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Battery backed-up realtime clock for the Amiga 1000 made by C.Ltd.

Timesaver is plugged between the A1000 and the keyboard; the above picture shows the "inner life" without the plastic case.
Note: there were at least two versions: one for american and one for german keyboards, due to the different clock rates.
Check out the review by Michael Portuesi posted in usenet in 1987.

How it works
• a CTRL+D is sent after booting so the startup-sequence won't be executed
• date and time are called from the boot disk (note: they have to be there) with the Timesaver values as parameters
• the startup-sequence is executed

Hardware features
• 8-bit microprocessor
• 8 KB EPROM
• 8 KB RAM
• real time clock
• battery
• switches automatically between battery and keyboard power supply when the A1000 is turned off / on

Software features
• password option
• command line history for the cli with editor to correct / modify older commands
• recording, saving and playback of macros (one or more commands)
• "auto macro" option for one macro that will be automatically executed on every bootup
• functions can be called with HELP+FUNCTION KEY, e.g. HELP+F4 to set the rtc or HELP+F5 to read the rtc.

Thanks to Rainer Schreurs