clr     r28
	clr 	r29				
	clr	r30	
        ldi     r31,4           ; base of tables
		  
	add	r28,r24			
LOOP1: 	adc	r29,r25		; 1
	adc	r30,r26  	; 1
	bst     r29,6           ; 1 get bit 6
        bld     r31,0           ; 1 select bank
	bst     r29,7           ; 1 get bit 7
        bld     r31,1           ; 1 finish highZ
      	lpm     r0,z		; 3
	out	PORTD,r0	; 1
	add	r28,r24		; 1
	adc	r29,r25		; 1	
	adc	r30,r26		; 1
	bst     r29,6           ; 1 get bit 6
        bld     r31,0           ; 1 select bank
	bst     r29,7           ; 1 get bit 7
        bld     r31,1           ; f inish highZ
      	lpm     r0,z		; 3
	add	r28,r24		; 1 timeing
	out	PORTD,r0	; 1
	rjmp	LOOP1		; 2 => 24 / 2 = 12 cycles


;******************************************************************************
; data tables
;******************************************************************************

	; force table to begin at 256 byte boundary

	.org 0x200

sine4x256x8:		
; even
.db 128,131,134,137,140,143,146,149,153,156,159,162,165,168,171,174
.db 177,179,182,185,188,191,193,196,199,201,204,206,209,211,214,216
.db 218,220,222,225,227,228,230,232,234,236,237,239,240,242,243,245
.db 246,247,248,249,250,251,252,252,253,254,254,255,255,255,255,255
.db 255,255,255,255,255,255,254,254,253,252,252,251,250,249,248,247
.db 246,244,243,242,240,239,237,235,234,232,230,228,226,224,222,220
.db 218,216,213,211,208,206,203,201,198,196,193,190,188,185,182,179
.db 176,173,170,167,164,161,158,155,152,149,146,143,140,136,133,130
.db 127,124,121,118,114,111,108,105,102,99,96,93,90,87,84,81
.db 78,75,72,69,67,64,61,59,56,53,51,48,46,43,41,39
.db 37,34,32,30,28,26,24,23,21,19,17,16,14,13,12,10
.db 9,8,7,6,5,4,3,2,2,1,1,0,0,0,0,0
.db 0,0,0,0,0,1,1,2,2,3,4,4,5,6,7,8
.db 10,11,12,14,15,17,18,20,22,23,25,27,29,31,33,35
.db 38,40,42,45,47,49,52,54,57,60,62,65,68,71,74,76
.db 79,82,85,88,91,94,97,100,103,106,110,113,116,119,122,125
; + 1/4
.db 128,131,134,137,141,144,147,150,153,156,159,162,165,168,171,174
.db 177,180,183,186,188,191,194,197,199,202,204,207,209,212,214,216
.db 218,221,223,225,227,229,231,233,234,236,238,239,241,242,244,245
.db 246,247,248,249,250,251,252,253,253,254,254,255,255,255,255,255
.db 255,255,255,255,255,254,254,253,253,252,251,251,250,249,248,247
.db 245,244,243,241,240,238,237,235,233,232,230,228,226,224,222,220
.db 217,215,213,210,208,206,203,200,198,195,193,190,187,184,181,178
.db 176,173,170,167,164,161,158,155,152,148,145,142,139,136,133,130
.db 126,123,120,117,114,111,108,105,102,98,95,92,89,86,83,80
.db 78,75,72,69,66,63,61,58,55,53,50,48,45,43,41,38
.db 36,34,32,30,28,26,24,22,20,19,17,16,14,13,11,10
.db 9,8,7,6,5,4,3,2,2,1,1,0,0,0,0,0
.db 0,0,0,0,0,1,1,2,2,3,4,4,5,6,7,9
.db 10,11,12,14,15,17,18,20,22,24,25,27,29,31,34,36
.db 38,40,43,45,47,50,52,55,58,60,63,66,68,71,74,77
.db 80,83,86,89,92,95,98,101,104,107,110,113,116,120,123,126
; + 1/2
.db 129,132,135,138,141,144,147,151,154,157,160,163,166,169,172,175
.db 178,180,183,186,189,192,194,197,200,202,205,207,210,212,214,217
.db 219,221,223,225,227,229,231,233,235,236,238,239,241,242,244,245
.db 246,247,248,249,250,251,252,253,253,254,254,255,255,255,255,255
.db 255,255,255,255,255,254,254,253,253,252,251,250,250,249,248,246
.db 245,244,243,241,240,238,237,235,233,231,229,228,226,223,221,219
.db 217,215,212,210,208,205,203,200,197,195,192,189,187,184,181,178
.db 175,172,169,166,163,160,157,154,151,148,145,142,138,135,132,129
.db 126,123,120,117,113,110,107,104,101,98,95,92,89,86,83,80
.db 77,74,71,68,66,63,60,58,55,52,50,47,45,43,40,38
.db 36,34,32,29,27,26,24,22,20,18,17,15,14,12,11,10
.db 9,7,6,5,5,4,3,2,2,1,1,0,0,0,0,0
.db 0,0,0,0,0,1,1,2,2,3,4,5,6,7,8,9
.db 10,11,13,14,16,17,19,20,22,24,26,28,30,32,34,36
.db 38,41,43,45,48,50,53,55,58,61,63,66,69,72,75,77
.db 80,83,86,89,92,95,98,101,104,108,111,114,117,120,123,126
; + 3/4
.db 129,132,135,139,142,145,148,151,154,157,160,163,166,169,172,175
.db 178,181,184,187,189,192,195,197,200,203,205,208,210,212,215,217
.db 219,221,224,226,228,230,231,233,235,237,238,240,241,243,244,245
.db 246,248,249,250,251,251,252,253,253,254,254,255,255,255,255,255
.db 255,255,255,255,255,254,254,253,253,252,251,250,249,248,247,246
.db 245,244,242,241,239,238,236,235,233,231,229,227,225,223,221,219
.db 217,214,212,210,207,205,202,200,197,194,192,189,186,183,180,177
.db 175,172,169,166,163,160,157,153,150,147,144,141,138,135,132,129
.db 125,122,119,116,113,110,107,103,100,97,94,91,88,85,82,79
.db 77,74,71,68,65,63,60,57,55,52,49,47,45,42,40,38
.db 35,33,31,29,27,25,23,22,20,18,17,15,14,12,11,10
.db 8,7,6,5,4,4,3,2,2,1,1,0,0,0,0,0
.db 0,0,0,0,0,1,1,2,2,3,4,5,6,7,8,9
.db 10,11,13,14,16,17,19,21,22,24,26,28,30,32,34,37
.db 39,41,43,46,48,51,53,56,58,61,64,67,69,72,75,78
.db 81,84,87,90,93,96,99,102,105,108,111,114,118,121,124,127