Does anyone has experinece on how memory banks work in z180 cpu?

this code

    global  lcall, lret, lretp, __Lbasecode
    psect   lowtext,class=CODE

BBR equ 39h     ;Bank base register


;   lcall - perform a far call

lcall:  ex  af,af'      ;save new bank number
    in0 a,(BBR)     ;get current bank
    push    af      ;save it
    ex  af,af'      ;restore new bank
    sub __Lbasecode/1000h   ;adjust bank number
    out0    (BBR),a
    jp  (HL)        ;go to new routine

lret:   pop af      ;restore bank number
    out0    (BBR),a     ;select it
    ret         ;back to caller

lretp:  push    bc      ;get adjustment
    exx         ;get some unused regs
    pop hl      ;adjustment value
    pop af      ;bank number
    pop de      ;return address
    add hl,sp
    ld  sp,hl       ;remove parameters
    push    de      ;push return address back
    exx
    out0    (BBR),a     ;restore bank
    ret         ;done.

should manage "long calls" i.e. calls to functions outside the active banks
I need to modify it to support ASCII 8K megaroms.
Any suggestion?

Quote:

Does anyone has experinece on how memory banks work in z180 cpu?

Does this article help?

The german Wikipedia page on the Z180 suggests, that memory is switched in pages of 4K in the memory area 1000-EFFF. Common areas 0 and 1 would be fixed physical memory at adress ranges 0000-0FFF and EFFF-FFFF respectively.

And Zilog also has the specifications of the z180 available as downloadable PDF ...

Is this of any help?:

[ Memory address management of HI-TECH C ]
...removed......

Never mind it was memory management till 0xFFFF

What about this:
http://www.htsoft.com/forum/all/showflat.php/Cat/0/Number/14995/an/0/page/3#Post14995

Hope it helps.