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- ;
- ; This program originally available on the Motorola DSP bulletin board.
- ; It is provided under a DISCLAIMER OF WARRANTY available from
- ; Motorola DSP Operation, 6501 Wm. Cannon Drive W., Austin, Tx., 78735.
- ;
- ; Last Update 15 Jul 87 Version 1.0
- ;
-
- iir1 macro
- iir1 ident 1,0
- ;
- ; IIR1 - Implements 2nd order IIR filter with only poles
- ;
- move x:(r0)+,x0 y:(r4)+,y0 ;1st state, b1
- mac x0,y0,a x:(r0),x1 y:(r4)-,y0
- macr x1,y0,a x0,x:(r0)-
- move a,x:(r0)
- endm
-