Crash Theory

	A	B	C	D	E	F	G	H	I	J	K	L	M	N
1	Crash Setup	Crash Timing	Odds of Crash	Color odds assuming crash happens					Raw Color Odds
2	1-T156C, 3-T168, 2-T169, 4-T169p, 4+168C, 0-250p, 0-254P	29731	1.67%	100.00%					1.67%
3	4+169P, 3-175N, 2-176N, 0-252p, 0h-255, 0v-253	29732	9.17%	100.00%					9.17%
4	1-157p, 1-158C, 1-159P, 1-T159, 4-T165p, 4-T170N, 0v-247p	29733	23.33%	100.00%					23.33%
5	3-170C, 2-171C, 3-171P, 3-171N, 2-172P, 2-172N, 3-T171C, 2-T172C, 0v-250P, 0h-253N	29734	40.00%	95.83%	4.17%				38.33%	1.67%
6	4-T167P, 0-248P, 0h-252P	29735	56.67%	83.82%	16.18%				47.50%	9.17%
7	1-161N, 3-167P, 2-168P, 4-169p 3-T167C, 2-T168C, 4+T169p, 0h-249, 0v-255	29736	73.33%	68.18%	31.82%				50.00%	23.33%
8		29737	86.67%	55.77%	44.23%				48.33%	38.33%
9	4+T165p, 4+T170N, 0v-253N	29738	88.33%	46.23%	53.77%				40.83%	47.50%
10	4-169, 4-T170, 0h-250p, 0v-252P, 0h-254P	29739	76.67%	34.78%	65.22%				26.67%	50.00%
11	3-172N, 2-173N, 4+T167P, 0v-249, 0-254p	29740	60.00%	19.44%	80.56%				11.67%	48.33%
12	1-156C, 4+169p, 3-T173N, 2-T174N	29741	43.33%	5.77%	94.23%				2.50%	40.83%
13	1-159p, 3-T168C, 2-T169C	29742	28.33%		94.12%	5.88%				26.67%	1.67%
14	3-T169P, 2-T170P, 3-171p, 2-172p, 0h-248P, 0v-250p, 0v-254P	29743	20.83%		56.00%	44.00%				11.67%	9.17%
15	1-159N, 1-T159C, 4-T167p, 4+169, 4+T170, 0-248p, 0h-252p	29744	25.83%		9.68%	90.32%				2.50%	23.33%
16	3-157p, 2-168p	29745	40.00%			100.00%					40.00%
17		29746	56.67%			100.00%					56.67%
18	1-157, 1-T162N, 4-T167, 3-169P, 2-170P, 0v-248P	29747	73.33%			100.00%					73.33%
19	4-174N, 0v-252p, 0h-254p	29748	88.33%			100.00%					88.33%
20	4+T167p, 0-254N	29749	97.50%			100.00%					97.50%
21	4-170P, 4-169C, 4-170N, 4-T170C	29750	100.00%			100.00%					100.00%
22	1-T155, 3-172, 2-173	29751	100.00%			98.33%	1.67%				98.33%	1.67%
23	4-166P, 4+T167, 3-T169p, 2-T170p, 0h-252p, 0v-254p	29752	100.00%			90.83%	9.17%				90.83%	9.17%
24	4-T166, 3-168, 2-169, 4+174N	29753	100.00%			76.67%	23.33%				76.67%	23.33%
25		29754	100.00%			60.00%	38.33%	1.67%			60.00%	38.33%	1.67%
26	4+170P, 4+169C, 4+170N, 4+T170C	29755	100.00%			43.33%	47.50%	9.17%			43.33%	47.50%	9.17%
27	3-169p, 2-170p, 4-171N, 0v-248p	29756	100.00%			26.67%	50.00%	23.33%			26.67%	50.00%	23.33%
28	1-T156P, 4+166P, 4-T172N, 0h-254N	29757	100.00%			11.67%	48.33%	40.00%			11.67%	48.33%	40.00%
29	1-157C, 4+T166 4-T167C	29758	100.00%			2.50%	40.83%	56.67%			2.50%	40.83%	56.67%
30	1-158P, 4-T168P, 3-169, 2-170, 4-170p	29759	100.00%				26.67%	73.33%				26.67%	73.33%
31	3-T170, 2-T171	29760	100.00%				11.67%	88.33%				11.67%	88.33%
32	1-160N, 4-166p, 4+171N, 0v-254N	29761	98.33%				2.54%	97.46%				2.50%	95.83%
33	1-T155C, 3-172C, 4+T172N, 2-173C	29762	90.83%					100.00%					90.83%
34	4-168P, 4+T167C	29763	76.67%					100.00%					76.67%
35	4-T166C, 3-168C, 2-169C, 4+160p, 4+T168P, 3-T173N, 2-T174N	29764	60.00%					100.00%					60.00%
36	1-T158N	29765	43.33%					100.00%					43.33%
37	1-T156p, 4+166p, 3-T170N, 2-T171N	29766	26.67%					100.00%					26.67%
38	1-156P, 4-171	29767	11.67%					100.00%					11.67%
39	1-158p, 4+168P, 4-T168p	29768	2.50%					100.00%					2.50%
40	What it all means:
41	1-: Single, 2-: Double, 3-: Triple, 4-: Tetris 4%8, 4+: Tetris 0%8
42	0-: No lines, T/J, 0h-: No lines, horizontal Z, 0v-: No lines, vertical Z or OSLI
43	155: Level 155, T155: Transition to level 155
44	p: 1-6 pushdown, P: 7+ pushdown, N: No next box, C: Clear count 10
45	Crash Timing:
46	Expected number of frames before reaching the switch routine responsible for crashing, assuming 3c delay for extra instruction, 1c delay for PRNG, 1c delay for DMA cycle parity
47	Color Coding:
48	Crashes are seperated into 5 types based on where in the switch routine they are interrupted because this determines where execution will jump to afterwards. In the odds of crash column, and in the other sheets, darker colors indicate it is more likely the crash will be this particular color than one of the other possibilities. Italicized text indicates it is guaranteed it will be that color, should the crash occur.
49	Red Crash Behavior
50	This is the earliest in the routine the code may be interrupted and have adverse effects. The final instructions permitted to execute were either sta tmp1 or pla. The original routine will choose which page of memory to read the jump from, while where on the page to read from will be set by the P4 expansion port. Assuming no input, switches 1,3,5, and 7 all result in initiating the copyright screen sequence without updating onscreen graphics, resetting the game to the title screen after 500 frames. Switch 2 does not crash, as the PC is directed to an RTS elsewhere in memory. Switch 4 sends the PC into the PPU bus region which generally crashes but sometimes switches the graphics bank and continues. Switch 6 runs a routine which draws a large blank region in the middle of the frame, resulting in horrible graphics corruption overwriting vram tiles with their position, however the game will resume as normal afterwards. Switch 8 crashes immediately.
51	Orange Crash Behavior
52	This is one of the three rarer crashes, the others being blue and green. On an orange crash, the sta tmp2 is allowed to execute before being interrupted, meaning the table to load from is entirely overwritten during NMI. The readout of the P3/P4 controllers allows you to read a pair of bytes from anywhere in memory as the point to jump to. Assuming no input, all switches send the PC to $0000
53	Yellow Crash Behavior
54	The most common crash. This allows lda (tmp1),y \| tax \| iny to run. In this case, the address the PC will jump to is formed by taking low byte of the routine it was supposed to run, and loading the high byte from an arbitrary point in memory specified by the P3/P4 readout. Assuming no input, switches 1,3,5,7 send the PC to $005D, switch 2 to $0086, switch 4 to $0016, switch 6 to $007F, switch 8 to $0027
55	Green Crash Behavior
56	Another rarer crash, this one lets sta tmp2 run and then be instantly obliterated by NMI. Similar to yellow, the low byte that it jumps to will be correct, but the high byte is the P4 readout on the expansion port. Assuming no input, switches 1,3,5,7 send the PC to $005D, switch 2 to $0086, switch 4 to $0016, switch 6 to $007F, switch 8 to $0027
57	Blue Crash Behavior
58	The latest you can interrupt the switch routine and mess things up. This is quite direct; the high byte and low bytes are the readout of P3/P4 on the expansion port. Assuming no input, the PC is always sent to $0000
59	The actual routine we're interrupting Instruction Length in Cycles	Instruction	Cycles Elapsed
60	2	asl a	0
61	2	tay	2
62	2	iny	4
63	4	pla	6
64	3	sta tmp1	10
65	4	pla	13
66	3	sta tmp2	17
67	5	lda (tmp1),y	20
68	2	tax	25
69	2	iny	27
70	5	lda (tmp1),y	29
71	3	sta tmp2	34
72	3	stx tmp1	37
73	5	jmp (tmp1)	40
74
75	Calculator to see if a given setup will crash:
76		Input	Cycle Impact
77			7279	Cycles which always happen.
78	Cleared Lines	0	0
79	Lines cleared above row 11	0	0	Includes row 11, the row directly above the Z piece count.
80	Pressed Select on this frame	0	0
81	Next Box On	1	394
82	Position of first mino in 15th row	3	32	0 = no blocks in row; 1-10 indexed Left to Right, 15th row is the row directly above the T piece count.
83	Music Currently Allegro	1	0	Getting to allegro on killscreen and not dying is borderline impossible.
84	Crossed multiple of 10 Lines?	0	0
85	Crossed multiple of 100 Lines?	0	0	Be careful of this. From a 15+ start, happens on levels ending in 6.
86	Levelup?	0	0	Make sure you set both levelup and 10 lines.
87	Clear stats crossed multiple of 10?	0	0	Example: 1520th single would have this set. 1521st would not.
88	Pushdown Points	0	0	Varies based on if greater or less than 7
89	Level	250	21487	Use level transitioned into.
90	Current piece horizontal Z?	0	0	Do not worry about these if there is a line clear.
91	Current piece vert Z, or OSLI?	0	0
92	Current frame counter % 8 is 0?	0	0
93	Editing on this sheet used to be on so that people could use the calculator but someone used that to post their donation link. If you want to edit and play around, make a copy
94		Switch Routine	Crash Timing	Odds	Blue	Green	Yellow	Orange	Red			29876
95		Switch 8	29754	100.00%	0.00%	0.00%	60.00%	38.33%	1.67%	38.33%
96
97													1
98													100.00%
99
100	Red Crash behavior: Game reset	Switch 1	29192	0.00%	0%	0%	0%	0	0			7208		cb+4c = 10b+c = 117
101	Red Crash behavior: No crash	Switch 2	29252	0.00%	0%	0%	0%	0	0			7244
102	Red Crash behavior: Game reset	Switch 3	29354	0.00%	0%	0%	0%	0	0			72AA
103	Red Crash behavior: Console reset	Switch 4	29414	0.00%	0%	0%	0%	0	0			72E6
104	Red Crash behavior: Game reset	Switch 5	29515	0.00%	0%	0%	0%	0	0			734B
105	Red Crash behavior: Graphics corruption, no crash	Switch 6	29575	0.00%	0%	0%	0%	0	0			7387
106	Red Crash behavior: Game reset	Switch 7	29694	0.00%	0%	0%	0%	0	0			73FE
107	Red Crash behavior: Game crash	Switch 8	29754	100.00%			60%	0.3833	0.0167			743A
108		Limited Confetti?	No
109		Level lag?	No
110		Line lag?	No
111		Infinite Confetti?	No
112
113					Blue	Green	Yellow	Orange	Red
114		Switch 1	29197	0.00%	0%	0%	0%	0	0
115		Switch 2	29257	0.00%	0%	0%	0%	0	0
116		Switch 3	29359	0.00%	0%	0%	0%	0	0
117		Switch 4	29419	0.00%	0%	0%	0%	0	0
118		Switch 5	29520	0.00%	0%	0%	0%	0	0
119		Switch 6	29580	0.00%	0%	0%	0%	0	0
120		Switch 7	29699	0.00%	0%	0%	0%	0	0
121		Switch 8	29759	100.00%				0.2667	0.7333
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246		NTSC Len
247		29780.5	33247.5
248		First Crash
249		29731	33198

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	U	Z
1	Level	Lines	Standard					Transition					0 Lines			Notes
2			Standard	Pd <7	Pd 7+	NNB	Clr Count	Standard	Pd <7	Pd 7+	NNB	Clr Count	T, J	hZ	vZ,O,S,L,I				Combined Clear+Standard	Combined Clear + Standard on Transition

3	155	1						100.00%	86.67%			90.83%				Do not single at transition.		HOW TO READ THIS SHEET	0.00%	99.08%
4		2																	0.00%	0.00%
5		3																The cells bordered in red are those which give you odds for standard gameplay in which you do not flash the nextbox or push down. Notes explain briefly how to survive each level.	0.00%	0.00%
6		4																	0.00%	0.00%
7	156	1			11.67%		43.33%		26.67%G	100.00%		1.67%				Singles are a minor risk due to clear count. PD or NNB will save (But don't PD at transition)			4.33%	0.17%
8		2																	0.00%	0.00%
9		3																The first five columns are for clears during the level. The second five columns are for clears entering a level.	0.00%	0.00%
10		4																	0.00%	0.00%
11	157	1	73.33%	23.33%			40.83%									Singles are a MAJOR risk. Flash nextbox to save it if one is taken.		Levels are groups of 4 rows. Each row represents a different amount of lines cleared.	70.08%	0.00%
12		2																	0.00%	0.00%
13		3																The "clear count" column, unless you want to mentally count your number of each type of line clear, is going to be unknowable to the player. You can play as if there's a 10% chance your odds are drawn from that column instead of the standard column. If you complete an entire level in singles, that column will be used at least once.	0.00%	0.00%
14		4																	0.00%	0.00%
15	158	1		2.50%	100.00%		23.33%	100.00%			43.33%					Do not single at transition. Further singles are a minor risk due to clear count. Next box will save.			2.33%	90.00%
16		2																	0.00%	0.00%
17		3																	0.00%	0.00%
18		4																The final 3 columns are used for crashes involving no line clears. The columns are broken into the 3 categories of pieces that determine whether the game will crash. hZ means horizontal Z, vZ means vertical Z. In those levels, the 4 rows are used like the columns are in the early parts of the sheet.	0.00%	0.00%
19	159	1		28.33%	23.33%	25.83%		23.33%				25.83%				You're safe until 166. Singles are always safe from here.			0.00%	23.58%
20		2																	0.00%	0.00%
21		3																	0.00%	0.00%
22		4																	0.00%	0.00%
23	160	1				2.50%												The columns to the right here add together the odds of clear count triggering and standard clears.	0.00%	0.00%
24		2									25.50%								0.00%	0.00%
25		3																	0.00%	0.00%
26		4																	0.00%	0.00%
27	161	1				73.33%													0.00%	0.00%
28		2																	0.00%	0.00%
29		3																	0.00%	0.00%
30		4																	0.00%	0.00%
31	162	1									73.33%								0.00%	0.00%
32		2																	0.00%	0.00%
33		3																	0.00%	0.00%
34		4																	0.00%	0.00%
35	163	1																	0.00%	0.00%
36		2																	0.00%	0.00%
37		3																	0.00%	0.00%
38		4																	0.00%	0.00%
39	164	1														WARNING: Singles will not update your level palette from here on			0.00%	0.00%
40		2																	0.00%	0.00%
41		3																	0.00%	0.00%
42		4																	0.00%	0.00%
43	165	1																	0.00%	0.00%
44		2																	0.00%	0.00%
45		3																	0.00%	0.00%
46		4							55.83%										0.00%	0.00%
47	166	1														Do not tetris into transition. PD/NB will save. Singles stop updating your line count at this level.			0.00%	0.00%
48		2																	0.00%	0.00%
49		3																	0.00%	0.00%
50		4		62.50%	100.00%			100.00%				30.00%							0.00%	93.00%
51	167	1														Do not tetris into transition. NNB will save			0.00%	0.00%
52		2																	0.00%	0.00%
53		3		40.00%	73.33%							73.33%							0.00%	7.33%
54		4						86.67%	61.67%	58.33%		30.80%							0.00%	81.08%
55	168	1														Do not take any Triples. NNB/PD will save.			0.00%	0.00%
56		2		40.00%	73.33%							73.33%							0.00%	7.33%
57		3	100.00%				60.00%	1.67%				28.33%							96.00%	4.33%
58		4			39.58%		0.83%		1.25%	80.00%									0.08%	0.00%
59	169	1														Take only singles. Other clears can be saved with NNB			0.00%	0.00%
60		2	100.00%				60.00%	1.67%				28.33%							96.00%	4.33%
61		3	26.67%	100.00%	73.33%				100.00%	20.83%									24.00%	0.00%
62		4	51.25%	58.33%	4.58%		100.00%		37.50%										56.13%	0.00%
63	170	1														Take only singles. Tetrises are only safe during-level. PD saves trans tetris, NNB saves others.			0.00%	0.00%
64		2	26.67%	100.00%	73.33%				100.00%	20.83%									24.00%	0.00%
65		3					40.00%	100.00%			26.67%								4.00%	90.00%
66		4		10.67%	95.42%	100.00%		51.25%			11.67%	100.00%							0.00%	56.13%
67	171	1														Avoid Tetrises and Doubles. PD will save. NNB will crash.			0.00%	0.00%
68		2					40.00%	100.00%			26.67%								4.00%	90.00%
69		3		20.83%	40.00%	40.00%						40.00%							0.00%	4.00%
70		4	5.83%			40.11%													5.25%	0.00%
71	172	1														Take only singles. Other clears can be saved with NNB			0.00%	0.00%
72		2		20.83%	40.00%	40.00%						40.00%							0.00%	4.00%
73		3	100.00%			60.00%	90.83%												99.08%	0.00%
74		4									95.42%								0.00%	0.00%
75	173	1														Do not take doubles. PD will save.			0.00%	0.00%
76		2	100.00%			60.00%	90.83%												99.08%	0.00%
77		3									43.33%								0.00%	0.00%
78		4																	0.00%	0.00%
79	174	1														Safe until 247!			0.00%	0.00%
80		2									43.33%								0.00%	0.00%
81		3																	0.00%	0.00%
82		4				94.17%													0.00%	0.00%
83	175	1														Tetrises stop updating your level			0.00%	0.00%
84		2																	0.00%	0.00%
85		3				9.17%													0.00%	0.00%
86		4																	0.00%	0.00%
87	176	1														Triples stop updating your level			0.00%	0.00%
88		2				9.17%													0.00%	0.00%
89		3																	0.00%	0.00%
90		4																	0.00%	0.00%
91	177	1														Doubles stop updating your level and tetrises stop updating your lines
92		2
93		3
94		4
95	178	1														Triples stop updating your lines
96		2
97		3
98		4
99	179	1														Doubles stop updating your lines. Everything is now permanently behind.
100		2
101		3
102		4
371	247	1														Standard	Play normally
372		2													23.33%	Pd <7
373		3														Pd 7+
374		4														NNB
375	248	1														Standard	Play normally
376		2											25.83%	100.00%	100.00%	Pd <7
377		3											56.67%	20.83%	73.33%	Pd 7+
378		4														NNB
379	249	1												73.33%	60.00%	Standard	NNB or PD every piece.
380		2														Pd <7
381		3														Pd 7+
382		4														NNB
383	250	1														Standard	Play normally
384		2											1.67%	76.67%	20.83%	Pd <7
385		3													40.00%	Pd 7+
386		4														NNB
387	251	1														Standard	Completely Safe
388		2														Pd <7
389		3														Pd 7+
390		4														NNB
391	252	1														Standard	Play normally
392		2											9.17%	25.83%	88.33%	Pd <7
393		3												56.67%	76.67%	Pd 7+
394		4														NNB
395	253	1													9.17%	Standard	Safer with PD. DO NOT NNB.
396		2														Pd <7
397		3														Pd 7+
398		4												40.00%	88.33%	NNB
399	254	1														Standard	Play normally
400		2											60.00%	88.33%	100.00%	Pd <7
401		3											1.67%	76.67%	20.83%	Pd 7+
402		4											97.50%	100.00%	98.33%	NNB
403	255	1												9.17%	73.33%	Standard	NNB or PD every piece.
404		2														Pd <7
405		3														Pd 7+
406		4														NNB
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450

	A	B	C	D	E	F	G	I	J	K	L	M	N	O	P	Q	R	U	V	W	X
1
2			Entry point?	Value	Instruction	len
3		Address
4	0	0	x	0	BRK	2	This is always initially 00 unless you are holding buttons on fami expansion port.	BRK
5	1	1			varies	?	May be part of intended jump address. 16, 27, 5D, 7F, 86
6	2	2		0	BRK	2	Seems to always be 00?	BRK
7	3	3
8	4	4		0	BRK	2		BRK
9	5	5		7
10	6	6		86	STX $00	2		STX $00
11	7	7
12	8	8			BRK			BRK
13	9	9
14	10	A			BRK			BRK
15	11	B
16	12	C			BRK			BRK
17	13	D
18	14	E			BRK			BRK		Wildcard possibilities
19	15	F								78 PC+3	12 crash	1 uncrash (rts)
20	16	10			BRK			BRK		122 PC+2	8 branch
21	17	11								32 PC+1	3 jump
22	18	12			BRK			BRK		256
23	19	13
24	20	14		00/CC	BRK/CPY abs	2/3	patchtoPPUaddress, set to CC if a game has ended, which is 3 bytes.	BRK	CPY $0000	;assuming not first game
25	21	15							1							Running Total
26	22	16	x		BRK	2		BRK								Crash	Return
27	23	17			???		Wildcard byte, may contain any number. 12/256 are crash, 3/256 are jmp/jsr which in themselves likely send execution back to $00 but now $00 might contain something new.		0.125	0.4921875	0.3046875	0.046875	l			4.69%	0.39%
28	24	18			???		Wild - rng	0.0380859375	0.015625			0.0615234375	0.005859375	0.00048828125		5.27%	0.44%
29	25	19					Wild - spawn count		0.0634765625	0.2499389648			0.1547241211	0.02380371094	0.001983642578	7.65%	0.64%
30	26	1A					Spawned piece = 02, 07, 08, 0A, 0B, 0E, 12 \| 2 crash 2+2 2+1 1+3		0.1227678571		0.1227678571	0.06138392857		0.1227678571		19.93%	0.64%
31	27	1B			BRK			BRK								19.93%	0.64%
32	28	1C			BRK			0.4107927595			BRK					19.93%	0.64%
33	29	1D			BRK			BRK			0.2774919782					19.93%	0.64%
34	30	1E			...			0.4721766881			BRK					19.93%	0.64%
35	31	1F						BRK								19.93%	0.64%
36	32	20									BRK					19.93%	0.64%
37	33	21						BRK								19.93%	0.64%
38	34	22									BRK					19.93%	0.64%
39	35	23						BRK								19.93%	0.64%
40	36	24									BRK					19.93%	0.64%
41	37	25						BRK								19.93%	0.64%
42	38	26									BRK					19.93%	0.64%
43	39	27	x					BRK								19.93%	0.64%
44	40	28									BRK					19.93%	0.64%
45	41	29						BRK								19.93%	0.64%
46	42	2A									BRK					19.93%	0.64%	5	1	1	2
47	43	2B						BRK								19.93%	0.64%	6		1	3
48	44	2C									BRK					19.93%	0.64%	7		1	3
49	45	2D						BRK								19.93%	0.64%	8		1	3
50	46	2E									BRK					19.93%	0.64%	9		5	3
51	47	2F						BRK								19.93%	0.64%	10	4	10	bpl
52	48	30									BRK					19.93%	0.64%	11	9	20	2
53	49	31						BRK								19.93%	0.64%	12	25	60	crash
54	50	32									BRK					19.93%	0.64%	13		1	2
55	51	33			BRK			BRK								19.93%	0.64%
56	52	34		0E	ASL	3	being a 3-length instruction, this resyncs both possible routes. Affects $00				ASL					19.93%	0.64%
57	53	35						BRK								19.93%	0.64%
58	54	36						0.4721766881			0.2774919782					19.93%	0.64%
59	55	37			BRK			BRK								19.93%	0.64%
60	56	38						0.7496686663								19.93%	0.64%
61	57	39			BRK			BRK								19.93%	0.64%
62	58	3A														19.93%	0.64%
63	59	3B			BRK			BRK								19.93%	0.64%
64	60	3C														19.93%	0.64%
65	61	3D			BRK			BRK								19.93%	0.64%
66	62	3E														19.93%	0.64%
67	63	3F			BRK			BRK								19.93%	0.64%
68	64	40					tetriminoX := $0040									19.93%	0.64%
69	65	41					tetriminoY, semi-wild. Most pieces bottom out at $12 which is a crash; horizontal bar / double flipped is +1 so those are $13. Pretty good odds of crashing from this byte.	0.1874171666	0.02249005999	0.4498011998			BPL ??			64.91%	0.64%
70	66	42					currentPiece := $0042 I and T in spawn orientations are crashes here. More evenly distributed than prev byte but still likely to crash.						0.05247680664			64.91%	0.64%
71	67	43						BRK								64.91%	0.64%
72	68	44					levelNumber 9B-B0 (155-176) F7-FF (247-255) CANNOT CRASH		0.01124502999	0.01124502999						64.91%	0.64%
73	69	45		1A?			fallTimer := $0045	BRK								64.91%	0.64%
74	70	46					autorepeatX := $0046 00-10 may crash, particularly if short taps			0.005622514997	0.005622514997					65.47%	0.64%
75	71	47					startLevel := $0047 lmao if you started on 18 you crash here.	STP								65.47%	0.64%
76	72	48					playState := $0048	0.1986621966								85.34%	0.64%
77	73	49					vramRow := $0049 ; Next playfield row to copy. Set to $20 when playfield copy is complete									85.34%	0.64%
78	74	4A					completedRow := $004A ; Row which has been cleared. 0 if none complete									85.34%	0.64%
79	75	4B					completedRow									85.34%	0.64%
80	76	4C					completedRow									85.34%	0.64%
81	77	4D					completedRow									85.34%	0.64%
82	78	4E					autorepeatY := $004E									85.34%	0.64%
83	79	4F					holdDownPoints := $004F									85.34%	0.64%
84	80	50					lines := $0050									85.34%	0.64%
85	81	51					lines									85.34%	0.64%
86	82	52					rowY := $0052									85.34%	0.64%
87	83	53					score low									85.34%	0.64%
88	84	54					score middle						Farthest Possible			85.34%	0.64%
89	85	55					score high
90	86	56					completedLines := $0056
91	87	57					lineIndex := $0057 ; Iteration count of playState_checkForCompletedRows
92	88	58					curtainRow := $0058
93	89	59					startHeight := $0059
94	90	5A					garbageHole := $005A
95	91	5B
96	92	5C
97	93	5D	x
98	94	5E
99	95	5F
100	96	60					tetriminoX := $0040
101	97	61					tetriminoY, semi-wild. Most pieces bottom out at $12 which is a crash; horizontal bar / double flipped is +1 so those are $13. Pretty good odds of crashing from this byte.
102	98	62					currentPiece := $0042 ; Current piece as an orientation ID
103	99	63
104	100	64					levelNumber := $0044
105	101	65					fallTimer := $0045
106	102	66					autorepeatX := $0046
107	103	67					startLevel := $0047
108	104	68					playState := $0048
109	105	69					vramRow := $0049 ; Next playfield row to copy. Set to $20 when playfield copy is complete
110	106	6A					completedRow := $004A ; Row which has been cleared. 0 if none complete
111	107	6B					completedRow
112	108	6C					completedRow
113	109	6D					completedRow
114	110	6E					autorepeatY := $004E
115	111	6F					holdDownPoints := $004F
116	112	70					lines := $0050
117	113	71					lines
118	114	72					rowY := $0052
119	115	73					score low
120	116	74					score middle
121	117	75					score high
122	118	76					completedLines := $0056
123	119	77					lineIndex := $0057 ; Iteration count of playState_checkForCompletedRows
124	120	78					curtainRow := $0058
125	121	79					startHeight := $0059
126	122	7A					garbageHole := $005A
127	123	7B
128	124	7C
129	125	7D
130	126	7E
131	127	7F	x
132	128	80
133	129	81
134	130	82
135	131	83
136	132	84
137	133	85
138	134	86	x
139	135	87
140	136	88
141	137	89
142	138	8A
143	139	8B
144	140	8C
145	141	8D
146	142	8E
147	143	8F
148	144	90
149	145	91
150	146	92
151	147	93
152	148	94
153	149	95
154	150	96
155	151	97
156	152	98
157	153	99
158	154	9A
159	155	9B
160	156	9C
161	157	9D
162	158	9E
163	159	9F
164	160	A0
165	161	A1
166	162	A2
167	163	A3
168	164	A4
169	165	A5
170	166	A6
171	167	A7
172	168	A8
173	169	A9
174	170	AA
175	171	AB
176	172	AC
177	173	AD
178	174	AE
179	175	AF
180	176	B0
181	177	B1
182	178	B2
183	179	B3
184	180	B4
185	181	B5
186	182	B6
187	183	B7
188	184	B8
189	185	B9
190	186	BA
191	187	BB
192	188	BC
193	189	BD
194	190	BE
195	191	BF
196	192	C0
197	193	C1
198	194	C2
199	195	C3
200	196	C4
201	197	C5
202	198	C6
203	199	C7
204	200	C8
205	201	C9
206	202	CA
207	203	CB
208	204	CC
209	205	CD
210	206	CE
211	207	CF
212	208	D0
213	209	D1
214	210	D2
215	211	D3
216	212	D4
217	213	D5
218	214	D6
219	215	D7
220	216	D8
221	217	D9
222	218	DA
223	219	DB
224	220	DC
225	221	DD
226	222	DE
227	223	DF
228	224	E0
229	225	E1
230	226	E2
231	227	E3
232	228	E4
233	229	E5
234	230	E6
235	231	E7
236	232	E8
237	233	E9
238	234	EA
239	235	EB
240	236	EC
241	237	ED
242	238	EE
243	239	EF
244	240	F0
245	241	F1
246	242	F2
247	243	F3
248	244	F4
249	245	F5
250	246	F6
251	247	F7
252	248	F8
253	249	F9
254	250	FA
255	251	FB
256	252	FC
257	253	FD
258	254	FE
259	255	FF
260	256	100
261	257	101
262	258	102
263	259	103
264	260	104
265	261	105
266	262	106
267	263	107
268	264	108
269	265	109
270	266	10A
271	267	10B
272	268	10C
273	269	10D
274	270	10E
275	271	10F
276	272	110
277	273
278	274
279	275
280	276
281	277
282	278
283	279
284	280
285	281
286	282
287	283
288	284
289	285
290	286
291	287
292	288
293	289
294	290
295	291
296	292
297	293
298	294
299	295
300	296
301	297
302	298
303	299
304	300
305	301
306	302
307	303
308	304
309	305
310	306
311	307
312	308
313	309
314	310
315	311
316	312
317	313
318	314
319	315
320	316
321	317
322	318
323	319
324	320