VGA的NIOS实现¤@ K-n 1-1 °÷ 1-2 ¤G [cW ¤T ¨t]-p¤ê§@ 3-1 VGA……………………………………………………….....P.6 ……………………………………………………...…..P.6 ……………………………………………………...P.73-1.1 VGA singals…...………………………………………….P.10 3-1.2 VGA Timing…….……………………………………….P.11 3-1.3 {` 3-2 Keyboard 3-2.1 PS2 Port…………………………………………………P.18 3-2.2 Keyboard scan codes ….………………..…………………P.19 3-2.3 {` …………...…………………………………P.20 ……….………………….………………….P.163-3 Memory Mapping…………...……………………………….P.21 3-4 ¨ SOPC Builder Nios 32……………………………P.243-5 Pin Assigment………………………..………………………P.28 | j{ 4-1 §-z 4-2 {ú …………………………………..……….……………..P.34 ……………………………..……….……………..P.3514-3 {y{ ¤- GP¤±o 5-1 ê§@¨G 5-2 °D±°Q 5-3 ¤±oPQ °ê A -I A-1 {y¨¤……………………………..……….……………..P.40………………….…………..……………………P.46 ……………………...……….…………………….P.52 ……………………….……….……………….…..P.56………………………………………