User`s manual

148 disp_ce_b <= 1’b1;

149 dot_index <= 39; // init for single char

150 char_index <= 15; // start with MS char

151 state <= state+1;

152 disp_rs <= 1’b0; // Select the dot register

153 end

154

155 8’h06:

156 begin

157 // Load the user’s dot data into the dot reg, char by char

158 disp_ce_b <= 1’b0;

159 disp_data_out <= dots[dot_index]; // dot data from msb

160 if (dot_index == 0)

161 if (char_index == 0)

162 state <= 5; // all done, latch data

163 else

164 begin

165 char_index <= char_index - 1; // goto next char

166 dot_index <= 39;

167 end

168 else

169 dot_index <= dot_index-1; // else loop thru all dots

170 end

171

172 endcase

173

174 always @ (data or char_index)

175 case (char_index)

176 4’h0: nibble <= data[3:0];

177 4’h1: nibble <= data[7:4];

178 4’h2: nibble <= data[11:8];

179 4’h3: nibble <= data[15:12];

180 4’h4: nibble <= data[19:16];

181 4’h5: nibble <= data[23:20];

182 4’h6: nibble <= data[27:24];

183 4’h7: nibble <= data[31:28];

184 4’h8: nibble <= data[35:32];

185 4’h9: nibble <= data[39:36];

186 4’hA: nibble <= data[43:40];

187 4’hB: nibble <= data[47:44];

188 4’hC: nibble <= data[51:48];

189 4’hD: nibble <= data[55:52];

190 4’hE: nibble <= data[59:56];

191 4’hF: nibble <= data[63:60];

192 endcase

193