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QRZ! Ham Radio 8
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QRZ Ham Radio Callsign Database - Volume 8.iso
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fir.asm
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Wrap
Assembly Source File
|
1991-11-26
|
546b
|
20 lines
;
; 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
;
fir macro ntaps
fir ident 1,0
;
; FIR - direct form FIR filter
;
; FIR filter macro
;
clr a x0,x:(r0)+ y:(r4)+,y0 ;save first state
rep #ntaps-1
mac x0,y0,a x:(r0)+,x0 y:(r4)+,y0
macr x0,y0,a (r0)-
endm