关于MT6235的 地址线问题
35＋MCP(NAND+DSRAM),SDRAM是16位寻址；从35的A0开始拉出地址；
25＋MCP(NOR+utRAM),MCP也是16位寻址，但是从25的A1开始接出来；
请问35的指令系统是16位的吗?25的是8位的吗?才导致地址开始的地方不一致。
请达人指教，多谢！
顶一下啊！
怎么没人相应呀
或许开发SOC的时候认为A0在16bit系统中不可能产生外部单字节寻址而省略了这个PIN，而把A1标注为A0，这样接同样16bit MEMORY就不会带来疑惑了
如果我的假设是事实，那么我感觉这种标注会让系统设计者产生更大的疑惑（除非有ref design或者辅助文档说明）。
个人还是习惯传统标注，至于A0，通常系统悬空，可以作成复用PIN，可以把GPIO或者其他功能在里面，这样就不会浪费PIN脚了
不知道呀
不知道呀
不是吧。ARM有16位的thumb,32位的arm。没有8位的吧。
MTK软件编译用的是ARM指令还是thumb，请大家指教
摘自35 design notice：
EA0 of MT6235 is word address, no need to shift when connect 16 bit memory device.
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楼上的改行了 ！
12楼的，见一次，BS一次！
BS 12楼的！
对于16位FLASHCPU的A0不会影响FLASH读取地址，
就像5#兄弟说的可以用做复用。
有SDRAM controller的，该接哪接哪，没什么好讲的。
6235重启，dbg_print信息如下，那位高手解决一下
linkAddr[1]=3
linkAddr[2]=0
linkAddr[3]=0
Start loading ExtBootloader...
ReadPage dest=0x1cc0000, pNo=0x40, len=512, type=0
ReadPage dest=0x1cc0200, pNo=0x41, len=512, type=0
ReadPage dest=0x1cc0400, pNo=0x42, len=512, type=0
ReadPage dest=0x1cc0600, pNo=0x43, len=512, type=0
ReadPage dest=0x1cc0800, pNo=0x44, len=512, type=0
ReadPage dest=0x1cc0a00, pNo=0x45, len=512, type=0
ReadPage dest=0x1cc0c00, pNo=0x46, len=512, type=0
ReadPage dest=0x1cc0e00, pNo=0x47, len=512, type=0
ReadPage dest=0x1cc1000, pNo=0x48, len=512, type=0
ReadPage dest=0x1cc1200, pNo=0x49, len=512, type=0
ReadPage dest=0x1cc1400, pNo=0x4a, len=512, type=0
ReadPage dest=0x1cc1600, pNo=0x4b, len=512, type=0
ReadPage dest=0x1cc1800, pNo=0x4c, len=512, type=0
ReadPage dest=0x1cc1a00, pNo=0x4d, len=512, type=0
ReadPage dest=0x1cc1c00, pNo=0x4e, len=512, type=0
ReadPage dest=0x1cc1e00, pNo=0x4f, len=512, type=0
ReadPage dest=0x1cc2000, pNo=0x50, len=512, type=0
ReadPage dest=0x1cc2200, pNo=0x51, len=512, type=0
ReadPage dest=0x1cc2400, pNo=0x52, len=512, type=0
ReadPage dest=0x1cc2600, pNo=0x53, len=512, type=0
ReadPage dest=0x1cc2800, pNo=0x54, len=512, type=0
ReadPage dest=0x1cc2a00, pNo=0x55, len=512, type=0
ReadPage dest=0x1cc2c00, pNo=0x56, len=512, type=0
ReadPage dest=0x1cc2e00, pNo=0x57, len=512, type=0
ReadPage dest=0x1cc3000, pNo=0x58, len=512, type=0
ReadPage dest=0x1cc3200, pNo=0x59, len=512, type=0
ReadPage dest=0x1cc3400, pNo=0x5a, len=512, type=0
ReadPage dest=0x1cc3600, pNo=0x5b, len=512, type=0
ReadPage dest=0x1cc3800, pNo=0x5c, len=512, type=0
ReadPage dest=0x1cc3a00, pNo=0x5d, len=512, type=0
ReadPage dest=0x1cc3c00, pNo=0x5e, len=512, type=0
ReadPage dest=0x1cc3e00, pNo=0x5f, len=512, type=0
ReadPage dest=0x1cc4000, pNo=0x60, len=512, type=0
ReadPage dest=0x1cc4200, pNo=0x61, len=512, type=0
ReadPage dest=0x1cc4400, pNo=0x62, len=512, type=0
ReadPage dest=0x1cc4600, pNo=0x63, len=512, type=0
ReadPage dest=0x1cc4800, pNo=0x64, len=512, type=0
ReadPage dest=0x1cc4a00, pNo=0x65, len=512, type=0
ReadPage dest=0x1cc4c00, pNo=0x66, len=512, type=0
ReadPage dest=0x1cc4e00, pNo=0x67, len=512, type=0
ReadPage dest=0x1cc5000, pNo=0x68, len=512, type=0
ReadPage dest=0x1cc5200, pNo=0x69, len=512, type=0
ReadPage dest=0x1cc5400, pNo=0x6a, len=260, type=0
ExtBootloader loading is done, last linkAddr=1, len=0
Verifying ExtBootloader...
~~~ Welcome to MTK Bootloader V005 (since 2005) ~~~
**===================================================**
Find and load image list block...
Procressing block 0x4
ReadPage dest=0x40001000, pNo=0x80, len=512, type=-1
ReadPage dest=0x40001000, pNo=0x9f, len=512, type=-1
Procressing block 0x5
ReadPage dest=0x40001000, pNo=0xa0, len=512, type=-1
Unrecognized block, skip it
Main=0x4, Tmp=0x0, Fota=0x0, Bak=0x0
ReadPage dest=0x40001000, pNo=0x82, len=512, type=-1
Number of image segments = 4
..[0] Image size = 352Bytes, start addr. =0x428
..[1] Image size = 2377816Bytes, start addr. =0x0
..[2] Image size = 8659212Bytes, start addr. =0x248858
..[3] Image size = 7743676Bytes, start addr. =-0xe000000
ReadPage dest=0x40001000, pNo=0x83, len=512, type=-1
GetFeatureCombination()
g_mauiFeatureCombination=0x8, bl combination=1342219160
FactoryProcedure BL_FC=0x8 MAUI_FC=0x8
Start loading image...
..................................................................................................................................................................................................................................................................................................NFB image index: 1...
Bye bye bootloader, jump to=0x0
Bootloader total duration = 0 ms
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
cold reset
L1usim_Reset
噜
e dest=0x1cc0e00, pNo=0x47, len=512, type=0
ReadPage dest=0x1cc1000, pNo=0x48, len=512, type=0
ReadPage dest=0x1cc1200, pNo=0x49, len=512, type=0
ReadPage dest=0x1cc1400, pNo=0x4a, len=512, type=0
ReadPage dest=0x1cc1600, pNo=0x4b, len=512, type=0
ReadPage dest=0x1cc1800, pNo=0x4c, len=512, type=0
ReadPage dest=0x1cc1a00, pNo=0x4d, len=512, type=0
ReadPage dest=0x1cc1c00, pNo=0x4e, len=512, type=0
ReadPage dest=0x1cc1e00, pNo=0x4f, len=512, type=0
ReadPage dest=0x1cc2000, pNo=0x50, len=512, type=0
ReadPage dest=0x1cc2200, pNo=0x51, len=512, type=0
ReadPage dest=0x1cc2400, pNo=0x52, len=512, type=0
ReadPage dest=0x1cc2600, pNo=0x53, len=512, type=0
ReadPage dest=0x1cc2800, pNo=0x54, len=512, type=0
ReadPage dest=0x1cc2a00, pNo=0x55, len=512, type=0
ReadPage dest=0x1cc2c00, pNo=0x56, len=512, type=0
ReadPage dest=0x1cc2e00, pNo=0x57, len=512, type=0
ReadPage dest=0x1cc3000, pNo=0x58, len=512, type=0
ReadPage dest=0x1cc3200, pNo=0x59, len=512, type=0
ReadPage dest=0x1cc3400, pNo=0x5a, len=512, type=0
ReadPage dest=0x1cc3600, pNo=0x5b, len=512, type=0
ReadPage dest=0x1cc3800, pNo=0x5c, len=512, type=0
ReadPage dest=0x1cc3a00, pNo=0x5d, len=512, type=0
ReadPage dest=0x1cc3c00, pNo=0x5e, len=512, type=0
ReadPage dest=0x1cc3e00, pNo=0x5f, len=512, type=0
ReadPage dest=0x1cc4000, pNo=0x60, len=512, type=0
ReadPage dest=0x1cc4200, pNo=0x61, len=512, type=0
ReadPage dest=0x1cc4400, pNo=0x62, len=512, type=0
ReadPage dest=0x1cc4600, pNo=0x63, len=512, type=0
ReadPage dest=0x1cc4800, pNo=0x64, len=512, type=0
ReadPage dest=0x1cc4a00, pNo=0x65, len=512, type=0
ReadPage dest=0x1cc4c00, pNo=0x66, len=512, type=0
ReadPage dest=0x1cc4e00, pNo=0x67, len=512, type=0
ReadPage dest=0x1cc5000, pNo=0x68, len=512, type=0
ReadPage dest=0x1cc5200, pNo=0x69, len=512, type=0
ReadPage dest=0x1cc5400, pNo=0x6a, len=260, type=0
ExtBootloader loading is done, last linkAddr=1, len=0
Verifying ExtBootloader...
~~~ Welcome to MTK Bootloader V005 (since 2005) ~~~
**=========================================
==========**
Find and load image list block...
Procressing block 0x4
ReadPage dest=0x40001000, pNo=0x80, len=512, type=-1
ReadPage dest=0x40001000, pNo=0x9f, len=512, type=-1
Procressing block 0x5
ReadPage dest=0x40001000, pNo=0xa0, len=512, type=-1
Unrecognized block, skip it
Main=0x4, Tmp=0x0, Fota=0x0, Bak=0x0
ReadPage dest=0x40001000, pNo=0x82, len=512, type=-1
Number of image segments = 4
..[0] Image size = 352Bytes, start addr. =0x428
..[1] Image size = 2377816Bytes, start addr. =0x0
..[2] Image size = 8659212Bytes, start addr. =0x248858
..[3] Image size = 7743676Bytes, start addr. =-0xe000000
ReadPage dest=0x40001000, pNo=0x83, len=512, type=-1
GetFeatureCombination()
g_mauiFeatureCombination=0x8, bl combination=1342219160
FactoryProcedure BL_FC=0x8 MAUI_FC=0x8
Start loading image...
...........................................................................................
.................................................................................................................................
......................................................................NFB image index: 1...
Bye bye bootloader, jump to=0x0
Bootloader total duration = 0 ms
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
cold reset
L1usim_Reset
噜
c1c00, pNo=0x4e, len=512, type=0
ReadPage dest=0x1cc1e00, pNo=0x4f, len=512, type=0
ReadPage dest=0x1cc2000, pNo=0x50, len=512, type=0
ReadPage dest=0x1cc2200, pNo=0x51, len=512, type=0
ReadPage dest=0x1cc2400, pNo=0x52, len=512, type=0
ReadPage dest=0x1cc2600, pNo=0x53, len=512, type=0
ReadPage dest=0x1cc2800, pNo=0x54, len=512, type=0
ReadPage dest=0x1cc2a00, pNo=0x55, len=512, type=0
ReadPage dest=0x1cc2c00, pNo=0x56, len=512, type=0
ReadPage dest=0x1cc2e00, pNo=0x57, len=512, type=0
ReadPage dest=0x1cc3000, pNo=0x58, len=512, type=0
ReadPage dest=0x1cc3200, pNo=0x59, len=512, type=0
ReadPage dest=0x1cc3400, pNo=0x5a, len=512, type=0
ReadPage dest=0x1cc3600, pNo=0x5b, len=512, type=0
ReadPage dest=0x1cc3800, pNo=0x5c, len=512, type=0
ReadPage dest=0x1cc3a00, pNo=0x5d, len=512, type=0
ReadPage dest=0x1cc3c00, pNo=0x5e, len=512, type=0
ReadPage dest=0x1cc3e00, pNo=0x5f, len=512, type=0
ReadPage dest=0x1cc4000, pNo=0x60, len=512, type=0
ReadPage dest=0x1cc4200, pNo=0x61, len=512, type=0
ReadPage dest=0x1cc4400, pNo=0x62, len=512, type=0
ReadPage dest=0x1cc4600, pNo=0x63, len=512, type=0
ReadPage dest=0x1cc4800, pNo=0x64, len=512, type=0
ReadPage dest=0x1cc4a00, pNo=0x65, len=512, type=0
ReadPage dest=0x1cc4c00, pNo=0x66, len=512, type=0
ReadPage dest=0x1cc4e00, pNo=0x67, len=512, type=0
ReadPage dest=0x1cc5000, pNo=0x68, len=512, type=0
ReadPage dest=0x1cc5200, pNo=0x69, len=512, type=0
ReadPage dest=0x1cc5400, pNo=0x6a, len=260, type=0
ExtBootloader loading is done, last linkAddr=1, len=0
Verifying ExtBootloader...
~~~ Welcome to MTK Bootloader V005 (since 2005) ~~~
**===================================================**
Find and load image list block...
Procressing block 0x4
ReadPage dest=0x40001000, pNo=0x80, len=512, type=-1
ReadPage dest=0x40001000, pNo=0x9f, len=512, type=-1
Procressing block 0x5
ReadPage dest=0x40001000, pNo=0xa0, len=512, type=-1
Unrecognized block, skip it
Main=0x4, Tmp=0x0, Fota=0x0, Bak=0x0
ReadPage dest=0x40001000, pNo=0x82, len=512, type=
-1
Number of image segments = 4
..[0] Image size = 352Bytes, start addr. =0x428
..[1] Image size = 2377816Bytes, start addr. =0x0
..[2] Image size = 8659212Bytes, start addr. =0x248858
..[3] Image size = 7743676Bytes, start addr. =-0xe000000
ReadPage dest=0x40001000, pNo=0x83, len=512, type=-1
GetFeatureCombination()
g_mauiFeatureCombination=0x8, bl combination=1342219160
FactoryProcedure BL_FC=0x8 MAUI_FC=0x8
Start loading image...
................................................................................................................
...........................................................................................................................
.......................................................NFB image index: 1...
Bye bye bootloader, jump to=0x0
Bootloader total duration = 0 ms
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
S
D_Cmd8 fail
cold reset
L1usim_Reset
噜
12, type=0
ReadPage dest=0x1cc2e00, pNo=0x57, len=512, type=0
ReadPage dest=0x1cc3000, pNo=0x58, len=512, type=0
ReadPage dest=0x1cc3200, pNo=0x59, len=512, type=0
ReadPage dest=0x1cc3400, pNo=0x5a, len=512, type=0
ReadPage dest=0x1cc3600, pNo=0x5b, len=512, type=0
ReadPage dest=0x1cc3800, pNo=0x5c, len=512, type=0
ReadPage dest=0x1cc3a00, pNo=0x5d, len=512, type=0
ReadPage dest=0x1cc3c00, pNo=0x5e, len=512, type=0
ReadPage dest=0x1cc3e00, pNo=0x5f, len=512, type=0
ReadPage dest=0x1cc4000, pNo=0x60, len=512, type=0
ReadPage dest=0x1cc4200, pNo=0x61, len=512, type=0
ReadPage dest=0x1cc4400, pNo=0x62, len=512, type=0
ReadPage dest=0x1cc4600, pNo=0x63, len=512, type=0
ReadPage dest=0x1cc4800, pNo=0x64, len=512, type=0
ReadPage dest=0x1cc4a00, pNo=0x65, len=512, type=0
ReadPage dest=0x1cc4c00, pNo=0x66, len=512, type=0
ReadPage dest=0x1cc4e00, pNo=0x67, len=512, type=0
ReadPage dest=0x1cc5000, pNo=0x68, len=512, type=0
ReadPage dest=0x1cc5200, pNo=0x69, len=512, type=0
ReadPage dest=0x1cc5400, pNo=0x6a, len=260, type=0
ExtBootloader loading is done, last linkAddr=1, len=0
Verifying ExtBootloader...
~~~ Welcome to MTK Bootloader V005 (since 2005) ~~~
**===================================================**
Find and load image list block...
Procressing block 0x4
ReadPage dest=0x40001000, pNo=0x80, len=512, type=-1
ReadPage dest=0x40001000, pNo=0x9f, len=512, type=-1
Procressing block 0x5
ReadPage dest=0x40001000, pNo=0xa0, len=512, type=-1
Unrecognized block, skip it
Main=0x4, Tmp=0x0, Fota=0x0, Bak=0x0
ReadPage dest=0x40001000, pNo=0x82, len=512, type=-1
Number of image segments = 4
..[0] Image size = 352Bytes, start addr. =0x428
..[1] Image size = 2377816Bytes, start addr. =0x0
..[2] Image size = 8659212Bytes, start addr. =0x248858
..[3] Image size = 7743676Bytes, start addr. =-0xe000000
ReadPage dest=0x40001000, pNo=0x83, len=512, type=-1
GetFeatureCombination()
g_mauiFeatureCombination=0x8, bl combination=1342219160
FactoryProcedure BL_FC=0x8 MAUI_FC=0x8
Start loading
image...
..................................................................................................................................
..................................................................................................................................
..............................NFB image index: 1...
Bye bye bootloader, jump to=0x0
Bootloader total duration = 0 ms
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
cold reset
L1usim_Reset
噜
pe=0
ReadPage dest=0x1cc3e00, pNo=0x5f, len=512, type=0
ReadPage dest=0x1cc4000, pNo=0x60, len=512, type=0
ReadPage dest=0x1cc4200, pNo=0x61, len=512, type=0
ReadPage dest=0x1cc4400, pNo=0x62, len=512, type=0
ReadPage dest=0x1cc4600, pNo=0x63, len=512, type=0
ReadPage dest=0x1cc4800, pNo=0x64, len=512, type=0
ReadPage dest=0x1cc4a00, pNo=0x65, len=512, type=0
ReadPage dest=0x1cc4c00, pNo=0x66, len=512, type=0
ReadPage dest=0x1cc4e00, pNo=0x67, len=512, type=0
ReadPage dest=0x1cc5000, pNo=0x68, len=512, type=0
ReadPage dest=0x1cc5200, pNo=0x69, len=512, type=0
ReadPage dest=0x1cc5400, pNo=0x6a, len=260, type=0
ExtBootloader loading is done, last linkAddr=1, len=0
Verifying ExtBootloader...
~~~ Welcome to MTK Bootloader V005 (since 2005) ~~~
**===================================================**
Find and load image list block...
Procressing block 0x4
ReadPage dest=0x40001000, pNo=0x80, len=512, type=-1
ReadPage dest=0x40001000, pNo=0x9f, len=512, type=-1
Procressing block 0x5
ReadPage dest=0x40001000, pNo=0xa0, len=512, type=-1
Unrecognized block, skip it
Main=0x4, Tmp=0x0, Fota=0x0, Bak=0x0
ReadPage dest=0x40001000, pNo=0x82, len=512, type=-1
Number of image segments = 4
..[0] Image size = 352Bytes, start addr. =0x428
..[1] Image size = 2377816Bytes, start addr. =0x0
..[2] Image size = 8659212Bytes, start addr. =0x248858
..[3] Image size = 7743676Bytes, start addr. =-0xe000000
ReadPage dest=0x40001000, pNo=0x83, len=512, type=-1
GetFeatureCombination()
g_mauiFeatureCombination=0x8, bl combination=1342219160
FactoryProcedure BL_FC=0x8 MAUI_FC=0x8
Start loading image...
..............................
..................................................................................................................................
........................................................................................................................
..........NFB image index: 1...
Bye bye bootloader, jump to=0x0
Bootloader total duration = 0 ms
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
SD_Cmd8 fail
cold reset
L1usim_Reset
噜
okokok