Z-RAM
Z-RAM comes with 256K or 512K and a Z-80 microprocessor for running CP/M software. AE released their own version of the operating system called CP/AM.
Diagnostic software was part of the A2/A3 Appleworks Expander disks.
Manuals & files
Opens on ae.applearchives.com (not rehosted here).
Source page: https://ae.applearchives.com/apple_c/z-ram/