437 lines
16 KiB
Plaintext
437 lines
16 KiB
Plaintext
/*
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ROM functions used:
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0x8000 dsp reset
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0x8078 wait for CMBH & 0x8000
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0x807e wait for DMBH & 0x8000
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0x808b dump DRAM/IRAM to mainmem
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0x80b5 boot new ucode
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0x80bc boot new ucode without ACC clearing by ROM
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For the rest, this ucode is just calling the last few instructions
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from huge functions in ROM - some kind of obfuscation?
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0x81f4
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81f4 b51e mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
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81f5 9909 asr16'ir $ACC1 : $AR1
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81f6 1b7f srri @$AR3, $AC1.M
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81f7 812b clr's $ACC0 : @$AR3, $AC1.L
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0x8458
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8458 b51e mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
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8459 9900 asr16 $ACC1
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845a 1b7f srri @$AR3, $AC1.M
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845b 812b clr's $ACC0 : @$AR3, $AC1.L
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0x8723
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8723 3300 xorr $AC1.M, $AX1.H
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8724 1adf srrd @$AR2, $AC1.M
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0x8809
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8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
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880a 1b5f srri @$AR2, $AC1.M
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0x88e5
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88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
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88e6 18dd lrrd $AC1.L, @$AR2
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88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
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88e8 1b5e srri @$AR2, $AC0.M
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88e9 1a5c srr @$AR2, $AC0.L
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*/
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0000 0000 nop
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0001 0000 nop
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0002 0000 nop
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0003 0000 nop
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0004 0000 nop
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0005 0000 nop
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0006 0000 nop
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0007 0000 nop
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0008 0000 nop
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0009 0000 nop
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000a 0000 nop
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000b 0000 nop
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000c 0000 nop
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000d 0021 halt
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000e 02ff rti
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000f 0021 halt
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0010 1306 sbset #0x06
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0011 1203 sbclr #0x03
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0012 1204 sbclr #0x04
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0013 1305 sbset #0x05
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0014 0092 00ff lri $CR, #0x00ff
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0016 0088 ffff lri $WR0, #0xffff
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0018 0089 ffff lri $WR1, #0xffff
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001a 008a ffff lri $WR2, #0xffff
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001c 008b ffff lri $WR3, #0xffff
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001e 8f00 set40
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001f 8b00 m0
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0020 8c00 clr15
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0021 02bf 807e call 0x807e // loop until dsp->cpu mailbox is empty
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0023 16fc dcd1 si @DMBH, #0xdcd1
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0025 16fd 0000 si @DMBL, #0x0000 // sendmail 0xdcd10000
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0027 16fb 0001 si @DIRQ, #0x0001
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// wait for cpu mail == 0xabbaxxxx
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0029 02bf 8078 call 0x8078 // wait for cpu mail
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002b 24ff lrs $AC0.L, @CMBL
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002c 0280 abba cmpi $AC0.M, #0xabba
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002e 0294 0029 jnz 0x0029
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// wait for cpu mail
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0030 8e00 set16
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0031 02bf 8078 call 0x8078
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0033 20ff lrs $AX0.L, @CMBL
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0034 0240 0fff andi $AC0.M, #0x0fff
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0036 1f5e mrr $AX0.H, $AC0.M
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0037 009b 0000 lri $AX1.H, #0x0000 // DSP-dram addr
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0039 0099 0020 lri $AX1.L, #0x0020 // length (20 bytes = 10 words, word 9 and 10 are addr where result should DMA'd to in main mem)
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003b 0087 0000 lri $IX3, #0x0000 // there will be no ucode/iram upload
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003d 0080 0041 lri $AR0, #0x0041 // return addr after dram upload
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003f 029f 80bc jmp 0x80bc // DRAM upload !!
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// $AX0.H-$AX0.L - CPU(PPC) addr = mail & 0x0fffffff
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// upload data from mainmem do dsp dram and jump to 0x41 after that
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0041 02bf 008c call 008c_BigCrazyFunction() // <<------------- main crap is here!!!!!!!!!
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0043 02bf 807e call 0x807e // loop until dsp->cpu mailbox is empty
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0045 16fc dcd1 si @DMBH, #0xdcd1
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0047 16fd 0003 si @DMBL, #0x0003 // sendmail 0xdcd10003 (aka... calc is over, result is in main mem now)
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0049 16fb 0001 si @DIRQ, #0x0001
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004b 8f00 set40
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004c 02bf 8078 call 0x8078
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004e 0280 cdd1 cmpi $AC0.M, #0xcdd1
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0050 0294 004c jnz 0x004c
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0052 26ff lrs $AC0.M, @CMBL
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0053 0280 0001 cmpi $AC0.M, #0x0001
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0055 0295 005e jz 0x005e // if cpu->dsp mail was 0xcdd10001 -> 005e_PrepareBootUcode()
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0057 0280 0002 cmpi $AC0.M, #0x0002
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0059 0295 8000 jz 0x8000 // if cpu->dsp mail was 0xcdd10002 -> dsp reset ( jmp to irom(0x8000))
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005b 029f 004c jmp 0x004c // wait for next mail from cpu
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005d 0021 halt
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void 005e_PrepareBootUcode()
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{
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005e 8e00 set16
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005f 02bf 8078 call 0x8078 // wait for cpu mail
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0061 24ff lrs $AC0.L, @CMBL
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0062 02bf 8078 call 0x8078 // wait for cpu mail
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0064 24ff lrs $AC0.L, @CMBL
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0065 02bf 8078 call 0x8078 // wait for cpu mail
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0067 24ff lrs $AC0.L, @CMBL
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0068 02bf 8078 call 0x8078 // wait for cpu mail
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006a 00c5 ffff lr $IX1, @CMBL
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006c 0240 0fff andi $AC0.M, #0x0fff
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006e 1c9e mrr $IX0, $AC0.M
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006f 02bf 8078 call 0x8078 // wait for cpu mail
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0071 00c7 ffff lr $IX3, @CMBL
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0073 02bf 8078 call 0x8078 // wait for cpu mail
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0075 00c6 ffff lr $IX2, @CMBL
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0077 02bf 8078 call 0x8078 // wait for cpu mail
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0079 00c0 ffff lr $AR0, @CMBL
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007b 02bf 8078 call 0x8078 // wait for cpu mail
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007d 20ff lrs $AX0.L, @CMBL
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007e 0240 0fff andi $AC0.M, #0x0fff
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0080 1f5e mrr $AX0.H, $AC0.M
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0081 02bf 8078 call 0x8078 // wait for cpu mail
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0083 21ff lrs $AX1.L, @CMBL
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0084 02bf 8078 call 0x8078 // wait for cpu mail
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0086 23ff lrs $AX1.H, @CMBL
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0087 1205 sbclr #0x05
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0088 1206 sbclr #0x06
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0089 029f 80b5 jmp 80b5_BootUcode()
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008b 0021 halt
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}
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// does some crazy stuff with data at dram @0x3/0x5/0x6/0x7 with help of some values from drom :)
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// result is @0x22,@0x23 and written back to main memory to dmem-0x08:dmem-0x09
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void 008c_BigCrazyFunction()
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{
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008c 8100 clr $ACC0
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008d 0081 0010 lri $AR1, #0x0010
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008f 1020 loopi #0x20
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0090 1b3e srri @$AR1, $AC0.M
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0091 00df 1456 lr $AC1.M, @0x1456
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0093 0340 ffd0 andi $AC1.M, #0xffd0
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0095 8417 clrp'mv : $AX1.L, $AC1.M
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0096 0080 0000 lri $AR0, #0x0000
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0098 0086 0000 lri $IX2, #0x0000
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009a 0082 001f lri $AR2, #0x001f
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009c 00de 15f6 lr $AC0.M, @0x15f6
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009e 1408 lsl $ACC0, #8
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009f 00df 1766 lr $AC1.M, @0x1766
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00a1 0340 00ff andi $AC1.M, #0x00ff
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00a3 1f5f mrr $AX0.H, $AC1.M
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00a4 02bf 88e5 call 0x88e5
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88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
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88e6 18dd lrrd $AC1.L, @$AR2
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88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
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88e8 1b5e srri @$AR2, $AC0.M
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88e9 1a5c srr @$AR2, $AC0.L
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00a6 1f1c mrr $AX0.L, $AC0.L
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00a7 811e clr'mv $ACC0 : $AX1.H, $AC0.M
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00a8 191e lrri $AC0.M, @$AR0
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00a9 1478 lsr $ACC0, #-8
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00aa 1ffc mrr $AC1.M, $AC0.L
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00ab 1f5e mrr $AX0.H, $AC0.M
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00ac 02bf 8809 call 0x8809
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8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
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880a 1b5f srri @$AR2, $AC1.M
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00ae 02bf 8723 call 0x8723
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8723 3300 xorr $AC1.M, $AX1.H
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8724 1adf srrd @$AR2, $AC1.M
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00b0 0006 dar $AR2
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00b1 8106 clr'dr $ACC0 : $AR2
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00b2 00de 166c lr $AC0.M, @0x166c
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00b4 1404 lsl $ACC0, #4
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00b5 0240 ff00 andi $AC0.M, #0xff00
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00b7 00df 1231 lr $AC1.M, @0x1231
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00b9 1578 lsr $ACC1, #-8
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00ba 0340 00ff andi $AC1.M, #0x00ff
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00bc 1f5f mrr $AX0.H, $AC1.M
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00bd 02bf 88e5 call 0x88e5
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88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
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88e6 18dd lrrd $AC1.L, @$AR2
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88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
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88e8 1b5e srri @$AR2, $AC0.M
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88e9 1a5c srr @$AR2, $AC0.L
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00bf 1f1c mrr $AX0.L, $AC0.L
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00c0 811e clr'mv $ACC0 : $AX1.H, $AC0.M
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00c1 191e lrri $AC0.M, @$AR0
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00c2 1478 lsr $ACC0, #-8
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00c3 1ffc mrr $AC1.M, $AC0.L
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00c4 1f5e mrr $AX0.H, $AC0.M
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00c5 02bf 8809 call 0x8809
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8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
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880a 1b5f srri @$AR2, $AC1.M
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00c7 02bf 8723 call 0x8723
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8723 3300 xorr $AC1.M, $AX1.H
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8724 1adf srrd @$AR2, $AC1.M
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00c9 8100 clr $ACC0
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00ca 8900 clr $ACC1
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00cb 00d1 0005 lr $AC1.H, @0x0005
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00cd 9900 asr16 $ACC1
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00ce 8200 cmp
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00cf 0295 00e5 jz 0x00e5
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00d1 0291 00f3 jl 0x00f3
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00d3 0082 0010 lri $AR2, #0x0010
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00d5 0086 0001 lri $IX2, #0x0001
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00d7 00d0 171b lr $AC0.H, @0x171b
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00d9 9100 asr16 $ACC0
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00da 7d00 neg $ACC1
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00db 4d00 add $ACC1, $ACC0
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00dc 1501 lsl $ACC1, #1
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00dd 1f5f mrr $AX0.H, $AC1.M
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00de 00df 0003 lr $AC1.M, @0x0003
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00e0 1504 lsl $ACC1, #4
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00e1 02bf 8809 call 0x8809
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8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
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880a 1b5f srri @$AR2, $AC1.M
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00e3 029f 0102 jmp 0x0102
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:
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00e5 0082 0011 lri $AR2, #0x0011
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00e7 00df 0003 lr $AC1.M, @0x0003
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00e9 1501 lsl $ACC1, #1
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00ea 1f5f mrr $AX0.H, $AC1.M
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00eb 00de 1043 lr $AC0.M, @0x1043
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00ed 0240 fff0 andi $AC0.M, #0xfff0
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00ef 02bf 88e5 call 0x88e5
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88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
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88e6 18dd lrrd $AC1.L, @$AR2
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88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
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88e8 1b5e srri @$AR2, $AC0.M
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88e9 1a5c srr @$AR2, $AC0.L
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00f1 029f 0102 jmp 0x0102
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:
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00f3 0082 0010 lri $AR2, #0x0010
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00f5 0086 0001 lri $IX2, #0x0001
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00f7 00d0 1285 lr $AC0.H, @0x1285
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00f9 9100 asr16 $ACC0
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00fa 4d00 add $ACC1, $ACC0
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00fb 1501 lsl $ACC1, #1
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00fc 00de 0003 lr $AC0.M, @0x0003
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00fe 1404 lsl $ACC0, #4
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00ff 1f5e mrr $AX0.H, $AC0.M
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0100 02bf 8809 call 0x8809
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8809 392e orr'sn $AC1.M, $AX0.H : @$AR2, $AC1.L
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880a 1b5f srri @$AR2, $AC1.M
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:
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0102 0083 0013 lri $AR3, #0x0013
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0104 1b7e srri @$AR3, $AC0.M
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0105 8923 clr's $ACC1 : @$AR3, $AC0.L
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0106 0083 0013 lri $AR3, #0x0013
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0108 00df 0007 lr $AC1.M, @0x0007
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010a 00de 11b8 lr $AC0.M, @0x11b8
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010c 0240 fff0 andi $AC0.M, #0xfff0
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010e 1f5e mrr $AX0.H, $AC0.M
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010f 02bf 81f4 call 0x81f4
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81f4 b51e mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
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81f5 9909 asr16'ir $ACC1 : $AR1
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81f6 1b7f srri @$AR3, $AC1.M
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81f7 812b clr's $ACC0 : @$AR3, $AC1.L
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0111 f100 lsl16 $ACC1
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0112 02bf 8458 call 0x8458
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8458 b51e mulxac'mv $AX0.H, $AX1.L, $ACC1 : $AX1.H, $AC0.M
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8459 9900 asr16 $ACC1
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845a 1b7f srri @$AR3, $AC1.M
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845b 812b clr's $ACC0 : @$AR3, $AC1.L
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0114 8f00 set40
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0115 0082 0015 lri $AR2, #0x0015
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0117 00de 0006 lr $AC0.M, @0x0006
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0119 00da 165b lr $AX0.H, @0x165b
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011b 02bf 88e5 call 0x88e5
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88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
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88e6 18dd lrrd $AC1.L, @$AR2
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88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
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88e8 1b5e srri @$AR2, $AC0.M
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88e9 1a5c srr @$AR2, $AC0.L
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011d 14fd asr $ACC0, #-3
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011e 1403 lsl $ACC0, #3
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011f 1b5e srri @$AR2, $AC0.M
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0120 1b5c srri @$AR2, $AC0.L
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0121 0082 0016 lri $AR2, #0x0016
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0123 00de 1723 lr $AC0.M, @0x1723
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0125 14f4 asr $ACC0, #-12
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0126 00da 166b lr $AX0.H, @0x166b
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0128 02bf 88e5 call 0x88e5
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88e5 387a orr'l $AC0.M, $AX0.H : $AC1.M, @$AR2
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88e6 18dd lrrd $AC1.L, @$AR2
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88e7 4c05 add'dr $ACC0, $ACC1 : $AR1
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88e8 1b5e srri @$AR2, $AC0.M
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88e9 1a5c srr @$AR2, $AC0.L
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012a b100 tst $ACC0
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012b 0290 012e jge 0x012e
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012d 8100 clr $ACC0
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:
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012e 14fd asr $ACC0, #-3
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012f 8e00 set16
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0130 00df 1491 lr $AC1.M, @0x1491
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0132 0340 d0f0 andi $AC1.M, #0xd0f0
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0134 1cbf mrr $IX1, $AC1.M
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0135 00df 1468 lr $AC1.M, @0x1468
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0137 00d1 11fc lr $AC1.H, @0x11fc
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0139 157c lsr $ACC1, #-4
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013a 1cdf mrr $IX2, $AC1.M
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013b 00d1 11b8 lr $AC1.H, @0x11b8
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013d 9900 asr16 $ACC1
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013e 1418 lsl $ACC0, #24
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013f 1478 lsr $ACC0, #-8
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0140 1f5e mrr $AX0.H, $AC0.M
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0141 1ffe mrr $AC1.M, $AC0.M
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0142 1f65 mrr $AX1.H, $IX1
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0143 3600 andr $AC0.M, $AX1.H
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0144 1402 lsl $ACC0, #2
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0145 1f66 mrr $AX1.H, $IX2
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0146 3700 andr $AC1.M, $AX1.H
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0147 1501 lsl $ACC1, #1
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0148 4c00 add $ACC0, $ACC1
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0149 1518 lsl $ACC1, #24
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014a 9900 asr16 $ACC1
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014b 3500 andr $AC1.M, $AX0.H
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014c 4c00 add $ACC0, $ACC1
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014d 00df 0012 lr $AC1.M, @0x0012
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014f 3f00 orc $AC1.M, $AC0.M
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0150 00ff 0012 sr @0x0012, $AC1.M
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0152 1470 lsr $ACC0, #-16
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0153 00df 0011 lr $AC1.M, @0x0011
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0155 3f00 orc $AC1.M, $AC0.M
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0156 00ff 0011 sr @0x0011, $AC1.M
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0158 1fa5 mrr $AC1.L, $IX1
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0159 1501 lsl $ACC1, #1
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015a 1fe6 mrr $AC1.M, $IX2
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015b f100 lsl16 $ACC1
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015c 15f8 asr $ACC1, #-8
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015d f500 lsr16 $ACC1
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015e 1f5f mrr $AX0.H, $AC1.M
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015f 1f7d mrr $AX1.H, $AC1.L
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0160 8100 clr $ACC0
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0161 00de 0011 lr $AC0.M, @0x0011
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0163 3400 andr $AC0.M, $AX0.H
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0164 8900 clr $ACC1
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0165 00df 0012 lr $AC1.M, @0x0012
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0167 3500 andr $AC1.M, $AX0.H
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0168 4c00 add $ACC0, $ACC1
|
|
0169 00df 0012 lr $AC1.M, @0x0012
|
|
016b 1578 lsr $ACC1, #-8
|
|
016c 4c00 add $ACC0, $ACC1
|
|
016d 8900 clr $ACC1
|
|
016e 1ffe mrr $AC1.M, $AC0.M
|
|
016f 1508 lsl $ACC1, #8
|
|
0170 3b00 orr $AC1.M, $AX1.H
|
|
0171 00de 0011 lr $AC0.M, @0x0011
|
|
0173 3e00 orc $AC0.M, $AC1.M
|
|
0174 00df 0012 lr $AC1.M, @0x0012
|
|
0176 3b00 orr $AC1.M, $AX1.H
|
|
0177 1cbf mrr $IX1, $AC1.M
|
|
0178 00da 15f1 lr $AX0.H, @0x15f1
|
|
017a 3500 andr $AC1.M, $AX0.H
|
|
017b 0295 0192 jz 0x0192
|
|
if () {
|
|
|
|
017d 00df 10e2 lr $AC1.M, @0x10e2
|
|
017f 1508 lsl $ACC1, #8
|
|
0180 1f5f mrr $AX0.H, $AC1.M
|
|
0181 00df 103b lr $AC1.M, @0x103b
|
|
0183 7900 decm $AC1.M
|
|
0184 3900 orr $AC1.M, $AX0.H
|
|
0185 3080 xorc $AC0.M, $AC1.M
|
|
0186 00fe 0022 sr @0x0022, $AC0.M
|
|
0188 00dc 1229 lr $AC0.L, @0x1229
|
|
018a 00dd 11f8 lr $AC1.L, @0x11f8
|
|
018c 5c00 sub $ACC0, $ACC1
|
|
018d f000 lsl16 $ACC0
|
|
018e 1fe5 mrr $AC1.M, $IX1
|
|
018f 3080 xorc $AC0.M, $AC1.M
|
|
0190 029f 01a5 jmp 0x01a5
|
|
|
|
} else {
|
|
|
|
0192 00df 10ca lr $AC1.M, @0x10ca
|
|
0194 1508 lsl $ACC1, #8
|
|
0195 1f5f mrr $AX0.H, $AC1.M
|
|
0196 00df 1043 lr $AC1.M, @0x1043
|
|
0198 7500 incm $AC1.M
|
|
0199 3900 orr $AC1.M, $AX0.H
|
|
019a 3080 xorc $AC0.M, $AC1.M
|
|
019b 00fe 0022 sr @0x0022, $AC0.M
|
|
019d 00dc 1259 lr $AC0.L, @0x1259
|
|
019f 00dd 16fe lr $AC1.L, @0x16fe
|
|
01a1 4c00 add $ACC0, $ACC1
|
|
01a2 f000 lsl16 $ACC0
|
|
01a3 1fe5 mrr $AC1.M, $IX1
|
|
01a4 3080 xorc $AC0.M, $AC1.M
|
|
}
|
|
|
|
01a5 00fe 0023 sr @0x0023, $AC0.M
|
|
// this is where result is written to main memory
|
|
// dsp mem 0x20-0x23 (8 bytes) are written back, because only values @22 and @23 were modified result is 32bit
|
|
01a7 00da 0008 lr $AX0.H, @0x0008 // cpu addr high
|
|
01a9 00d8 0009 lr $AX0.L, @0x0009 // cpu addr low
|
|
01ab 009b 0020 lri $AX1.H, #0x0020 // dsp addr
|
|
01ad 0099 0008 lri $AX1.L, #0x0008 // length
|
|
01af 0087 0000 lri $IX3, #0x0000 // there will be no iram dma
|
|
01b1 02bf 808b call 0x808b // dram->cpu <<<--- important!!
|
|
01b3 02df ret
|
|
}
|
|
|
|
01b4 0000 nop
|
|
01b5 0000 nop
|
|
01b6 0000 nop
|
|
01b7 0000 nop
|
|
01b8 0000 nop
|
|
01b9 0000 nop
|
|
01ba 0000 nop
|
|
01bb 0000 nop
|
|
01bc 0000 nop
|
|
01bd 0000 nop
|
|
01be 0000 nop
|
|
01bf 0000 nop
|