===== 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 150:0 296:1 1320:5 1472:7 1749:10287 1849:10207
  42->41 101:0 236:1 1259:5 1413:7 1689:10287 1779:10207
  00->5A 92:0 227:1 1311:5 1464:7 1742:10287 1894:10207
  00->FF 92:0 227:1 1248:5 1404:7 1689:10287 1779:10207
  00->FF 92:1 1170:5 1322:7
send 01 42 00 00 00 00 00 00 00
  got  FF 41 5A FF FF (4 acked)
  /ACK at 1749 1689 1742 1689; low for 100 90 152 90
8 more reads (/ACK times per byte):
 4: FF 41 5A FF FF | 1665 1665 1667 1730
 4: FF 41 5A FF FF | 1663 1680 1613 1729
 4: FF 41 5A FF FF | 1671 1678 1605 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 1695 1740
 4: FF 41 5A FF FF | 1664 1666 1618 1730
 4: FF 41 5A FF FF | 1661 1675 1672 1741
01h, tight loop: /ACK after, low for: 1702/95 1702/107 1713/107 1713/107 1702/107 1702/107 1702/107 1713/107
Ack while /ACK low (seen at 1696): STAT then 0287; after /ACK high 0207; acked again 0007
01h with CTRL 0003 (no ACK IRQ): 93:1 1212:5 1364:7 1640:87 1730:7
01h at once after selecting: 93:0 210:1 1300:5 1452:7 1790:10287 1880:10207
Done.