Shifting banks

Hello, All! Given: 4 memory banks (for example 0,1,3,4), filled with 4 important things. 4th is required: Present them as a whole piece #0-#FFFF and perform on them for example: LD HL,#4114 LD DE,#0030 LD BC,#0-#4114 LDIR Or some kind of LDDR. 4th I need ;) : As fast as possible, like this implement (without ldirs, of course) but using PUSH POP. And for As fast as IHTov (minimum) such a thing can be scrolled. Thank you all in advance for U4astie!! :) With _BEST_ wishes Evgeny.