📄 44binit_s引导程序注释.mht
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<table><tr><td>
<![endif]-->=20
<UL>
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<LI><A title=3D=CF=EE=C4=BF=CE=AF=CD=D0=C1=F7=B3=CC =
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=F7=B3=CC</A>=20
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<LI><A title=3D=BF=AA=B7=A2=B0=E5=BC=BC=CA=F5=D6=A7=B3=D6=20
=
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=CA=F5=D6=A7=B3=D6</A> </LI>
<LI><A title=3D=CF=EE=C4=BF=CE=AF=CD=D0=D0=AD=D2=E9 =
href=3D"http://www.hzlitai.com.cn/xmwtxy.html">=CF=EE=C4=BF=CE=AF=CD=D0=D0=
=AD=D2=E9</A>=20
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<LI><A title=3D=BC=BC=CA=F5=BF=AA=B7=A2=BA=CF=CD=AC =
href=3D"http://www.hzlitai.com.cn/jskfht.html">=BC=BC=CA=F5=BF=AA=B7=A2=BA=
=CF=CD=AC</A>=20
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<LI><A class=3Dhide =
href=3D"http://www.hzlitai.com.cn/bbs">ARM=C2=DB=CC=B3</A><!--[if lte IE =
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href=3D"http://www.hzlitai.com.cn/zhaopin.html">=B3=CF=C6=B8=D3=A2=B2=C5<=
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<![endif]--> </LI></UL></DIV></DIV></DIV><!--################coolpic =
Start#############################-->
<DIV id=3Dcenter>
<DIV style=3D"MARGIN: 0px auto; WIDTH: 800px; BACKGROUND-COLOR: =
#ffffff">
<SCRIPT =
src=3D"http://www.hzlitai.com.cn/ad/plugin/1/index.asp?w=3D798&h=3D15=
0"=20
type=3Dtext/javascript></SCRIPT>
</DIV></DIV><!--################coolPic =
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<DIV id=3Dcenter>
<DIV id=3Dnavbar=20
style=3D"PADDING-LEFT: 10px; MARGIN-LEFT: auto; WIDTH: 790px; =
MARGIN-RIGHT: auto; PADDING-TOP: 8px; HEIGHT: 18px; BACKGROUND-COLOR: =
#ffffff; TEXT-ALIGN: left">=C4=FA=CF=D6=D4=DA=B5=C4=CE=BB=D6=C3=20
=A3=BA <A href=3D"http://www.hzlitai.com.cn/index.html"><SPAN=20
class=3Dstyle1>=CA=D7=D2=B3</SPAN></A>>><A=20
href=3D"http://www.hzlitai.com.cn/article.html"><SPAN=20
class=3Dstyle1>=CE=C4=D5=C2=C6=B5=B5=C0</SPAN></A>>> <A=20
href=3D"http://www.hzlitai.com.cn/article/ARM7-artilcle/ARM7-artilcle.htm=
l">ARM7=BF=AA=B7=A2=C6=BD=CC=A8=CF=E0=B9=D8</A>>><A=20
href=3D"http://www.hzlitai.com.cn/article/ARM7-artilcle/cphelp_1.html"><B=
=20
class=3Dstyle1>=B2=FA=C6=B7FAQ</B></A>>> <SPAN =
class=3Dstyle2><FONT=20
color=3D#ff0000>44BINIT.S=D2=FD=B5=BC=B3=CC=D0=F2=D7=A2=CA=CD</FONT>=A1=BE=
=D5=FD=CE=C4=A1=BF</SPAN> </DIV></DIV>
<TABLE class=3Dborder style=3D"BORDER-TOP: #000000 1px solid" =
cellSpacing=3D0=20
cellPadding=3D0 width=3D800 align=3Dcenter bgColor=3D#ffffff border=3D0>
<TBODY>
<TR>
<TD align=3Dmiddle height=3D10>
<TABLE class=3DpageSeparator cellSpacing=3D6 cellPadding=3D0 =
width=3D800=20
border=3D0><TBODY>
<TR>
<TD align=3Dmiddle height=3D16><FONT=20
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<TABLE class=3Dborder=20
style=3D"PADDING-RIGHT: 20px; PADDING-LEFT: 20px; PADDING-BOTTOM: 20px; =
PADDING-TOP: 20px"=20
cellSpacing=3D6 cellPadding=3D0 width=3D800 align=3Dcenter =
bgColor=3D#ffffff border=3D0>
<TBODY>
<TR>
<TD align=3Dmiddle><FONT=20
style=3D"FONT-WEIGHT: bold; FONT-SIZE: 16px; COLOR: =
#666666">44BINIT.S=D2=FD=B5=BC=B3=CC=D0=F2=D7=A2=CA=CD</FONT>=20
</TD></TR>
<TR align=3Dmiddle>
<TD class=3Dlistcontent id=3Dfontzoom vAlign=3Dtop align=3Dleft=20
height=3D293> =20
<P><FONT=20
=
color=3D#333333>;******************************************************* =
<BR>; * NAME : 44BINIT.S * <BR>; * Version : 10.JAn.2003 * <BR>; * =
Description: * <BR>; * C start up codes * <BR>; * Configure =
memory,=20
Initialize ISR ,stacks * <BR>; * Initialize C-variables * <BR>; * =
Fill=20
zeros into zero-initialized C-variables * <BR>;=20
******************************************************* =
<BR><BR>GET=20
option.s ;=CF=E0=B5=B1=D3=DAc=D3=EF=D1=D4=D6=D0=B5=C4#include =
"option.s" <BR>GET memcfg.s <BR><BR>;Interrupt=20
Control =
<BR>;=C9=F9=C3=F7=D2=BB=D0=A9=B7=FB=BA=C5=B3=A3=C1=BF=A3=AC=D5=E2=D0=A9=B7=
=FB=BA=C5=B3=A3=C1=BF=BA=CD=B5=D8=D6=B7=CF=E0=D3=A6=BC=C4=B4=E6=C6=F7=B5=C4=
=B5=D8=D6=B7=B6=D4=D3=A6 <BR>INTPND EQU 0x01e00004=20
=
;=D6=B8=CA=BE=D6=D0=B6=CF=C7=EB=C7=F3=D7=B4=CC=AC=BC=C4=B4=E6=C6=F7 =
=C3=BF=D2=BB=CE=BB=B4=FA=B1=E4=D2=BB=D6=D6=D6=D0=B6=CF=C7=EB=C7=F3=BE=DF=CC=
=E5=B1=ED=CA=BE=C4=C4=D2=BB=D6=D6=D6=D0=B6=CF=C7=EB=B2=CE=BF=BC44b0 spec =
<BR>INTMOD EQU 0x01e00008=20
;=D6=D0=B6=CF=C4=A3=CA=BD=BC=C4=B4=E6=C6=F7 =
=D3=D0=C1=BD=D6=D6=D6=D0=B6=CF=C4=A3=CA=BD=B6=D4=D3=A6=CE=BB=CE=AA1=B4=FA=
=B1=EDfip mode 0=B4=FA=B1=EDriq mode <BR>INTMSK EQU 0x01e0000c=20
;=C8=B7=B6=A8=C4=C4=B8=F6=D6=D0=B6=CF=D4=B4=B1=BB=C6=C1=B1=CE =
=C6=C1=B1=CE=B5=C4=D6=D0=B6=CF=D4=B4=BD=AB=B2=BB=B1=BB=B7=FE=CE=F1 =
<BR>I_ISPR EQU 0x01e00020 =
;=D6=D0=B6=CF=B7=FE=CE=F1=B9=D2=C6=F0=BC=C4=B4=E6=C6=F7 <BR>I_CMST=20
EQU 0x01e0001c =
;=B5=B1=C7=B0=D6=F7=BC=C4=B4=E6=C6=F7irq=D3=C5=CF=C8=BC=B6 =
<BR><BR>;Watchdog timer <BR>WTCON EQU=20
0x01d30000 =
;=BF=B4=C3=C5=B9=B7=B6=A8=CA=B1=C6=F7=BF=D8=D6=C6=BC=C4=B4=E6=C6=F7 =
<BR><BR>;Clock Controller <BR>PLLCON EQU=20
0x01d80000 ;pll=BF=D8=D6=C6=BC=C4=B4=E6=C6=F7 <BR>CLKCON EQU =
0x01d80004 ;=CA=B1=D6=D3=BF=D8=D6=C6=BC=C4=B4=E6=C6=F7 <BR>LOCKTIME EQU=20
0x01d8000c =
;=CB=F8=B6=A8=CA=B1=BC=E4=BC=C6=CA=FD=D6=B5=BC=C4=B4=E6=C6=F7 =
<BR><BR>;Memory Controller <BR>REFRESH EQU=20
0x01c80024 ;Dram/sdram=CB=A2=D0=C2=BF=D8=D6=C6=BC=C4=B4=E6=C6=F7=20
=
<BR>;=CF=C2=C3=E6=CA=C7=B6=D4arm=B4=A6=C0=ED=C6=F7=C4=A3=CA=BD=BC=C4=B4=E6=
=C6=F7=B6=D4=D3=A6=D6=B5=B5=C4=B3=A3=CA=FD=B6=A8=D2=E5=A3=ACarm=B4=A6=C0=ED=
=C6=F7=D6=D0=D3=D0=D2=BB=B8=F6CPSR=B3=CC=D0=F2=D7=B4=CC=AC=BC=C4=B4=E6=C6=
=F7 =
=CB=FC=B5=C4=BA=F3=CE=E5=CE=BB=BE=F6=B6=A8=C4=BF=C7=B0=B5=C4=B4=A6=C0=ED=C6=
=F7=C4=A3=CA=BD=20
<BR>;Pre-defined constants <BR>USERMODE EQU 0x10 =
;0b10000=D3=C3=BB=A7=C4=A3=CA=BD <BR>FIQMODE=20
EQU 0x11 ;0b10001FIQ=C4=A3=CA=BD <BR>IRQMODE EQU 0x12 =
;0b10010IRQ=C4=A3=CA=BD <BR>SVCMODE EQU=20
0x13 ;0b10011=B9=DC=C0=ED=C4=A3=CA=BD <BR>ABORTMODE EQU 0x17 =
;0b10111=D6=D0=D6=B9=C4=A3=CA=BD <BR>UNDEFMODE EQU=20
0x1b ;0b11011=CE=B4=B6=A8=D2=E5 <BR>MODEMASK EQU 0x1f =
;0b11111=CF=B5=CD=B3=C4=A3=CA=BD <BR>NOINT EQU 0xc0 ;=20
<BR><BR>;check if tasm.exe is used. =
<BR>;arm=B4=A6=C0=ED=C6=F7=D3=D0=C1=BD=D6=D6=B9=A4=D7=F7=D7=B4=CC=AC =
1.arm:32=CE=BB=20
=
=D5=E2=D6=D6=B9=A4=D7=F7=D7=B4=CC=AC=CF=C2=D6=B4=D0=D0=D7=D6=B6=D4=D7=BC=B5=
=C4arm=D6=B8=C1=EE 2.Thumb:16=CE=BB =
=D5=E2=D6=D6=B9=A4=D7=F7=D7=B4=CC=AC=D6=B4=D0=D0=B0=EB=D7=D6=B6=D4=D7=BC=B5=
=C4Thumb=D6=B8=C1=EE =
<BR>;=D2=F2=CE=AA=B4=A6=C0=ED=C6=F7=B7=D6=CE=AA16=CE=BB=20
32=CE=BB=C1=BD=D6=D6=B9=A4=D7=F7=D7=B4=CC=AC =
=B3=CC=D0=F2=B5=C4=B1=E0=D2=EB=C6=F7=D2=B2=CA=C7=B7=D616=CE=BB=BA=CD32=C1=
=BD=D6=D6=B1=E0=D2=EB=B7=BD=CA=BD =
=CB=F9=D2=D4=CF=C2=C3=E6=B5=C4=B3=CC=D0=F2=D3=C3=D3=DA=B8=F9=BE=DD=B4=A6=C0=
=ED=C6=F7=B9=A4=D7=F7=D7=B4=CC=AC=C8=B7=B6=A8=B1=E0=D2=EB=C6=F7=B1=E0=D2=EB=
=B7=BD=CA=BD=20
=
<BR>;code16=CE=B1=D6=B8=C1=EE=D6=B8=CA=BE=BB=E3=B1=E0=B1=E0=D2=EB=C6=F7=BA=
=F3=C3=E6=B5=C4=D6=B8=C1=EE=CE=AA16=CE=BB=B5=C4thumb=D6=B8=C1=EE=20
=
<BR>;code32=CE=B1=D6=B8=C1=EE=D6=B8=CA=BE=BB=E3=B1=E0=B1=E0=D2=EB=C6=F7=BA=
=F3=C3=E6=B5=C4=D6=B8=C1=EE=CE=AA32=CE=BB=B5=C4arm=D6=B8=C1=EE=20
=
<BR>;=D5=E2=B6=CE=CA=C7=CE=AA=C1=CB=CD=B3=D2=BB=C4=BF=C7=B0=B5=C4=B4=A6=C0=
=ED=C6=F7=B9=A4=D7=F7=D7=B4=CC=AC=BA=CD=C8=ED=BC=FE=B1=E0=D2=EB=B7=BD=CA=BD=
=A3=A816=CE=BB=B1=E0=D2=EB=BB=B7=BE=B3=CA=B9=D3=C3tasm.exe=B1=E0=D2=EB=A3=
=A9 <BR>GBLL THUMBCODE=20
;=C9=E8=D6=C3=D2=BB=B8=F6=C8=AB=BE=D6=C2=DF=BC=AD=B1=E4=C1=BF =
<BR>[ {CONFIG} =3D 16 ;if config=3D=3D16 =
=D5=E2=C0=EF=B1=ED=CA=BE=C4=E3=B5=C4=C4=BF=C7=B0=B4=A6=D3=DA=C1=EC=CF=C8=B5=
=D816=CE=BB=B1=E0=D2=EB=B7=BD=CA=BD=20
<BR>THUMBCODE SETL {TRUE} ;=C9=E8=D6=C3THUMBCODE =CE=AA true =
<BR>CODE32 ;=D7=AA=C8=EB32=CE=BB=B1=E0=D2=EB=C4=A3=CA=BD <BR>|=20
=B4=CE ;else <BR>THUMBCODE SETL {FALSE} ;=C9=E8=D6=C3THUMBCODE =
=CE=AA false <BR>] <BR><BR>[=20
THUMBCODE ;if THUMBCODE=3D=3DTRUE <BR>CODE32 ;for start-up code =
for Thumb=20
mode;=D7=AA=C8=EB32=CE=BB=B1=E0=D2=EB=B7=BD=CA=BD <BR>] =
<BR>;=D7=A2=D2=E2=CF=C2=C3=E6=D5=E2=B6=CE=B3=CC=D0=F2=CA=C7=B8=F6=BA=EA=B6=
=A8=D2=E5 =
=BA=DC=B6=E0=C8=CB=B6=D4=D5=E2=B6=CE=B3=CC=D0=F2=B2=BB=C0=ED=BD=E2 =
=CE=D2=D4=D9=B4=CE=C7=BF=B5=F7=D5=E2=CA=C7=D2=BB=B8=F6=BA=EA=B6=A8=D2=E5 =
=
=CB=F9=D2=D4=B4=F3=BC=D2=D2=AA=D7=A2=D2=E2=C1=CB=CF=C2=C3=E6=B0=FC=BA=AC=B5=
=C4HandlerXXX HANDLER =
HandleXXX=BD=AB=B6=BC=B1=BB=CF=C2=C3=E6=D5=E2=B6=CE=B3=CC=D0=F2=D5=B9=BF=AA=
=20
=
<BR>;=D5=E2=B6=CE=B3=CC=D0=F2=D3=C3=D3=DA=B0=D1=D6=D0=B6=CF=B7=FE=CE=F1=B3=
=CC=D0=F2=B5=C4=CA=D7=B5=D8=D6=B7=D7=B0=D4=D8=B5=BDpc=D6=D0=A3=AC=D3=D0=C8=
=CB=B3=C6=D6=AE=CE=AA=A1=B0=BC=D3=D4=D8=B3=CC=D0=F2=A1=B1=A1=A3=20
=
<BR>;=B1=BE=B3=F5=CA=BC=BB=AF=B3=CC=D0=F2=B6=A8=D2=E5=C1=CB=D2=BB=B8=F6=CA=
=FD=BE=DD=C7=F8=A3=A8=D4=DA=CE=C4=BC=FE=D7=EE=BA=F3=A3=A9=A3=AC34=B8=F6=D7=
=D6=BF=D5=BC=E4=A3=AC=B4=E6=B7=C5=CF=E0=D3=A6=D6=D0=B6=CF=B7=FE=CE=F1=B3=CC=
=D0=F2=B5=C4=CA=D7=B5=D8=D6=B7=A1=A3=C3=BF=B8=F6=D7=D6=BF=D5=BC=E4=B6=BC=D3=
=D0=D2=BB=B8=F6=B1=EA=BA=C5=A3=AC=D2=D4Handle***=C3=FC=C3=FB=A1=A3=20
=
<BR>;=D4=DA=CF=F2=C1=BF=D6=D0=B6=CF=C4=A3=CA=BD=CF=C2=CA=B9=D3=C3=A1=B0=BC=
=D3=D4=D8=B3=CC=D0=F2=A1=B1=C0=B4=D6=B4=D0=D0=D6=D0=B6=CF=B7=FE=CE=F1=B3=CC=
=D0=F2=A1=A3 =
<BR>;=D5=E2=C0=EF=BE=CD=B1=D8=D0=EB=BD=B2=D2=BB=CF=C2=CF=F2=C1=BF=D6=D0=B6=
=CF=C4=A3=CA=BD=BA=CD=B7=C7=CF=F2=C1=BF=D6=D0=B6=CF=C4=A3=CA=BD=B5=C4=B8=C5=
=C4=EE=20
=
<BR>;=CF=F2=C1=BF=D6=D0=B6=CF=C4=A3=CA=BD=CA=C7=B5=B1cpu=B6=C1=C8=A1=CE=BB=
=D3=DA0x18=B4=A6=B5=C4IRQ=D6=D0=B6=CF=D6=B8=C1=EE=B5=C4=CA=B1=BA=F2=A3=AC=
=CF=B5=CD=B3=D7=D4=B6=AF=B6=C1=C8=A1=B6=D4=D3=A6=D3=DA=B8=C3=D6=D0=B6=CF=D4=
=B4=C8=B7=B6=A8=B5=D8=D6=B7=C9=CF=B5=C4=D6=B8=C1=EE=C8=A1=B4=FA0x18=B4=A6=
=B5=C4=D6=B8=C1=EE=A3=AC=CD=A8=B9=FD=CC=F8=D7=AA=D6=B8=C1=EE=CF=B5=CD=B3=BE=
=CD=D6=B1=BD=D3=CC=F8=D7=AA=B5=BD=B6=D4=D3=A6=B5=D8=D6=B7=20
<BR>;=BA=AF=CA=FD=D6=D0 =
=BD=DA=CA=A1=C1=CB=D6=D0=B6=CF=B4=A6=C0=ED=CA=B1=BC=E4=CC=E1=B8=DF=C1=CB=D6=
=D0=B6=CF=B4=A6=C0=ED=CB=D9=B6=C8=B1=EA =C0=FD=C8=E7 =
ADC=D6=D0=B6=CF=B5=C4=CF=F2=C1=BF=B5=D8=D6=B7=CE=AA0xC0,=D4=F2=D4=DA0xC0=B4=
=A6=B7=C5=C8=E7=CF=C2=B4=FA=C2=EB=A3=BAldr=20
PC,=3DHandlerADC =
=B5=B1ADC=D6=D0=B6=CF=B2=FA=C9=FA=B5=C4=CA=B1=BA=F2=CF=B5=CD=B3=BB=E1 =
<BR>;=D7=D4=B6=AF=CC=F8=D7=AA=B5=BDHandlerADC=BA=AF=CA=FD=D6=D0=20
=
<BR>;=B7=C7=CF=F2=C1=BF=D6=D0=B6=CF=C4=A3=CA=BD=B4=A6=C0=ED=B7=BD=CA=BD=CA=
=C7=D2=BB=D6=D6=B4=AB=CD=B3=B5=C4=D6=D0=B6=CF=B4=A6=C0=ED=B7=BD=B7=A8=A3=AC=
=B5=B1=CF=B5=CD=B3=B2=FA=C9=FA=D6=D0=B6=CF=B5=C4=CA=B1=BA=F2=A3=AC=CF=B5=CD=
=B3=BD=ABinterrupt =
pending=BC=C4=B4=E6=C6=F7=D6=D0=B6=D4=D3=A6=B1=EA=D6=BE=CE=BB=D6=C3=CE=BB=
=20
=
=C8=BB=BA=F3=CC=F8=D7=AA=B5=BD=CE=BB=D3=DA0x18=B4=A6=B5=C4=CD=B3=D2=BB=D6=
=D0=B6=CF <BR>;=BA=AF=CA=FD=D6=D0 =
=B8=C3=BA=AF=CA=FD=CD=A8=B9=FD=B6=C1=C8=A1interrupt =
pending=BC=C4=B4=E6=C6=F7=D6=D0=B6=D4=D3=A6=B1=EA=D6=BE=CE=BB =
=C0=B4=C5=D0=B6=CF=D6=D0=B6=CF=D4=B4=20
=
=B2=A2=B8=F9=BE=DD=D3=C5=CF=C8=BC=B6=B9=D8=CF=B5=D4=D9=CC=F8=B5=BD=B6=D4=D3=
=A6=D6=D0=B6=CF=D4=B4=B5=C4=B4=A6=C0=ED=B4=FA=C2=EB=D6=D0 <BR>MACRO =
<BR>$HandlerLabel HANDLER $HandleLabel=20
<BR><BR>$HandlerLabel <BR>sub sp,sp,#4 ;decrement sp(to store jump =
address) <BR>stmfd sp!,{r0} ;PUSH the work register to stack=20
=
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