ãƣ惦ģϵy(tng)ӿڷ_8051ݔݔӿЩ
l(f)rg:2020-02-16 Դ: ժ c
ոڣ2006-09-27? ߺ飺飨1946-УhhƼWϷУϢ̌WԺڡ? hƼWϷУ Ϣ̌WԺ h 430223?
ժҪĽBSST˾Compact Flash惦CF늚cӿָһ8051ƬCϵy(tng)CFӿڽQoԔӲ·OӋܛOӋҪc?
PI~8051ƬCϵy(tng)CFӋCӿOӋ?
ЈD̖TP305 īIRaA??
ǰ ?
SӼgѸٰl(f)չǶʽϵy(tng)Ĺ׃ԽԽOӋЌ惦ҪҲS֮ԭеEEPROMȴ惦KBĴ惦ѽ(jng)oMOӋҪ@һ£Compact Flash CardCFҊD1һ惦ٶȿ죬惦_(sh)MB(sh)GBʹ惦͑\CFĽӿڷʽǞPCCӿOӋIDEʽҪچƬCϵy(tng)ʹCFҪچƬCϵy(tng)ģMIDEĹܡČӑՓ8051ϵy(tng)ЌF(xin)CFӿڵĽQ?
D1 Compact Flash Card^ʾD?
һCFӿڵ늚?
SST˾CFķb252pв֮gg25milڷbڑÕrҪOӋSCHPCBbOӋPCBbrעxmͺPСᘵ_βLjAԺPֱx_εČǾLֱʹؘCFӲtPCBϑOӋmϵNƬb?
Ҫ_f?
CFҪ_锵(sh)(j)D0D15ַA0A9Ƭx(sh)(j)xCE1CE2xƶOEWRĴxREGxæДRDY/BSYRESET?
(sh)(j)D0D15ڔ(sh)(j)xCFԹ16λ(sh)(j)ʽҲԹ8λʽxٶϵҪǺ܇r£˷8λMCUĽӿһx8λ(sh)(j)ʽ?
CE1CE2Ĺ1ʾ?
x8λʽCE2ӹ̶ƽ1CE1ЧڲͬʽfܰCE1CE2քeķQCS0CS1?
ַA0A9CFMemoryʽHַA0A3xx˿ַԽӹ̶ƽ?
REGxnjCFMB(ti)x߀xCFČԼĴREG1rx2ʾ?
MemoryʽCFĿƺ͔(sh)(j)xͨ^@ׂ˿ڵx팍F(xin)?
RDY/BSYДCFǷ̎xæB(ti)ڇ֔ԿڌCFMx֮ǰô_ДCFǷeڔ(sh)(j)x^Сrʹһӕrɡ?
H·OӋ?
D2oCFČH·D96MBCFMemoryʽ8λ(sh)(j)ӿڵMCU89C52?
D2 CFH·?
ƬC˜ʵP2P0ڏ÷ʽcCFӿCS0CS1REGքeӆƬCP2?6P2?5P2?7˿xA3A0ӵ(jng)74LS373iĵ4λַCFx_քecƬCx̖eõַ_ӹ̶ƽtϵy(tng)oCFĶ˿ڵַ顾B000B007?
INTRQBSY/RDY_ӵƬCP1.7?
CFĴ惦?
CFȡӲPķ։K惦ʽ֞Cylinder^Headȅ^(q)Sector96MBCF733棬ÿ8^ÿ^32ȅ^(q)ÿȅ^(q)512ֹ(ji)8λCFxһȅ^(q)λxһȅ^(q)֮ǰͳǰҪx^ȅ^(q)Ȼl(f)xһȅ^(q)512ֹ(ji)ҪһBm(x)x?
oһΌCFxC51Σ?
#define DataPort XBYTE\[0xB800\]?
#define Feature XBYTE\[0xB801\]?
#define SecCount XBYTE\[0xB802\]?
#define SecNo XBYTE\[0xB803\]?
#define CylLow XBYTE\[0xB804\]?
#define CylHigh XBYTE\[0xB805\]?
#define CardHead XBYTE\[0xB806\]?
#define Command XBYTE\[0xB807\]xCF˿?
CardHead=0xA0+head;îǰ^?
SecCount=0x01;һxһȅ^(q)?
SecNo=sector;îǰȅ^(q)?
CylLow=cylinder%255;λ?
CylHigh=cylinder/255;λ?
Command=0x30;ȅ^(q)?
delay1;ӕr1ms?
fori=1;i
P~惦 ӿ ãƣ惦ģϵy(tng)ӿڷ compactflash惦 compactflashx
cx