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Amiga computer related discussion => Amiga Software Issues and Discussion => Topic started by: sharper on October 10, 2005, 09:38:23 AM

Title: The "+44kb" hack on A500
Post by: sharper on October 10, 2005, 09:38:23 AM

I remember composing in ProTracker on A500 and when i ran out of memory i rebooted with no startup sequence, BUT I also ran a small hack called +44kb which added 44kb of free ram. What exactly did this hack do? Was it widespread?

/axel, sweden

Title: Re: The "+44kb" hack on A500
Post by: jlariv8957 on October 10, 2005, 09:57:39 AM

Hi,

The hack was simple: when amiga start the screen display is 4 colors (2bit planes) this utility was simply changing the depth of the screen to 2 colors (1 bit plane) so you recover the memory used by the second bitplane.As far as i know I still have this utility !

Title: Re: The "+44kb" hack on A500
Post by: zipper on October 10, 2005, 09:58:27 AM

add21k, add44k ; drop bitplanes to 2-col?

Title: Re: The "+44kb" hack on A500
Post by: zipper on October 10, 2005, 09:59:38 AM

..lost by one minute...

Title: Re: The "+44kb" hack on A500
Post by: Piru on October 10, 2005, 10:34:54 AM

add36k.lzh (http://www.aminet.net/package.php?package=util/misc/add36k.lzh)

Code: [Select]

Add36k          Add36k is a very short utility that adds not only 21k, but
                36kB of ram to your free chip memory.
                This is done by removing a bitplane completely and reducing
                the other to only 50 pixels.
                FreeWare, source included
                Author : Alexander Rawass


...Read the source, luke... ;-)

Title: Re: The "+44kb" hack on A500
Post by: SamuraiCrow on October 10, 2005, 05:18:29 PM

There was another not-so-hackish solution in the OS called CloseWB supported by MED 3.22 that would close the Workbench screen altogether to free up some chip ram.