Traces from trying to use what seems like a built-in debug mechanism. %%hook -b f6024 println(r0, r1, r2, r3); Seems like normal USB activity doesn't generate any logging. It's possible that this log is meant to be retrieved via USB. Garbage happens below when an ISR (or maybe the 8051?) flashes the LED. Top half of r0 indicates the trace location, low bits are type and count information for other args if any. After resetting the drive and inserting a disc. Log probably stops as a result of the hook being overwritten. 41ac10ff 00000052 00000032 00000033 302c09c5 0035ef80 0000000d 0000a008 143100aa 00000008 0420c000 04002000 1480026a 00000040 04206000 00000505 142900aa 0420c280 00000200 00007d83 142e012a 00000000 00000000 0009abd5 229e00aa 00000000 00003000 000000c4 22a300aa 00000040 02000c0e 0000000b 22a4012a 000000a0 00000001 02000c01 0e49084c 00000578 00000001 0000003f 210200aa 04206000 00000000 00000001 210a00aa 04206000 00000000 00000001 0df5012a 00000000 00000000 00000010 0df6026a 0000002c 00000000 000f940f 2d0700aa 000000f7 02000c15 00002e00 0e4600aa 04002240 00000500 00000000 0e47020a 00000000 00000000 00084c6b 302d00aa 0420c000 01ffb819 02000ce1 301100aa 01ffb293 00000001 000cd971 0eb304ea 00019593 00000001 000cd4d1 0eb400aa 00000009 00000001 00085ab5 141a00aa 01ffb8a3 01ffa2b4 01ffa3f9 143100aa 000000e4 000000e4 0420c040 1480026a 00000040 04206000 00000505 142900aa 0420c280 00000200 00007d83 142e012a 00000000 00000000 0009abd5 229e00aa 00000000 00003000 000000c4 22a300aa 00000040 02000c0e 0000000b 22a4012a 000000a0 00000001 02000c01 0e49084c 00000578 00000001 0000003f 210200aa 04206000 00000000 00000001 210a00aa 04206000 00000000 00000001 ?gW.N>.?L?0df6026a 0000002c 00000000 000f940f 28cc00aa 01ffa07?ؐ0420c200 fffffc00 13a600aa 04206000 00000002 01000000 2c9400aa 00000020 00040000 0420b?80 142900aa 0420b3c0 00244450 0000a800 142e012a 00000000 00000000 0009abd5 0eb5020a ?.?.ΦL?2a2d012a 00000000 00000001 00085b9f ?w?.N&.߮L?0df6026a 0000002c 04206000 000f940f 2a28031a 00000000 00000370 00010108 0df5012a 00000000 00000000 00000010 0df6026a 0000001b 04206000 000f940f 0df5012a 00000000 00000000 00000010 0df6026a 0000002c 04206000 000f940f 0ebc045? 00000049 00000098 00007f49 f?٘700aa 01ffb2b8 0a66236f 00000000 0338045a 0000N?N?ή?L?029a00aa 00000020 0420c300 00000000 02a410ff 4280de0b c53d1b38 438078c4 02a5012a 00000008 0000001c 80de0b00 02a6012a fffffffe 0000001e bd1b3800 n.w>N.N>.fnG?L?02a8012a ffffffe5 0000001b dfdd4000 02a9020a 00000085 00??nGNW??02b0020a 00000020 000000e5 dfdd4000 02b1020a 00000008 000000fe 00059df9 NN????.?.?~?L?0ec100aa 01ffb2b8 01ffa0f2 00059e0b 143100aa 0000806c 0s??00000048 1480026a 00000040 04206000 00000505 142900aa 0420c280 00000200 000?掇~?L?142e012a 00000000 00000000 0009abd5 229e00aa 00000000 00003000 000000c4 22a300aa?nn?N?צ?22a4012a 000000a0 00000001 02000c01 0e49084c 00000578 000000>n?OΦ?210200aa 04206000 00000000 00000001 210a00aa 04206000 00000000 00000001 ?gW.n..?L?0df6026a 0000002c 04206000 000f940f 2f0c0754 00000070 00000070 00000043 2f0b04ea 00000000 00000000 00000000 2f24026a 00000070 fff6c000 80000000 19cd00aa 01ffa0f2 00000001 000c1745 142900aa 00000005 00000001 00100785 142e012a 00000000 00000000 0009abd5 2b8f00aa 01ffa07a 000000c8 01ffa07a 19cf0302 00000000 00000006 000000d8 19d00302 00000000 00000002 00000050 19d10302 00000000 00000002 00000050 19d20611 00000000 00002000 00000000 19cf0302 00000001 00000006 000000d8 19d00302 00000001 00000002 00000050 19d10302 00000001 00000002 00000050 19d20611 00000001 00002000 00000001 19cf0302 00000002 00000006 000000d8 19d00302 00000NN?殦L?19d10302 00000002 00000002 00000050 19d20611 00000002 00002000 0000000s??19cf0302 00000003 00000006 000000d8 19d00302 00000003 00000002 00000050 19d10302 0000nN??L?19d20611 00000003 00002000 00000003 ?G?.?N?N~?L?0e47020a 00000000 00000000 00084c6b 2d0700aa 00000064 fff6c000 00007000 0b2b031a 00000001 0000000a 00000017 0b2b031a 00000031 00000025 ~L?0b2b031a 00000031 0000004b 00000031 0b2b031a 00000031 00000078 00000031 0b2b03??̐00000031 00000090 00000031 0b2b031a 00000031 00000078 00000031 0b2b031a 0000001a 0000000?ؐ0000001a 143d071e 00000000 0000d500 00000045 2d0700aa 01ffa0d3 02000c14 80000000 2cf0012a 00000002 00000500 00000000 0b2b031a 00000031 00000025 00003600 0b63026a 000000be 00000002 0000000a 0b65026a 000000be 00000001 0007cf8d 2cc3026a 000000ab 04202000 02000590 2cce020a 00000000 000000ab 02000590 ?سf012a 00000020 00080000 000000f6 2b00012a 00000004 00000001 9s??泘0f6 2b00012a 00000005 00000001 000000f6 2b00012a 00000006 00000001 000000f6???2b020855 00004450 000044c0 00000000 2b030400 00000013 0000007e 00000000 2b040656 00003v?̐000043c8 00000648 2b050302 000000be 0000007f ffffffc1 2b06020a 00000004 00000002 0012e44琀s??2d0700aa 00000007 00000001 0012e451 2af600aa 01ffa314 01ffa313 01ffa312 2af80656 0000svvv?̘00e800 00000700 143d071e 00000000 0000d500 00000045 2d0700aa 01ffa0d3 02000c14 80000000 2cf0012a 00000002 00000500 00000000 0b2b031a 00000031 00000025 00003600??0b63026a 000000be 00000002 0000000a 0b65026a 000000be 00000001 0007cf8d 2cc3026a 0000.7䘎NNF?.?L?2cce020a 00000000 000000ab 02000590 2b0d012a 00000021 00080000 00000336 2b0e012a 0000000a 0420b080 00000336 2b110855 00004150 000041b8 00000000 2b120400 00000013 0000007e 00000000 2b130656 00003a80 00004090 00000610 2b140302 000000bf 0000007f ffffffc0 2b15020a 00000004 00000002 0012eb87 2d0700aa 00000610 00000001 0012eb95 2af600aa 00005078 00000011 a0f00000 2af80656 00005078 0000f000 00000c20 2b1f0302 00000001 00000000 00000000 2b250302 00000062 000000bf 00000056 2b2800aa 01ffa2e2 00000056 0012eefd ?v???sss?̘000070 00000070 00000070 2b3c012a 0000000?昐0420b040 00000eba 143d071e 00000000 0000d500 00000045 2d0700aa 01ffa0d3 02000c14 80000000 2cf0012a 00000002 00000500 00000000 0b2b031a 00000031 00000025 00003600 0b63026a 000000be 00000002 0000000a 0b65026a 000000be 00000001 0007cf8d 2cc3026a 000000ab 04202000 02000590 2cce020a 00000000 000000ab 02000590 2b0b012a 00000003 0420b080 0420b400 ??̲012a 00000021 00080000 00000336 2b0e012a 0000000a 0420b080 00000336 2b110855 000041b8 00000000 00000000 2b120400 0000005a 00000000 00000000 2b130656 00003a78 00004098 00000620 2b140302 000000c0 0000007f ffffffbf 2b15020a 00000002 00000002 0012eb87 2d0700aa 00000620 00000001 0012eb95 2af600aa 00005108 00000011 a2100000 2af80656 00005108 0000f000 00000c40 2b1f0302 00000001 00000001 00000000 2b250302 00000062 000000c0 00000056 ????沘12a 00000002 00000000 01ffa310 2b3f012a 00000002 00000001 0012f5e3 2b40026a 00000620..n?WήGW??2b41026a 00003a78 00000001 0012f5f5 2b42026a 00004098 00000001 0012f5fd ?????̙a 000000c0 00000001 0012f605 0e3a0302 00000001 0000003f 00000000 ??晲b012a 000000a0 00000018 a1b33333 2ade00aa 000000f0 000000c0 0012d7c7 2aeb00aa 00000005 00000001 0012d8b3 02cc0400 0000001a 0000001a 0000001c 02cf020a 00000002 0000001a ffffffff 02d008fa 00000053 000000bb 00059fd1 02d108fa 00000015 000000fc 00059fdd 0b2b031a 00000001 0000000a 00000017 0b2b031a 00000031 00000025 00000031 0b2b031a 00000031 0000004b 00000031 0b2b031a 00000031 00000078 00000031 0b2b031a 00000031 00000090 00000031 0b2b031a 00000031 00000078 00000031 0b2b031a 0000001a 0000000a 0000001a 19cd00aa 01ffa07a 0420c200 fffffc00 142900aa 00000005 00000001 00100785 142c00aa 0000003c 00000001 0009abd5 2b8e00aa 01ffa07a 00000008 01ffa07a 19cf0302 00000000 00000006 000000d6 19d00302 00000000 00000003 00000036 19d10302 00000000 00000003 00000036 19d20611 00000000 00002000 00000000 ???v???̙ 00000001 00000006 000000d6 19d00302 00000001 00000003 00000036 19d10302 00000001~n??L?19d20611 00000001 00002000 00000001 ?19d00302 00000002 00000003 00000036 19d10302 00000002 00000003 00000036 19d20611 0000000??Θ0002000 00000002 19cf0302 00000003 00000006 000000d6 19d00302 00000003 00000003 00000036?Å19d10302 00000003 00000003 00000036 19d20611 00000003 00002000 00000003 143100aa 0000d6?.?g'ή.NNng.?צ?1480026a 00000040 04206000 00000505 142900aa 0420c280 00000200?~?L?142c00aa 0000003c 00000001 0009abd5 181000aa 00002c0f 04202000 00007d83 19c4.~?N?Nξ?L?19c700aa 00000001 0000000e 040b0000 0e49084c 00000708 00000002 00000062 19c900aa 02000c0e 02000c01 00000021 19cc00aa 02000c0e 02000c01 04207540 17b500aa 000000cc 00000000 00d00000 17dd00aa 04206000 00000000 00d00000 180f00aa 00004000 00004000 00002500 0df5012a 00000000 00000000 00000010 0df6026a 0000002c 04206000 000f940f 2d0700aa 04206000 00000000 00001000 141e00aa 0420c200 00000022 01ffa07a 1925012a 00000000 01ffa0f2 00000000 0e3a0302 00000000 00000001 00000000 0e3d020a 00000001 00000000 00010108 0e41020a 00000000 00000001 00084aab 1927020a 00000042 00000096 00009642 ?143d071e 00000001 0000f000 00000045 141e00aa 0420c200 00000022 01ffa07a ??s?̘aa 000000f7 0a66236f 00000000 141e00a?昐0420c200 00000022 01ffa07a ?٘700aa 01ffa0d3 02000c14 00000001 2cf0012a 0000000??昘0000500 00000000 N?N?n.6n.N?f?ΦL?0b63026a 000000be0b63026a 000000be 00000002 0000000a 318f04ea 01e441a8 01e441a6 00000001 141a00aa 01ffb8a3 01ffa2b4 01ffa3f9 023204ea 00000000 00400400 000000f7 2fe308fa 00000001 00000000 00030110 30e200aa 01f77000 00000001 000cd33f Drive reset, disk in and spinning, hook inserted: 31960cfe 6b6565ac 04011f04 00000000 31960cfe 656b6fac 04011f04 00003b01 31960cfe 636f6cac 000f6018 00000004 31960cfe 636f6cac 000f6028 00000002 Reading uncached sector 12345: 31960cfe 010000a8 00004523 00000100 360200aa 02000f3c 00000021 00000008 315b05ca 00000000 00000000 0010200f 31810406 00000007 00000069 00000000 021d00aa 0f000000 0420b180 0000004b 362904ea 00112340 02000f04 040300c0 362e0302 00000002 00000000 00000069 0fb90302 00000000 00000000 00000003 16f20af6 00022460 00020695 0000038e 16f5080d 00000000 00000001 00020695 16f5080d 00000011 00000001 000224fe 16f5080d 00000020 00000001 00022448 16fa034a 00000000 00000000 00000028 021f0cfe 00000000 00020001 002c0000 432d10ff 00000041 00000000 00112340 42b4053a 00000007 00112340 00011026 42b510ff 00000000 00112376 001034de 36130703 00000000 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 001123a8 0011238c 00000001 35fd10ff 00000001 00100000 00ca73ff 35fe09ce 00000001 00000000 00112340 361d04ea 00000001 00000001 001044df 362904ea 00112340 02000f04 040300c0 362e0302 00000002 00000000 00000069 0fb90302 00000000 00000000 00000003 16f20af6 00022460 00022486 00000005 16f5080d 00000001 00000001 00022486 16fa034a 00000000 00000000 00000028 021f0cfe 00000001 00020001 002c0000 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00112340 42b4053a 00000007 00112340 00000000 42b510ff 00000000 00112376 001034de 36130703 00000001 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 001123a8 0011238e 00000001 361d04ea 00000002 00000001 0221f308 362904ea 00112340 02000f04 040300c0 362e0302 00000002 00000000 00000069 0fb90302 00000000 00000000 00000003 16f20af6 00022460 00022481 00000005 16f5080d 00000001 00000001 00022481 16fa034a 00000000 00000000 00000028 021f0cfe 00000002 00020001 002c0001 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00112340 42b4053a 00000007 00112340 00011186 42b510ff 00000000 00112376 001034de 36130703 00000002 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 001123a8 0011238e 00000001 361d04ea 00000003 00000001 022353a0 021d00aa 0f000000 0420b180 0000004b 362904ea 00112340 02000f04 040300c0 362e0302 00000002 00000000 00000069 0fb90302 00000000 00000000 00000003 16f20af6 00022460 00022484 00000005 16f5080d 00000001 00000001 00022484 16fa034a 00000000 00000000 00000028 021f0cfe 00000003 00030001 002c0001 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00112340 Reading uncached sector 50123: 31960cfe 050000a8 00002301 00000100 360200aa 02000f3c 00000021 00000008 315b05ca 00000000 00000000 0010200f 31810406 0000000b 00000065 00000000 021d00aa 0f000000 0420b180 0000004b 362904ea 00150120 02000f04 040300c0 362e0302 00000002 00000000 00000065 0fb90302 00000000 00000000 00000003 16f20af6 0002a01c 0002264e 0000037b 16f5080d 00000000 00000001 0002264e 0df5012a 00000000 00000000 9290c971 0df6026a 00000004 04206000 000f940f 170d012a 00000000 00006f0d 00000028 16f5080d 00000011 00000001 0002a1b1 16f5080d 00000020 00000001 00029ff1 16f5080d 00000031 00000001 0002a041 16fa034a 00000000 00000000 00000028 021f0cfe 00000000 00020001 002c0000 432d10ff 00000041 00000000 00150120 42b4053a 00000007 00150120 00000000 42b510ff 00000000 00150158 00000000 36130703 00000000 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 00150188 00150170 00000001 35fd10ff 00000001 00100000 00ca73ff 35fe09ce 00000001 00000000 00150120 361d04ea 00000001 00000001 001044df 362904ea 00150120 02000f04 040300c0 362e0302 00000002 00000000 00000065 0fb90302 00000000 00000000 00000003 16f20af6 0002a01c 0002a044 00000006 16f5080d 00000001 00000001 0002a044 16f5080d 00000010 00000001 0002a00e 16fa034a 00000001 00000000 0009fed1 021f0cfe 00000001 00020001 002c0000 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00150120 42b4053a 00000007 00150120 0001707f 42b510ff 00000000 00150158 00000000 36130703 00000001 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 00150188 00150170 00000001 361d04ea 00000002 00000001 02e14583 362904ea 00150120 02000f04 040300c0 362e0302 00000002 00000000 00000065 0fb90302 00000000 00000000 00000003 16f20af6 0002a01c 0002a03e 00000005 16f5080d 00000001 00000001 0002a03e 16fa034a 00000000 00000000 00000028 021f0cfe 00000002 00020001 002c0001 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00150120 42b4053a 00000007 00150120 00000000 42b510ff 00000000 00150158 00000000 36130703 00000002 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 00150188 00150170 00000001 361d04ea 00000003 00000001 02e2a627 021d00aa 0f000000 0420b180 0000004b 362904ea 00150120 02000f04 040300c0 362e0302 00000002 00000000 00000065 0fb90302 00000000 00000000 00000003 16f20af6 0002a01c 0002a041 00000005 16f5080d 00000001 00000001 0002a041 16fa034a 00000000 00000000 00000028 021f0cfe 00000003 00030001 002c0001 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00150120 Reading 50123 again: 31960cfe 050000a8 00002301 00000100 360200aa 02000f3c 00000021 00000008 315b05ca 00000000 00000000 0010200f 31810406 0000000f 00000061 00000000 021d00aa 0f000000 0420b180 0000004b 362904ea 00150120 02000f04 040300c0 362e0302 00000002 00000000 00000061 0fb90302 00000000 00000000 00000003 16f20af6 0002a01c 0002a244 0000003f 16f5080d 00000001 00000001 0002a244 16f5080d 00000010 00000001 00029ff5 16fa034a 00000000 00000000 00000028 021f0cfe 00000000 00020001 002c0000 432d10ff 00000041 00000000 00150120 42b4053a 00000007 00150120 00000000 42b510ff 00000000 00150158 00000000 36130703 00000000 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 00150188 00150170 00000001 35fd10ff 00000001 00100000 00ca73ff 35fe09ce 00000001 00000000 00150120 361d04ea 00000001 00000001 001044df 362904ea 00150120 02000f04 040300c0 362e0302 00000002 00000000 00000061 0fb90302 00000000 00000000 00000003 16f20af6 0002a01c 0002a044 00000006 16f5080d 00000001 00000001 0002a044 16f5080d 00000010 00000001 0002a00e 16fa034a 00000001 00000000 0009fed1 021f0cfe 00000001 00020001 002c0000 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00150120 42b4053a 00000007 00150120 00000000 42b510ff 00000000 00150158 00000000 36130703 00000001 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 00150188 00150170 00000001 361d04ea 00000002 00000001 03502c29 362904ea 00150120 02000f04 040300c0 362e0302 00000002 00000000 00000061 0fb90302 00000000 00000000 00000003 16f20af6 0002a01c 0002a03e 00000005 16f5080d 00000001 00000001 0002a03e 16fa034a 00000000 00000000 00000028 021f0cfe 00000002 00020001 002c0001 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00150120 42b4053a 00000007 00150120 0001a8a3 42b510ff 00000000 00150158 00000000 36130703 00000002 00000000 00000001 30dc034a 0000ffff 00000000 80000000 35cc09f2 00150188 00150170 00000001 361d04ea 00000003 00000001 03518e4f 021d00aa 0f000000 0420b180 0000004b 362904ea 00150120 02000f04 040300c0 362e0302 00000002 00000000 00000061 0fb90302 00000000 00000000 00000003 16f20af6 0002a01c 0002a041 00000005 16f5080d 00000001 00000001 0002a041 16fa034a 00000000 00000000 00000028 021f0cfe 00000003 00030001 002c0001 363004ea ffffffff 00000013 00000000 432d10ff 00000041 00000000 00150120 SCSI Eject: 31960cfe 0000001b 00000002 00000000 2fd0020a 00000000 00000002 0001ef75 3150012a 00000000 01ffb27f 000cb8e5 0f95012a 00000003 0000000c 02000628 0fb600aa 000000e0 20000013 00000203 16f20af6 00030300 0002a242 000002a8 16f5080d 00000000 00000001 0002a242 0df5012a 00000000 00000000 dff368eb 0df6026a 00000003 04206000 000f940f 170d012a 00000000 0000f8ce 00000028 16f5080d 00000010 00000001 0003001d 16f5080d 00000021 00000001 00030310 16f5080d 00000030 00000001 000302e8 16f5080d 00000041 00000001 00030301 16fa034a 00000000 00000000 00000028 0fb7026a ffffff1f 04206000 000a0035 2d0700aa 000000f7 02000c15 0008903d 0e4600aa 07973408 90000000 00000000 0e47020a 00000000 00000000 00084c6b 2d0700aa 000000f7 02000c15 00000000 0e4600aa 04002240 00000500 00000000 0e47020a 00000000 00000000 00084c6b 1001020a 00000082 00000020 0000001c 2fde012a 00000002 00000002 00000001 0e5400aa 01ffb76e 000000bf 00000000 2a2d012a 00000001 01ffb27f 0008562d 2a28031a 00000000 00000000 00010108 0df5012a 00000000 00000001 0000001c 0df6026a 00000001 04206000 000f940f 180f00aa 000000c4 01ffa07a 07973408 0df5012a 00000000 00000001 0000001c 0df6026a 0000002c 04206000 000f940f 141a00aa 01ffb8a3 01ffa2b4 01ffa3f9 136c00aa 01ffb8b6 01ffb8b4 00000000 136d012a 00000000 00000001 000855e9