[En-Nut-Discussion] Meaning of the EEMU signal

[Matthias]

Hello Harald,

>In fact EEMU(A15) is held high during EEPROM emulation,
>which indeed disables the RAM. If your board works
>without using this line, fine. :-) But

>     NICOUTB(NIC_CR, NIC_CR_STP | NIC_CR_RD2 | NIC_CR_PS0 | NIC_CR_PS1);
>     NICOUTB(NIC_PG3_EECR, NIC_EECR_EEM0);

>accesses the RTL8019 and I wonder how this should
>work if A15 is floating.

Now I understand the meaning of th EEMU line, and I really wonder why it 
works at my board.

I will investigate the A15 line in the next days using a scope.


Best regards

Matthias