The version with external 5 x 64k memory is definitively in Osborne-1 disk drawer.
But Osborne does not work. It was so heavily modified that it will never work. The external memory was partially visible in memory space. And the display driver was improved to have 80 columns.
Now that I think about it, it might be possible that it could work in both configurations. The external memory was kinda bulky and not suitable for portable computer.
It would have been wasteful to keep the main memory empty. Or maybe it was reserved for compiled functions?
timonoko|10 months ago
But Osborne does not work. It was so heavily modified that it will never work. The external memory was partially visible in memory space. And the display driver was improved to have 80 columns.
But the stand-alone CP/M-version is long gone.
timonoko|10 months ago
It would have been wasteful to keep the main memory empty. Or maybe it was reserved for compiled functions?