我们的电脑有32位系统和64位系统,当keil出现这个错误时,可以按以下办法解决，有两种解决办法:
第一种: 同时安装MDK Keil 和 C51 Keil 有可能解决此问题，安装必须路径相同。
第二种: 按下面的步骤进行操作，正常安装Keil有上面的错误肯定在TOOLS文件中没有[C51]项加入即可.如下面,其中PATH为你安装Keil的路径,请按你的实际路径改一下。
1.[C51-Tool]
[C51]
PATH="C:\Keil_v5\C51\"
VERSION=V9.51
BOOK0=HLP\Release_Notes.htm("Release Notes",GEN)
BOOK1=HLP\C51TOOLS.chm("Complete User's Guide Selection",C)
TDRV0=BIN\MON51.DLL ("Keil Monitor-51 Driver")
TDRV1=BIN\ISD51.DLL ("Keil ISD51 In-System Debugger")
TDRV2=BIN\MON390.DLL ("MON390: Dallas Contiguous Mode")
TDRV3=BIN\LPC2EMP.DLL ("LPC900 EPM Emulator/Programmer")
TDRV4=BIN\UL2UPSD.DLL ("ST-uPSD ULINK Driver")
TDRV5=BIN\UL2XC800.DLL ("Infineon XC800 ULINK Driver")
TDRV6=BIN\MONADI.DLL ("ADI Monitor Driver")
TDRV7=BIN\DAS2XC800.DLL ("Infineon DAS Client for XC800")
TDRV8=BIN\UL2LPC9.DLL ("NXP LPC95x ULINK Driver")
RTOS0=Dummy.DLL("Dummy")
RTOS1=RTXTINY.DLL ("RTX-51 Tiny")
RTOS2=RTX51.DLL ("RTX-51 Full")
把上面的信息复制到TOOLS文件并保存,便可以注册了。
注册成功后,打开一个工作进行编译,如果通过,安装成功,如果不通过,可能是安装目录下面没有C51编译程序,请从其它正确安装的机器上复制该文件夹,(C51)
2.[MDK] 与 [C51-Tool]已兼容Tool
[UV2]
ORGANIZATION="Microsoft"
NAME="Gates", "Bill"
EMAIL="BillGates@Microsoft"
ARMSEL=1
BOOK0=UV4\RELEASE_NOTES.HTM("uVision Release Notes",GEN)
[ARM]
PATH="D:\Keil\ARM\"
VERSION=4.12
PATH1="C:\Program Files\CodeSourcery\Sourcery G++ Lite\"
TOOLPREFIX=arm-none-eabi-
CPUDLL0=SARM.DLL(TDRV0,TDRV5,TDRV6,TDRV10) # Drivers for ARM7/9 devices
CPUDLL1=SARMCM3.DLL(TDRV1,TDRV2,TDRV3,TDRV4,TDRV5,TDRV7,TDRV8,TDRV9) # Drivers for Cortex-M devices
CPUDLL2=SARMCR4.DLL(TDRV7) # Drivers for Cortex-R4 devices
BOOK0=HLP\RELEASE_NOTES.HTM("Release Notes",GEN)
BOOK1=HLP\ARMTOOLS.chm("Complete User's Guide Selection",C)
BOOK2=HLP\RL_RELEASE_NOTES.HTM("RTL-ARM Release Notes",GEN)
BOOK3=HLP\RVI.chm("RV Compiler Introduction",GEN)
BOOK4=Signum\Docs\SigUV3Arm.htm("Signum Systems JTAGjet Driver Documentation",GEN)
TDRV0=BIN\UL2ARM.DLL("ULINK ARM Debugger")
TDRV1=BIN\UL2CM3.DLL("ULINK Cortex Debugger")
TDRV2=BIN\AGDIRDI.DLL("RDI Interface Driver")
TDRV3=BIN\ABLSTCM.dll("Altera Blaster Cortex Debugger")
TDRV4=BIN\lmidk-agdi.dll("Stellaris ICDI")
TDRV5=Signum\SigUV3Arm.dll("Signum Systems JTAGjet")
TDRV6=Segger\JLTAgdi.dll("J-LINK / J-TRACE")
TDRV7=Segger\JL2CM3.dll("Cortex-M/R J-LINK/J-Trace")
TDRV8=STLink\ST-LINKIII-KEIL.dll ("ST-Link Debugger")
TDRV9=BIN\ULP2CM3.DLL("ULINK Pro Cortex Debugger")
TDRV10=BIN\ULP2ARM.DLL("ULINK Pro ARM Debugger")
LIC0=03CSB-2XPD3-CJU6Z-JBKYI-VMY3C-LQ9JE
LIC1=WB401-CW016-MWZ2U-S3TQN-NQ06E-IZ0HT
[ARMADS]
PATH="D:\Keil\ARM\"
PATH1="BIN40\"
CPUDLL0=SARM.DLL(TDRV0,TDRV5,TDRV6,TDRV10) # Drivers for ARM7/9 devices
CPUDLL1=SARMCM3.DLL(TDRV1,TDRV2,TDRV3,TDRV4,TDRV5,TDRV7,TDRV8,TDRV9) # Drivers for Cortex-M devices
CPUDLL2=SARMCR4.DLL(TDRV7) # Drivers for Cortex-R4 devices
BOOK0=HLP\RELEASE_NOTES.HTM("Release Notes",GEN)
BOOK1=HLP\ARMTOOLS.chm("Complete User's Guide Selection",C)
BOOK2=HLP\RL_RELEASE_NOTES.HTM("RTL-ARM Release Notes",GEN)
BOOK3=HLP\RVI.chm("RV Compiler Introduction",GEN)
BOOK4=Signum\Docs\SigUV3Arm.htm("Signum Systems JTAGjet Driver Documentation",GEN)
TDRV0=BIN\UL2ARM.DLL("ULINK ARM Debugger")
TDRV1=BIN\UL2CM3.DLL("ULINK Cortex Debugger")
TDRV2=BIN\AGDIRDI.DLL("RDI Interface Driver")
TDRV3=BIN\ABLSTCM.dll("Altera Blaster Cortex Debugger")
TDRV4=BIN\lmidk-agdi.dll("Stellaris ICDI")
TDRV5=Signum\SigUV3Arm.dll("Signum Systems JTAGjet")
TDRV6=Segger\JLTAgdi.dll("J-LINK / J-TRACE")
TDRV7=Segger\JL2CM3.dll("Cortex-M/R J-LINK/J-Trace")
TDRV8=STLink\ST-LINKIII-KEIL.dll ("ST-Link Debugger")
TDRV9=BIN\ULP2CM3.DLL("ULINK Pro Cortex Debugger")
TDRV10=BIN\ULP2ARM.DLL("ULINK Pro ARM Debugger")
RTOS0=Dummy.DLL("Dummy")
RTOS1=VARTXARM.DLL ("RTX Kernel")
[C51]
PATH="C:\Keil\C51\"
VERSION=8.18
BOOK0=HLP\Release_Notes.htm("Release Notes",GEN)
BOOK1=HLP\C51TOOLS.chm("Complete User's Guide Selection",C)
TDRV0=BIN\MON51.DLL ("Keil Monitor-51 Driver")
TDRV1=BIN\ISD51.DLL ("Keil ISD51 In-System Debugger")
TDRV2=BIN\MON390.DLL ("MON390: Dallas Contiguous Mode")
TDRV3=BIN\LPC2EMP.DLL ("LPC900 EPM Emulator/Programmer")
TDRV4=BIN\UL2UPSD.DLL ("ST-uPSD ULINK Driver")
TDRV5=BIN\UL2XC800.DLL ("Infineon XC800 ULINK Driver")
TDRV6=BIN\MONADI.DLL ("ADI Monitor Driver")
TDRV7=BIN\DAS2XC800.DLL ("Infineon DAS Client for XC800")
TDRV8=BIN\UL2LPC9.DLL ("NXP LPC95x ULINK Driver")
RTOS0=Dummy.DLL("Dummy")
RTOS1=RTXTINY.DLL ("RTX-51 Tiny")
RTOS2=RTX51.DLL ("RTX-51 Full")
LIC0=47QGK-ZUGD5-A0GNB-2R394-36TJR-GBQXM
TDRV9=BIN\VDM51.DLL ("Proteus VSM Simulator")
BOOK2=HLP\VDMAGDI.HLP("Proteus VSM AGDI Driver",GEN)
[KARM]
TDRV0=BIN\VDMARM.DLL ("Proteus VSM Simulator")
BOOK0=HLP\VDMAGDI.HLP("Proteus VSM AGDI Driver",GEN)
可以复制此Tools内容粘贴到MDK安装目录下，然后修改路径即可。