*The two controllers provide different boot code, making the boot disks NOT interchangeable between the machines.
*9512(+) runs versions 2.x of CP/M, other machines run 1.x. Don't worry, the only differences are the boot sector and the printer driver code.
*The machines , including the PcW10, are otherwise entirely identical and use the same gate array.
*PcW16 is a totally different and incompatible machine.