📄 com.lst
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170 2 }
171 1 LCK = 0;
172 1 P0 = 0xfe;
173 1 LCK = 1;//CS=0;
C51 COMPILER V7.06 COM 02/28/2007 16:12:35 PAGE 4
174 1 }
175
176
177 // 禁止写入
178 void Ewds(void) {
179 1 unsigned char temp,InData;
180 1 LCK = 0;
181 1 P0 = 0xfe;
182 1 LCK = 1;//CS=0;
183 1
184 1 SK=0;
185 1
186 1 LCK = 0;
187 1 P0 = 0xff;
188 1 LCK = 1;//CS=0;
189 1
190 1 InData=0x80; // 10000XXXX
191 1 for(temp=9;temp!=0;temp--) { // 9
192 2 DI=InData&0x80;
193 2 SK=1; SK=0;
194 2 InData<<=1;
195 2 }
196 1 LCK = 0;
197 1 P0 = 0xfe;
198 1 LCK = 1;//CS=0;
199 1 }
200
201 //读address中的一字节
202 unsigned int Read(unsigned char address) {
203 1 unsigned char temp;
204 1 unsigned int result;
205 1 Ewen();
206 1 SK=0; DI=1; // 110 A5-A0
207 1 LCK = 0;
208 1 P0 = 0xfe;
209 1 LCK = 1;//CS=0;
210 1
211 1 LCK = 0;
212 1 P0 = 0xff;
213 1 LCK = 1;//CS=1;
214 1
215 1 SK=1; SK=0; // 1
216 1 address=address&0x3f|0x80;
217 1 for(temp=8;temp!=0;temp--) { // 8
218 2 DI=address&0x80;
219 2 SK=1; SK=0;
220 2 address<<=1;
221 2 }
222 1 DO=1;
223 1 for(temp=16;temp!=0;temp--) { // 16
224 2 SK=1;
225 2 result=(result<<1)|DO;
226 2 SK=0;
227 2 }
228 1 LCK = 0;
229 1 P0 = 0xfe;
230 1 LCK = 1;//CS=0;
231 1 Ewds();
232 1 return(result);
233 1 }
234
235 //往address中写一字节InData
C51 COMPILER V7.06 COM 02/28/2007 16:12:35 PAGE 5
236 void Write(unsigned char address,unsigned int InData) {
237 1 unsigned char temp;
238 1 Ewen();
239 1 SK=0; DI=1; // 101 A5-A0
240 1 LCK = 0;
241 1 P0 = 0xfe;
242 1 LCK = 1;//CS=0;
243 1
244 1 LCK = 0;
245 1 P0 = 0xff;
246 1 LCK = 1;//CS=0;
247 1
248 1 SK=1; SK=0; // 1
249 1
250 1 address=address&0x3f|0x40;
251 1 for(temp=8;temp!=0;temp--) { // 8
252 2 DI=address&0x80;
253 2 SK=1; SK=0;
254 2 address<<=1;
255 2 }
256 1 for(temp=16;temp!=0;temp--) { // 16
257 2 DI=InData&0x8000;
258 2 SK=1; SK=0;
259 2 InData<<=1;
260 2 }
261 1 LCK = 0;
262 1 P0 = 0xfe;
263 1 LCK = 1;//CS=0;
264 1
265 1 DO=1;
266 1
267 1 LCK = 0;
268 1 P0 = 0xff;
269 1 LCK = 1;//CS=0;
270 1
271 1 SK=1;
272 1 while(DO==0) { // busy test
273 2 SK=0; SK=1;
274 2 }
275 1 SK=0;
276 1 LCK = 0;
277 1 P0 = 0xfe;
278 1 LCK = 1;//CS=0;
279 1 Ewds();
280 1 }
281
282
283 //读address开始的一个字节，分高字节和地字节
284 unsigned char ReadChar(unsigned char address) {
285 1 unsigned char temp=address>>1;
286 1 if(address&0x01) return((unsigned char)(Read(temp)>>8));
287 1 else return((unsigned char)(Read(temp)));
288 1 }
289
290 //写address开始的一个字节，分高字节和地字节
291 void WriteChar(unsigned char address,unsigned char InData) {
292 1 unsigned char temp=address>>1;
293 1 if(address&0x01) Write(temp,(unsigned int)(Read(temp)&0x00ff|(InData<<8)));
294 1 else Write(temp,(unsigned int)(Read(temp)&0xff00|InData));
295 1 }
296
297 //读一个字符串
C51 COMPILER V7.06 COM 02/28/2007 16:12:35 PAGE 6
298 void ReadString(unsigned char data *RamAddress,unsigned char RomAddress,unsigned char Number) {
299 1 while(Number!=0) {
300 2 *RamAddress=ReadChar(RomAddress);
301 2 RamAddress++;
302 2 RomAddress++;
303 2 Number--;
304 2 }
305 1 }
306
307
308 //写一个字符串
309 void WriteString(unsigned char data *RamAddress,unsigned char RomAddress,unsigned char Number) {
310 1 unsigned int temp;
311 1 if(Number==0) return;
312 1 if(RomAddress&0x01) {
313 2 WriteChar(RomAddress,*RamAddress);
314 2 RamAddress++;
315 2 RomAddress++;
316 2 Number--;
317 2 }
318 1
319 1 if(Number==0) return;
320 1 while(Number>>1) {
321 2 temp=*RamAddress;
322 2 RamAddress++;
323 2 temp=temp|(*RamAddress)<<8;
324 2 RamAddress++;
325 2 Write(RomAddress>>1,temp);
326 2 RomAddress++;
327 2 RomAddress++;
328 2 Number--;
329 2 Number--;
330 2 }
331 1 if(Number) WriteChar(RomAddress,*RamAddress);
332 1
333 1 }
334
335 /**********************************结束***********************************/
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 700 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 22 7
IDATA SIZE = ---- ----
BIT SIZE = 2 ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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