User`s manual

196 state <= state+1;

197 end

198

199 8’h09:

200 begin

201 fwdata <= 16’hD0; // Issue "confirm erase" command

202 fop <= ‘FLASHOP_WRITE;

203 state <= state+1;

204 end

205 8’h0A:

206 begin

207 fop <= ‘FLASHOP_READ;

208 state <= state+1;

209 end

210 8’h0B:

211 if (frdata[7] == 1) // Done erasing block

212 if (frdata[6:1] == 0) // No errors

213 if (faddress != MAX_ADDRESS) // ‘LAST_BLOCK_ADDRESS)

214 begin

215 faddress <= faddress+‘BLOCK_SIZE;

216 fop <= ‘FLASHOP_IDLE;

217 state <= state-3;

218 end

219 else

220 begin

221 faddress <= 0;

222 fop <= ‘FLASHOP_IDLE;

223 state <= HOME; //done erasing, go home

224 end

225 else // Erase error detected

226 status <= ‘STATUS_ERASE_BLOCK_ERROR;

227 else // Still busy

228 fop <= ‘FLASHOP_READ;

229

230 //////////////////////////////////////////////////////////////////////

231 // Write Mode

232 //////////////////////////////////////////////////////////////////////

233 8’h0C:

234 begin

235 data_to_store <= datain;

236 status <= ‘STATUS_WRITING;

237 fwdata <= 16’h40; // Issue "setup write" command

238 fop <= ‘FLASHOP_WRITE;

239 state <= state+1;

240 end

241