i recently study the 8051EW with bank switch and can not find the bank switch user guideline or document with respect to the keil uVision setting up . I have search and read the articles about bank switch in "keil website" and on-line user guideline keilc software , but i can not still know ex : variable in XBANKING.A51 can not fully understand to configre my project Are there documents available to teach me for bank switch .... thanx. in advance