===== 12 JPD PAD IN SLOT 1 | BIOS 19951204 System ROM Version 3.0 11/18/96 A
BadVaddr as the group starts: 00000480
Slot 1, 01 42 00 00 00..., every change of JOY_STAT (+I_STAT.7 at bit 16):
  01->FF 145:0 290:1 1321:5 1473:7 1750:10287 1842:10207
  42->41 97:0 232:1 1263:5 1355:7 1693:10287 1783:10207
  00->5A 92:0 232:1 1331:5 1421:7 1759:10287 1849:10207
  00->FF 93:0 228:1 1314:5 1404:7 1743:10287 1843:10207
  00->FF 92:0 232:1 1269:5 1421:7
send 01 42 00 00 00 00 00 00 00
  got  FF 41 5A FF FF (4 acked)
  /ACK at 1750 1693 1759 1743; low for 92 90 90 100
8 more reads (/ACK times per byte):
 4: FF 41 5A FF FF | 1671 1681 1800 1734
 4: FF 41 5A FF FF | 1664 1673 1708 1739
 4: FF 41 5A FF FF | 1668 1686 1792 1735
 4: FF 41 5A FF FF | 1671 1678 1695 1740
 4: FF 41 5A FF FF | 1664 1666 1618 1730
 4: FF 41 5A FF FF | 1661 1675 1672 1741
 4: FF 41 5A FF FF | 1671 1678 1605 1740
 4: FF 41 5A FF FF | 1664 1666 1618 1730
01h, tight loop: /ACK after, low for: 1691/95 1713/96 1702/96 1702/107 1713/107 1713/96 1702/96 1713/96
Ack while /ACK low (seen at 1701): STAT then 0287; after /ACK high 0207; acked again 0007
01h with CTRL 0003 (no ACK IRQ): 93:0 207:1 1297:5 1449:7 1789:87 1879:7
01h at once after selecting: 98:0 212:1 1301:5 1462:7 1738:10287 1828:10207
Done.