The little-known Apple Lisa: Five quirks and oddities
Posted 30 January 2013 - 06:48 AM
This fits the best practices of the day: you buy an application, copy the disk, then use the copy as your 'master' disk – the original disk is kept in its box and retained as an archive.
As long as that original disk is kept, you'd have no difficulty installing the application on another Lisa.
Posted 30 January 2013 - 09:11 AM
Posted 30 January 2013 - 10:31 AM
The work-around was to switch on the record safety tab on the floppy, then make a copy of it, then use that copy to install from.
Posted 30 January 2013 - 11:44 AM
As I recall, the system would not let you run an application from the master floppy, nor would it let you copy the application unless the original floppy was writeable, so it could be serialized. Apple didn't provide a way to make a bit-for-bit copy of the master disks, and since the original hardware used the proprietary "Twiggy" drives it wasn't possible to make a copy on some other machine. I once visited a customer who has multiple Lisas, and they had to keep track of which floppies went with which machines.
Posted 30 January 2013 - 12:49 PM
Posted 31 January 2013 - 02:59 PM
concerning Amiga and multi-tasking................... the 16bit motorola is multi-tasked: gary dices and slices blitters and heap stack pointers directing denice paula agnus.....................it is not about concurrent software applications
Posted 01 February 2013 - 05:48 AM
Worse, if the problem was with the board or the particular chip that housed the serial number (was it a PAL on the video hardware? I'm not sure about the details) then the Lisa had to be factory serviced so that the faulty part would be replaced with one that had the same serial number (instead of the local dealer putting in a spare part, which would have had a different serial number, in turn preventing the software from working and preventing even the possibility to reinstall it).
Modern DRM may be restrictive, but at least it is a little bit more flexible than that.