6502 `02 58 f3` case doesn't match Visual 6502

[tom-seddon]

{ "name": "02 35 44", "initial": { "pc": 1837, "s": 197, "a": 33, "x": 239, "y": 61, "p": 108, "ram": [ [1837, 2], [1838, 53], [1839, 68]]}, "final": { "pc": 1837, "s": 197, "a": 33, "x": 239, "y": 61, "p": 108, "ram": [ [1837, 2], [1838, 53], [1839, 68]]}, "cycles": [ [1837, 2, "read"], [1838, 53, "read"], [1838, 53, "read"]] }

It suggests there should be a read from the PC on the 3rd cycle, but the bus activity in Visual 6502 shows a read from $ffff:

cycle	ab	db	rw	Fetch	pc	a	x	y	s	p
0	0000	02	1	unknown	0000	aa	00	00	fd	nv‑BdIZc
0	0000	02	1	unknown	0000	aa	00	00	fd	nv‑BdIZc
1	0001	58	1		0001	aa	00	00	fd	nv‑BdIZc
1	0001	58	1		0001	aa	00	00	fd	nv‑BdIZc
2	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
2	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc

Then 2 reads from fffe, and then endless ffff.

cycle	ab	db	rw	Fetch	pc	a	x	y	s	p
3	fffe	00	1		0002	aa	00	00	fd	nv‑BdIZc
3	fffe	00	1		0002	aa	00	00	fd	nv‑BdIZc
4	fffe	00	1		0002	aa	00	00	fd	nv‑BdIZc
4	fffe	00	1		0002	aa	00	00	fd	nv‑BdIZc
5	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
5	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
6	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
6	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
7	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
7	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
8	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
8	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
9	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
9	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
10	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
10	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
11	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
11	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
12	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
12	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
13	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
13	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
14	ffff	00	1		0002	aa	00	00	fd	nv‑BdIZc
```