how to change p2020 effective address from 32-bit to 36bit in *.tcl

[982576385]

hi

 i want to know how to change the effective address of p2020 from 32-bit to 36-bit .so I can use 4GB ddr with orther memories simultaneously. and i found configuration at the *.tcl

proc envsetup{}{

#environment setup

radix x

config hexprefix 0x

config memindentifier v

config memwidth 32

config memaccess 32

config menswap off

}

1. what's mean of this function?

2. could i use the functionfunction above to solve my question?

3. how could i do that

4.if not,where can I find the solution of changing the 32-bit effective address of p2020 to 36-bit?

thank you very much!

[yipingwang]

The width of the Virtual memory space is determined by the target processor's effective address size.

For e500v2 processors the width of the Virtual(effective) memory space is 32-bit.

For processors based on e500v2, the width of the physical memory address space is 36-bit.

It is impossible to change p2020 effective address to 36bit, in the memory map you could define 1G or 2G DDR memory in CodeWarrior initialization file.

[982576385]

thank you very much!

 do you mean that i can not use 4GB with orther memories at the same time? for example,0x1:00000000-0x1:ffffffff for ddr ,and 0x0:00000000-0x0:ffffffff for nor flash and others?

thanks for your reply!

[yipingwang · Accepted solution]

You cannot use 4G DDR memory and other memories at the same time.