Olha só, no caso do ZBT-633, a rotina que começa a inicialização do tuner é esta:
.text:00400310 sub_400310: # DATA XREF: sub_4003DC+D8_t
.text:00400310
.text:00400310 var_10 = -0x10
.text:00400310 var_8 = -8
.text:00400310 var_4 = -4
.text:00400310
.text:00400310 7B 00 1C 3C A0 53 9C 27 la $gp, unk_7B53A0 # mips_analyser
.text:00400318 21 E0 99 03 addu $gp, $t9
.text:0040031C E0 FF BD 27 addiu $sp, -0x20
.text:00400320 1C 00 BF AF sw $ra, 0x20+var_4($sp)
.text:00400324 18 00 B0 AF sw $s0, 0x20+var_8($sp)
.text:00400328 10 00 BC AF sw $gp, 0x20+var_10($sp)
.text:0040032C 28 80 90 8F lw $s0, offset a__SrcMain_c # "../src/main.c"
.text:00400330 28 80 84 8F lw $a0, offset aTunerInitStart # "tuner init start"
.text:00400334 0C 94 99 8F lw $t9, offset sub_4039EC
.text:00400338 A0 28 05 26 addiu $a1, $s0, 0x28A0 # "../src/main.c"
.text:0040033C B0 28 84 24 addiu $a0, 0x28B0 # "tuner init start"
.text:00400340 09 F8 20 03 jalr $t9
.text:00400344 37 00 06 24 li $a2, 0x37
.text:00400348 10 00 BC 8F lw $gp, 0x20+var_10($sp)
.text:0040034C 70 D5 99 8F lw $t9, offset sub_43B240 ## Inicializa tuner?
.text:00400350 09 F8 20 03 jalr $t9
.text:00400354 00 00 00 00 nop
.text:00400358 10 00 BC 8F lw $gp, 0x20+var_10($sp)
.text:0040035C A0 28 05 26 addiu $a1, $s0, 0x28A0
.text:00400360 39 00 06 24 li $a2, 0x39
.text:00400364 28 80 84 8F lw $a0, offset aTunerInitDone # "tuner init done"
.text:00400368 0C 94 99 8F lw $t9, offset sub_4039EC
.text:0040036C 09 F8 20 03 jalr $t9
.text:00400370 C4 28 84 24 addiu $a0, 0x28C4 # "tuner init done"
.text:00400374 10 00 BC 8F lw $gp, 0x20+var_10($sp)
.text:00400378 1C 00 BF 8F lw $ra, 0x20+var_4($sp)
.text:0040037C 18 00 B0 8F lw $s0, 0x20+var_8($sp)
.text:00400380 58 BF 82 8F lw $v0, 0xbb2eec
.text:00400384 B4 B3 99 8F lw $t9, offset sub_438598
.text:00400388 20 00 BD 27 addiu $sp, 0x20
.text:0040038C 08 00 20 03 jr $t9
.text:00400390 00 00 44 8C lw $a0, 0($v0)
.text:00400390 # End of function sub_400310
Se a gente seguir aquela chamada de inicialização, vemos isso (que possui as strings que você mencionou):
.text:0043B240 sub_43B240: # DATA XREF: sub_400310+3C_t
.text:0043B240 # .got:00BB2C20_o
.text:0043B240
.text:0043B240 var_30 = -0x30
.text:0043B240 var_28 = -0x28
.text:0043B240 var_24 = -0x24
.text:0043B240 var_20 = -0x20
.text:0043B240 var_1C = -0x1C
.text:0043B240 var_18 = -0x18
.text:0043B240 var_14 = -0x14
.text:0043B240 var_10 = -0x10
.text:0043B240 var_C = -0xC
.text:0043B240 var_8 = -8
.text:0043B240 var_4 = -4
.text:0043B240
.text:0043B240 78 00 1C 3C 70 A4 9C 27 la $gp, a7uD # mips_analyser
.text:0043B248 21 E0 99 03 addu $gp, $t9
.text:0043B24C C0 FF BD 27 addiu $sp, -0x40
.text:0043B250 3C 00 BF AF sw $ra, 0x40+var_4($sp)
.text:0043B254 38 00 BE AF sw $fp, 0x40+var_8($sp)
.text:0043B258 34 00 B7 AF sw $s7, 0x40+var_C($sp)
.text:0043B25C 30 00 B6 AF sw $s6, 0x40+var_10($sp)
.text:0043B260 2C 00 B5 AF sw $s5, 0x40+var_14($sp)
.text:0043B264 28 00 B4 AF sw $s4, 0x40+var_18($sp)
.text:0043B268 24 00 B3 AF sw $s3, 0x40+var_1C($sp)
.text:0043B26C 20 00 B2 AF sw $s2, 0x40+var_20($sp)
.text:0043B270 1C 00 B1 AF sw $s1, 0x40+var_24($sp)
.text:0043B274 18 00 B0 AF sw $s0, 0x40+var_28($sp)
.text:0043B278 10 00 BC AF sw $gp, 0x40+var_30($sp)
.text:0043B27C 2C 80 82 8F lw $v0, 0xbc38a8
.text:0043B280 DC 9F 99 8F lw $t9, offset sub_664A60
.text:0043B284 21 28 00 00 move $a1, $0
.text:0043B288 A8 38 50 24 addiu $s0, $v0, 0x38A8
.text:0043B28C 78 00 06 24 li $a2, 0x78
.text:0043B290 09 F8 20 03 jalr $t9
.text:0043B294 21 20 00 02 move $a0, $s0
.text:0043B298 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B29C 50 80 82 8F lw $v0, offset sub_43B0D0
.text:0043B2A0 2C 80 96 8F lw $s6, 0xbc38a1
.text:0043B2A4 D0 B0 51 24 addiu $s1, $v0, 0xB0D0
.text:0043B2A8 21 C8 20 02 move $t9, $s1
.text:0043B2AC 09 F8 20 03 jalr $t9
.text:0043B2B0 0C 00 14 24 li $s4, 0xC
.text:0043B2B4 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B2B8 28 80 84 8F lw $a0, offset aZw_frontend_in # ">> zw_frontend_init -->"
.text:0043B2BC 98 88 99 8F lw $t9, offset sub_65EB40
.text:0043B2C0 09 F8 20 03 jalr $t9
.text:0043B2C4 B0 76 84 24 addiu $a0, 0x76B0 # ">> zw_frontend_init -->"
.text:0043B2C8 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B2CC 28 80 84 8F lw $a0, offset aZw_tc90517_reg # "zw_tc90517_register"
.text:0043B2D0 98 88 99 8F lw $t9, offset sub_65EB40
.text:0043B2D4 09 F8 20 03 jalr $t9
.text:0043B2D8 C8 76 84 24 addiu $a0, 0x76C8 # "zw_tc90517_register"
.text:0043B2DC 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B2E0 21 20 00 02 move $a0, $s0
.text:0043B2E4 A0 94 99 8F lw $t9, offset sub_42AEF0
.text:0043B2E8 09 F8 20 03 jalr $t9
.text:0043B2EC A1 38 C5 26 addiu $a1, $s6, 0x38A1
.text:0043B2F0 01 00 03 24 li $v1, 1
.text:0043B2F4 4D 00 43 10 beq $v0, $v1, loc_43B42C
.text:0043B2F8 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B2FC
.text:0043B2FC loc_43B2FC: # CODE XREF: sub_43B240+218_j
.text:0043B2FC A1 38 C2 92 lbu $v0, 0x38A1($s6)
.text:0043B300 44 00 40 10 beqz $v0, loc_43B414
.text:0043B304 28 80 84 8F lw $a0, offset sub_670000
.text:0043B308
.text:0043B308 loc_43B308: # CODE XREF: sub_43B240+1E4_j
.text:0043B308 FF 00 42 30 andi $v0, 0xFF
.text:0043B30C 34 00 40 10 beqz $v0, loc_43B3E0
.text:0043B310 21 90 00 00 move $s2, $0
.text:0043B314 21 F0 00 02 move $fp, $s0
.text:0043B318 00 11 12 00 sll $v0, $s2, 4
.text:0043B31C
.text:0043B31C loc_43B31C: # CODE XREF: sub_43B240+198_j
.text:0043B31C 23 10 52 00 subu $v0, $s2
.text:0043B320 80 10 02 00 sll $v0, 2
.text:0043B324 21 10 5E 00 addu $v0, $fp
.text:0043B328 10 00 43 8C lw $v1, 0x10($v0)
.text:0043B32C 26 00 60 10 beqz $v1, loc_43B3C8
.text:0043B330 00 00 00 00 nop
.text:0043B334 24 00 80 12 beqz $s4, loc_43B3C8
.text:0043B338 00 00 00 00 nop
.text:0043B33C 21 80 40 00 move $s0, $v0
.text:0043B340 01 00 13 24 li $s3, 1
.text:0043B344 28 80 95 8F lw $s5, offset sub_670000
.text:0043B348 20 80 82 8F lw $v0, offset 0x7f83b8
.text:0043B34C B8 83 42 24 addiu $v0, 0x83B8
.text:0043B350 06 00 00 10 b loc_43B36C
.text:0043B354 00 00 57 8C lw $s7, 0($v0)
.text:0043B358 # ---------------------------------------------------------------------------
.text:0043B358
.text:0043B358 loc_43B358: # CODE XREF: sub_43B240+14C_j
.text:0043B358 FF FF 82 26 addiu $v0, $s4, 0xFFFF
.text:0043B35C 1A 00 33 16 bne $s1, $s3, loc_43B3C8
.text:0043B360 FF 00 54 30 andi $s4, $v0, 0xFF
.text:0043B364
.text:0043B364 loc_43B364: # CODE XREF: sub_43B240+180_j
.text:0043B364 19 00 80 12 beqz $s4, loc_43B3CC
.text:0043B368 A1 38 C2 92 lbu $v0, 0x38A1($s6)
.text:0043B36C
.text:0043B36C loc_43B36C: # CODE XREF: sub_43B240+110_j
.text:0043B36C 00 00 04 92 lbu $a0, 0($s0)
.text:0043B370 10 00 19 8E lw $t9, 0x10($s0)
.text:0043B374 09 F8 20 03 jalr $t9
.text:0043B378 01 00 05 92 lbu $a1, 1($s0)
.text:0043B37C 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B380 21 88 40 00 move $s1, $v0
.text:0043B384 FC 76 A4 26 addiu $a0, $s5, 0x76FC
.text:0043B388 28 8A 99 8F lw $t9, offset sub_65ECD0
.text:0043B38C F2 FF 53 14 bne $v0, $s3, loc_43B358
.text:0043B390 21 28 40 02 move $a1, $s2
.text:0043B394 09 F8 20 03 jalr $t9
.text:0043B398 00 00 00 00 nop
.text:0043B39C 21 C8 E0 02 move $t9, $s7
.text:0043B3A0 09 F8 20 03 jalr $t9
.text:0043B3A4 00 00 00 00 nop
.text:0043B3A8 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B3AC 40 BE 99 8F lw $t9, offset sub_438364
.text:0043B3B0 09 F8 20 03 jalr $t9
.text:0043B3B4 64 00 04 24 li $a0, 0x64
.text:0043B3B8 FF FF 82 26 addiu $v0, $s4, 0xFFFF
.text:0043B3BC 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B3C0 E8 FF 33 12 beq $s1, $s3, loc_43B364
.text:0043B3C4 FF 00 54 30 andi $s4, $v0, 0xFF
.text:0043B3C8
.text:0043B3C8 loc_43B3C8: # CODE XREF: sub_43B240+EC_j
.text:0043B3C8 # sub_43B240+F4_j ...
.text:0043B3C8 A1 38 C2 92 lbu $v0, 0x38A1($s6)
.text:0043B3CC
.text:0043B3CC loc_43B3CC: # CODE XREF: sub_43B240:loc_43B364_j
.text:0043B3CC 01 00 43 26 addiu $v1, $s2, 1
.text:0043B3D0 FF 00 72 30 andi $s2, $v1, 0xFF
.text:0043B3D4 2B 10 42 02 sltu $v0, $s2, $v0
.text:0043B3D8 D0 FF 40 14 bnez $v0, loc_43B31C
.text:0043B3DC 00 11 12 00 sll $v0, $s2, 4
.text:0043B3E0
.text:0043B3E0 loc_43B3E0: # CODE XREF: sub_43B240+CC_j
.text:0043B3E0 3C 00 BF 8F lw $ra, 0x40+var_4($sp)
.text:0043B3E4 38 00 BE 8F lw $fp, 0x40+var_8($sp)
.text:0043B3E8 34 00 B7 8F lw $s7, 0x40+var_C($sp)
.text:0043B3EC 30 00 B6 8F lw $s6, 0x40+var_10($sp)
.text:0043B3F0 2C 00 B5 8F lw $s5, 0x40+var_14($sp)
.text:0043B3F4 28 00 B4 8F lw $s4, 0x40+var_18($sp)
.text:0043B3F8 24 00 B3 8F lw $s3, 0x40+var_1C($sp)
.text:0043B3FC 20 00 B2 8F lw $s2, 0x40+var_20($sp)
.text:0043B400 1C 00 B1 8F lw $s1, 0x40+var_24($sp)
.text:0043B404 18 00 B0 8F lw $s0, 0x40+var_28($sp)
.text:0043B408 21 10 00 00 move $v0, $0
.text:0043B40C 08 00 E0 03 jr $ra
.text:0043B410 40 00 BD 27 addiu $sp, 0x40
.text:0043B414 # ---------------------------------------------------------------------------
.text:0043B414
.text:0043B414 loc_43B414: # CODE XREF: sub_43B240+C0_j
.text:0043B414 98 88 99 8F lw $t9, offset sub_65EB40
.text:0043B418 09 F8 20 03 jalr $t9
.text:0043B41C DC 76 84 24 addiu $a0, 0x76DC
.text:0043B420 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B424 B8 FF 00 10 b loc_43B308
.text:0043B428 A1 38 C2 92 lbu $v0, 0x38A1($s6)
.text:0043B42C # ---------------------------------------------------------------------------
.text:0043B42C
.text:0043B42C loc_43B42C: # CODE XREF: sub_43B240+B4_j
.text:0043B42C 28 80 84 8F lw $a0, offset aZw_tc90507_reg # "zw_tc90507_register"
.text:0043B430 98 88 99 8F lw $t9, offset sub_65EB40
.text:0043B434 09 F8 20 03 jalr $t9
.text:0043B438 18 77 84 24 addiu $a0, 0x7718 # "zw_tc90507_register"
.text:0043B43C 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B440 21 20 00 02 move $a0, $s0
.text:0043B444 8C 85 99 8F lw $t9, offset sub_42CC74
.text:0043B448 09 F8 20 03 jalr $t9
.text:0043B44C A1 38 C5 26 addiu $a1, $s6, 0x38A1
.text:0043B450 10 00 BC 8F lw $gp, 0x40+var_30($sp)
.text:0043B454 40 00 03 24 li $v1, 0x40
.text:0043B458 A8 FF 00 10 b loc_43B2FC
.text:0043B45C 01 00 03 A2 sb $v1, 1($s0)
.text:0043B45C # End of function sub_43B240
.text:0043B45C
As strings são importantes para nos indicar que estamos no local certo. Mas é mais importante seguirmos as chamadas que devem nos levar às rotinas reais de inicialização, como por exemplo a que está em sub_42AEF0. Segue seu início:
.text:0042AEF0 sub_42AEF0: # DATA XREF: sub_43B240+A4_t
.text:0042AEF0 # .got:00BAEB50_o
.text:0042AEF0
.text:0042AEF0 var_20 = -0x20
.text:0042AEF0 var_18 = -0x18
.text:0042AEF0 var_14 = -0x14
.text:0042AEF0 var_10 = -0x10
.text:0042AEF0 var_C = -0xC
.text:0042AEF0 var_8 = -8
.text:0042AEF0
.text:0042AEF0 79 00 1C 3C C0 A7 9C 27 la $gp, unk_78A7C0 # mips_analyser
.text:0042AEF8 21 E0 99 03 addu $gp, $t9
.text:0042AEFC D0 FF BD 27 addiu $sp, -0x30
.text:0042AF00 28 00 BF AF sw $ra, 0x30+var_8($sp)
.text:0042AF04 24 00 B3 AF sw $s3, 0x30+var_C($sp)
.text:0042AF08 20 00 B2 AF sw $s2, 0x30+var_10($sp)
.text:0042AF0C 1C 00 B1 AF sw $s1, 0x30+var_14($sp)
.text:0042AF10 18 00 B0 AF sw $s0, 0x30+var_18($sp)
.text:0042AF14 10 00 BC AF sw $gp, 0x30+var_20($sp)
.text:0042AF18 10 D6 99 8F lw $t9, offset sub_42C588
.text:0042AF1C 21 90 80 00 move $s2, $a0
.text:0042AF20 09 F8 20 03 jalr $t9
.text:0042AF24 21 88 A0 00 move $s1, $a1
.text:0042AF28 01 00 13 24 li $s3, 1
.text:0042AF2C 9C 00 40 14 bnez $v0, loc_42B1A0
.text:0042AF30 10 00 BC 8F lw $gp, 0x30+var_20($sp)
.text:0042AF34 00 00 22 92 lbu $v0, 0($s1)
.text:0042AF38 DC 9F 99 8F lw $t9, offset sub_664A60
.text:0042AF3C 2C 80 90 8F lw $s0, 0xbc2760
.text:0042AF40 00 21 02 00 sll $a0, $v0, 4
.text:0042AF44 23 20 82 00 subu $a0, $v0
.text:0042AF48 80 20 04 00 sll $a0, 2
.text:0042AF4C 21 20 92 00 addu $a0, $s2
.text:0042AF50 3C 00 06 24 li $a2, 0x3C
.text:0042AF54 09 F8 20 03 jalr $t9
.text:0042AF58 21 28 00 00 move $a1, $0
.text:0042AF5C 10 00 BC 8F lw $gp, 0x30+var_20($sp)
.text:0042AF60 60 27 05 92 lbu $a1, 0x2760($s0)
.text:0042AF64 2C 80 82 8F lw $v0, 0xbc276c
.text:0042AF68 FF 00 A3 30 andi $v1, $a1, 0xFF
.text:0042AF6C 00 19 03 00 sll $v1, 4
.text:0042AF70 6C 27 42 24 addiu $v0, 0x276C
.text:0042AF74 21 18 62 00 addu $v1, $v0
.text:0042AF78 00 00 65 A0 sb $a1, 0($v1)
.text:0042AF7C 00 00 24 92 lbu $a0, 0($s1)
.text:0042AF80 28 8A 99 8F lw $t9, offset sub_65ECD0
.text:0042AF84 00 11 04 00 sll $v0, $a0, 4
.text:0042AF88 23 10 44 00 subu $v0, $a0
.text:0042AF8C 80 10 02 00 sll $v0, 2
.text:0042AF90 21 10 52 00 addu $v0, $s2
.text:0042AF94 00 00 45 A0 sb $a1, 0($v0)
.text:0042AF98 00 00 23 92 lbu $v1, 0($s1)
.text:0042AF9C 00 11 03 00 sll $v0, $v1, 4
.text:0042AFA0 23 10 43 00 subu $v0, $v1
.text:0042AFA4 80 10 02 00 sll $v0, 2
.text:0042AFA8 21 10 52 00 addu $v0, $s2
.text:0042AFAC 09 00 03 24 li $v1, 9
.text:0042AFB0 02 00 43 A0 sb $v1, 2($v0)
.text:0042AFB4 00 00 24 92 lbu $a0, 0($s1)
.text:0042AFB8 00 11 04 00 sll $v0, $a0, 4
.text:0042AFBC 23 10 44 00 subu $v0, $a0
.text:0042AFC0 80 10 02 00 sll $v0, 2
.text:0042AFC4 21 10 52 00 addu $v0, $s2
.text:0042AFC8 03 00 40 A0 sb $0, 3($v0)
.text:0042AFCC 00 00 23 92 lbu $v1, 0($s1)
.text:0042AFD0 00 11 03 00 sll $v0, $v1, 4
.text:0042AFD4 23 10 43 00 subu $v0, $v1
.text:0042AFD8 80 10 02 00 sll $v0, 2
.text:0042AFDC 21 10 52 00 addu $v0, $s2
.text:0042AFE0 04 00 53 A0 sb $s3, 4($v0)
.text:0042AFE4 00 00 23 92 lbu $v1, 0($s1)
.text:0042AFE8 00 11 03 00 sll $v0, $v1, 4
.text:0042AFEC 23 10 43 00 subu $v0, $v1
.text:0042AFF0 80 10 02 00 sll $v0, 2
.text:0042AFF4 21 10 52 00 addu $v0, $s2
.text:0042AFF8 05 00 53 A0 sb $s3, 5($v0)
.text:0042AFFC 00 00 23 92 lbu $v1, 0($s1)
.text:0042B000 60 27 05 92 lbu $a1, 0x2760($s0)
.text:0042B004 21 98 00 00 move $s3, $0
.text:0042B008 00 11 03 00 sll $v0, $v1, 4
.text:0042B00C 23 10 43 00 subu $v0, $v1
.text:0042B010 80 10 02 00 sll $v0, 2
.text:0042B014 21 10 52 00 addu $v0, $s2
.text:0042B018 DC 05 03 24 li $v1, 0x5DC
.text:0042B01C 0C 00 43 AC sw $v1, 0xC($v0)
.text:0042B020 00 00 24 92 lbu $a0, 0($s1)
.text:0042B024 44 80 83 8F lw $v1, offset sub_42B1D4
.text:0042B028 00 11 04 00 sll $v0, $a0, 4
.text:0042B02C 23 10 44 00 subu $v0, $a0
.text:0042B030 80 10 02 00 sll $v0, 2
.text:0042B034 21 10 52 00 addu $v0, $s2
.text:0042B038 D4 B1 63 24 addiu $v1, 0xB1D4
.text:0042B03C 10 00 43 AC sw $v1, 0x10($v0)
.text:0042B040 00 00 24 92 lbu $a0, 0($s1)
.text:0042B044 44 80 83 8F lw $v1, offset sub_42B220
.text:0042B048 00 11 04 00 sll $v0, $a0, 4
.text:0042B04C 23 10 44 00 subu $v0, $a0
.text:0042B050 80 10 02 00 sll $v0, 2
.text:0042B054 21 10 52 00 addu $v0, $s2
.text:0042B058 20 B2 63 24 addiu $v1, 0xB220
.text:0042B05C 14 00 43 AC sw $v1, 0x14($v0)
.text:0042B060 00 00 24 92 lbu $a0, 0($s1)
.text:0042B064 44 80 83 8F lw $v1, offset sub_42B6BC
.text:0042B068 00 11 04 00 sll $v0, $a0, 4
.text:0042B06C 23 10 44 00 subu $v0, $a0
.text:0042B070 80 10 02 00 sll $v0, 2
.text:0042B074 21 10 52 00 addu $v0, $s2
.text:0042B078 BC B6 63 24 addiu $v1, 0xB6BC
.text:0042B07C 1C 00 43 AC sw $v1, 0x1C($v0)
.text:0042B080 00 00 24 92 lbu $a0, 0($s1)
.text:0042B084 44 80 83 8F lw $v1, offset sub_42B2CC
.text:0042B088 00 11 04 00 sll $v0, $a0, 4
.text:0042B08C 23 10 44 00 subu $v0, $a0
.text:0042B090 80 10 02 00 sll $v0, 2
.text:0042B094 21 10 52 00 addu $v0, $s2
.text:0042B098 CC B2 63 24 addiu $v1, 0xB2CC
.text:0042B09C 20 00 43 AC sw $v1, 0x20($v0)
.text:0042B0A0 00 00 24 92 lbu $a0, 0($s1)
.text:0042B0A4 44 80 83 8F lw $v1, offset sub_42B414
.text:0042B0A8 00 11 04 00 sll $v0, $a0, 4
.text:0042B0AC 23 10 44 00 subu $v0, $a0
.text:0042B0B0 80 10 02 00 sll $v0, 2
.text:0042B0B4 21 10 52 00 addu $v0, $s2
.text:0042B0B8 14 B4 63 24 addiu $v1, 0xB414
.text:0042B0BC 24 00 43 AC sw $v1, 0x24($v0)
.text:0042B0C0 00 00 26 92 lbu $a2, 0($s1)
.text:0042B0C4 44 80 83 8F lw $v1, offset sub_42B49C
.text:0042B0C8 28 80 84 8F lw $a0, offset aDemod_I2cDevic # "Demod. I2C Device 0x30 and tuner 0xC2 v"...
.text:0042B0CC 00 11 06 00 sll $v0, $a2, 4
.text:0042B0D0 23 10 46 00 subu $v0, $a2
.text:0042B0D4 80 10 02 00 sll $v0, 2
.text:0042B0D8 21 10 52 00 addu $v0, $s2
.text:0042B0DC 9C B4 63 24 addiu $v1, 0xB49C
.text:0042B0E0 28 00 43 AC sw $v1, 0x28($v0)
.text:0042B0E4 00 00 26 92 lbu $a2, 0($s1)
.text:0042B0E8 44 80 83 8F lw $v1, offset sub_42B524
.text:0042B0EC 44 5B 84 24 addiu $a0, 0x5B44 # "Demod. I2C Device 0x30 and tuner 0xC2 v"...
.text:0042B0F0 00 11 06 00 sll $v0, $a2, 4
.text:0042B0F4 23 10 46 00 subu $v0, $a2
.text:0042B0F8 80 10 02 00 sll $v0, 2
.text:0042B0FC 21 10 52 00 addu $v0, $s2
.text:0042B100 24 B5 63 24 addiu $v1, 0xB524
.text:0042B104 2C 00 43 AC sw $v1, 0x2C($v0)
.text:0042B108 00 00 26 92 lbu $a2, 0($s1)
..............
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Se isso for a inicialização do tuner do ZBT-633 e no SEMP tiver uma rotina igual, então é possível fazer uma adaptação. O problema é que talvez, como você apontou, possam existir várias fases de inicialização. Aí seriam várias rotinas.