"mojoehand" <jgray@zianet.com> wrote in message 11342068-9a14-427c-bbf8-7915b2866614@q26g2000prq.googlegroups.com">news:11342068-9a14-427c-bbf8-7915b2866614@q26g2000prq.googlegroups.com...
I just tried a Z-Card in a ROM3 IIgs and even at slow speed, it won't boot CP/M. It starts to boot and hangs. It works fine in my IIe. Not a huge problem, but I am curious as to why it won't work in a IIgs.
Will take a wild stab and say probably the Z-Card flavour of CP/M doesn't take care of/turn off the 65816 interrupts before it switches to Z80 mode. Red