& command

From: Marko Mäkelä (msmakela_at_cc.hut.fi)
Date: 1999-09-07 16:55:17

On Tue, 7 Sep 1999, Richard Atkinson wrote:

> Whose extensions are these? Commodore's? Are they included in the standard
> 1541 ROMs?

USR files starting with "&" can be loaded and executed in the drive by
issuing a command starting with "&".  That is not an extension; it's a
less-known feature.  Old enough 1541s will execute "&*" at startup if the
serial lines (DATA and CLK I think) are fiddled with appropriately.  
That's probably one reason why the manuals say that you should first power
up the computer and then the disk drives.


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