3160  y:$000f8f - fake ADC (bias value) for ECT for TAC#1

   Motor 2
   ---------------------------------------------------------------
             y:$001000 - plc0's m2 commanded value. I202 = $1000
             y:$001001 \ 2 consecutive Y addresses (y:$1001,$1002)
             y:$001002 /    are needed to hold the APE value for '$*'
      I3260  y:$00100f - fake ADC (bias value) for ECT for TAC#2

2. PMAC DPR usage - This section documents used of DPR.

   2.x Open Buffer.

      The following is reserved for open buffer memory:

                   PC_Addr  PC_nbytes  DSP_Addr DSP_nwords
      OpenBuffer   0x3450   0x0bb0     $60d14   0x2ec

      The table documents the used of  open buffer memory:

      Desc         PC_Addr  PC_nbytes  DSP_Addr DSP_nwords  Notes
      -----------  ------   ---------  -------  ---------  ---------------
      plc0         0x3450   10*4=40     $60d14  10  (0xA)
      pvt_ha_data  0x3490   26*4=104    $60d24  26 (0x1a)  0x10 dsp addrs from plc0
      pvt_dec_data 0x3510   26*4=104    $60d44  26 (0x1a)  0x20 dsp addrs from pvt_ha_data

      format:
         struct pm_vb_plc0_raw_t descriptions DPR for plc0.

         struct pm_vb_pvt_raw_t describes DPR for pvt_ha_data, and pvt_dec_data.