This Z3 slow access is why OS4.1 Classic will not use RAM boards on the Z3 bus (too slow) but will only use RAM on the Cyberstorm board.
:roflmao: If you talk to the right guys, you will find out, that this is not the reason for blocking Z3 RAM in OS4.1...... the reason is to avoid emulation, to force people to buy NG-Hardware.... because they finance hyperion and are not interested in giving other Users the chance to use 4.x without buying the Harware....
I know that it is working! And fast enough for classic Hardware.... And for example NetBSD can use it as normal ram... I tried it.....