{___________________________________________________________________________
demo.h  This is the header file for the 21k EZlab demo programs.
____________________________________________________________________________}
#include    "def21020.h"
#define     PNTS        1024

#define     TRIGLEN     20000            {DAC trigger length in cycles}
#define     DACPER      600              {=30usec DAC sample period}
#define     TDLYLEN     10000

#define     FSCL        -30                 /* This is the FP conv. scaling */
#define     AOSCL        29                 /* Fix to float scaling (ifft)  */
#define     LGOFF       15.0                /* log2 offset (float)          */
#define     DRNG        100                 /* Dynamic Range in decibels    */
#define     SCLIP	0xe8		/*Clipping value for sprectral display*/

#define     JOYSCL      -28             /*Joy stick scaling for lin. FFT disp.*/

/* more prepoc. variables for intffir */
#define     TAPS        257                  /* Number of FIR taps, 2^x+1 < PNTS */
#define     LOGPNTS     10                   /* log2(PNTS)                  */
#define     SEG         (PNTS-TAPS+1)       /* Number of samples proc./FFT */
#define     UNITY       0xd0		    /* Unity gain level */
#define	    TAPSCL     	7		    /* Tap coeff. display coeff. */

{ configuration word for spectral demo}
#define     CNFG_SPEC   0x10000014

{ configuration word for ispec demo}
#define     CNFG_ISPEC  0x2000003f

{ configuration word for intffir demo}
#define     CNFG_FFIR   0x4000003f


{_________The constants below must be changed for different length FFTs______
N        = number of points in the FFT, must be a power of 2
STAGES   = log2(N)
BRMODIFY = bitrev(32 bit N/2)
IRE      = bitrev(32 bit addr of input real in dm), addr is 0,N,2N,3N,...
IREP1    = bitrev((32 bit addr of input real)+1), addr is 0,N,2N,3N,...

BRMODH   = bitrev(32-bit N/4)
VIRE     = bitrev(32-bit addr of refft in dm), addr is 0,N/2,N,3N/2,...
VORE     = bitrev(32-bit addr of real in dm), addr is 0,N/2,N,3N/2,...
____________________________________________________________________________}
#define N               PNTS
#define HN              N/2
#define STAGES          10       

{for rfft2}
#define BRMODIFY        0x00400000
#define IRE             0x00000000
#define IREP1           0x80000000

{for irfft2}
#define BRMODH          0x00800000
#define VIRE            0x00200000
#define VORE            0x00000000

{ This are the bit definitions of USTAT1}
#define     DEMO_3      0x80000000
#define     DEMO_2      0x40000000
#define     DEMO_1      0x20000000
#define     DEMO_0      0x10000000

#define     UM1         0x08000000          /* User mode bit 1 */
#define     FLIRQ       0x04000000          /* Flg0 and IRQ2 at the same time */
#define     IRQED       0x02000000          /* IRQ2 has been pressed   */
#define     OKND        0x01000000          /* O.K. to go to next demo */

#define     CDTH        0x00200000          /* cursor dither status bit      */
#define     LADC        0x00100000          /* last adc conv (a/b) indicator */

#define     INBF        0x00080000          /* In audio buffer full */
#define     INBH        0x00040000          /* In audio buffer half-full */
#define     OUTBF       0x00020000          /* Out audio buffer full */
#define     OUTBH       0x00010000          /* Out audio buffer half-full */

#define     ENDAB       0x00000020          /* Enable data output DAC B */
#define     ENDAA       0x00000010          /* Enable data output DAC A */

#define     ENIAR       0x00000008          /* Enable in audio data right */
#define     ENIAL       0x00000004          /* Enable in audio data left */
#define     ENOAR       0x00000002          /* Enable out audio data right */
#define     ENOAL       0x00000001          /* Enable out audio data left */