Alien 8: Data at B51D

The last 26 bytes are not notes. The first 18 are code that nothing reaches -- no instruction or table holds an address in it, and no session ran it: LD A,(TURNS); AND 7; LD L,A; LD H,0; LD BC, the address of the eight bytes after it; ADD HL,BC; LD B,(HL); LD C,4; JP to BEEP (in FOOTSTEP) -- four waves at a pitch from those eight bytes, chosen by the low three bits of the turn counter. The last eight are that table of half-wave counts. It is Knight Lore's blip for its moveable block, byte for byte apart from its three addresses (the turn counter, the table and BEEP), with the same eight pitches -- compared against Knight Lore's loaded snapshot; stage 2 had searched and missed it because the addresses differ.

Indexed by the low six bits of a note byte (PLAY_NOTE): the first two bytes are the B and C counts that time each half-wave, the third how many waves make one unit of length. Row 0 stands for a rest and is never read. The same 183 bytes as Knight Lore's and Pentagram's note tables (compared byte for byte), and so the same scale: a semitone a row for five octaves, about G#1 at row 1 and A4 (440Hz) at row 38 by Pentagram's working, with row 18 a copy of row 17's pitch where C#3 should be. The tunes here use rows 23 to 47 only.
NOTES	B51D	DEFB $00,$00,$00	Rows 0 to 60
	B520	DEFB $F4,$0A,$08
	B523	DEFB $65,$0A,$09
	B526	DEFB $DE,$09,$09
	B529	DEFB $5E,$09,$0A
	B52C	DEFB $E7,$08,$0A
	B52F	DEFB $75,$08,$0B
	B532	DEFB $0A,$08,$0C
	B535	DEFB $A5,$07,$0C
	B538	DEFB $45,$07,$0D
	B53B	DEFB $EB,$06,$0E
	B53E	DEFB $96,$06,$0F
	B541	DEFB $46,$06,$0F
	B544	DEFB $FA,$05,$10
	B547	DEFB $B3,$05,$11
	B54A	DEFB $6F,$05,$12
	B54D	DEFB $2F,$05,$13
	B550	DEFB $F3,$04,$15
	B553	DEFB $F3,$04,$16
	B556	DEFB $85,$04,$17
	B559	DEFB $52,$04,$19
	B55C	DEFB $23,$04,$1A
	B55F	DEFB $F6,$03,$1C
	B562	DEFB $CB,$03,$1D
	B565	DEFB $A3,$03,$1F
	B568	DEFB $7D,$03,$21
	B56B	DEFB $59,$03,$23
	B56E	DEFB $38,$03,$25
	B571	DEFB $18,$03,$27
	B574	DEFB $FA,$02,$29
	B577	DEFB $DD,$02,$2C
	B57A	DEFB $C2,$02,$2E
	B57D	DEFB $A9,$02,$31
	B580	DEFB $91,$02,$34
	B583	DEFB $7B,$02,$37
	B586	DEFB $66,$02,$3A
	B589	DEFB $51,$02,$3E
	B58C	DEFB $3F,$02,$41
	B58F	DEFB $2D,$02,$45
	B592	DEFB $1C,$02,$49
	B595	DEFB $0C,$02,$4E
	B598	DEFB $FD,$01,$52
	B59B	DEFB $EF,$01,$57
	B59E	DEFB $E2,$01,$5D
	B5A1	DEFB $D5,$01,$62
	B5A4	DEFB $C9,$01,$68
	B5A7	DEFB $BD,$01,$6E
	B5AA	DEFB $B3,$01,$75
	B5AD	DEFB $A9,$01,$7B
	B5B0	DEFB $9F,$01,$83
	B5B3	DEFB $96,$01,$8B
	B5B6	DEFB $8E,$01,$93
	B5B9	DEFB $86,$01,$9C
	B5BC	DEFB $7E,$01,$A5
	B5BF	DEFB $77,$01,$AF
	B5C2	DEFB $71,$01,$B9
	B5C5	DEFB $6A,$01,$C4
	B5C8	DEFB $64,$01,$D0
	B5CB	DEFB $5F,$01,$DC
	B5CE	DEFB $59,$01,$E9
	B5D1	DEFB $54,$01,$F7
	B5D4	DEFB $3A,$02,$5B,$E6,$07,$6F,$26,$00
	B5DC	DEFB $01,$E6,$B5,$09,$46,$0E,$04,$C3
	B5E4	DEFB $FB,$B6,$A0,$B0,$C0,$90,$A0,$E0
	B5EC	DEFB $80,$60
The last 26 bytes are not notes. The first 18 are code that nothing reaches -- no instruction or table holds an address in it, and no session ran it: LD A,(TURNS); AND 7; LD L,A; LD H,0; LD BC, the address of the eight bytes after it; ADD HL,BC; LD B,(HL); LD C,4; JP to BEEP (in FOOTSTEP) -- four waves at a pitch from those eight bytes, chosen by the low three bits of the turn counter. The last eight are that table of half-wave counts. It is Knight Lore's blip for its moveable block, byte for byte apart from its three addresses (the turn counter, the table and BEEP), with the same eight pitches -- compared against Knight Lore's loaded snapshot; stage 2 had searched and missed it because the addresses differ.