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The Amiga Smart File System

en.wikipedia.org

11–20 of 34 posts

Re: The Amiga Smart File System

#11
post #5

This was introduced four years after Commodore went bankrupt. Not even Lisp Machine hackers have the dedication of Amiga hackers.

The Lisp Machine has an emulator ported to ARM64. Twenty years after it went bankrupt.

Amiga has an updated m68k-compatible CPU implementation http://www.apollo-core.com/ ;-)

(well, it's an FPGA, not an actual taped-out ASIC, but it's still faster than the Motorola 68060. it's a very cool product.)

Re: The Amiga Smart File System

#14
See also https://en.wikipedia.org/wiki/Professional_File_System which had a slightly different method of maintaining integrity. The filesystem metadata state would atomically change when the root block was updated, with all the actual changes being written to free space until then. You could do a load of writing, and hear the hard drive chugging away. Then it would finish, wait a second, and the hard drive would go "click", which was the atomic root block update.

It also had a rather interesting feature for log files, where you allocated a set size, and any appending onto the end of the file that made it longer would discard the part at the beginning of the file, without allocating any new space.

Re: The Amiga Smart File System

#15
post #5

This was introduced four years after Commodore went bankrupt. Not even Lisp Machine hackers have the dedication of Amiga hackers.

The Lisp Machine has an emulator ported to ARM64. Twenty years after it went bankrupt.

And how can one obtain this emulator?

If you can’t get it, it may as well not exist.

Re: The Amiga Smart File System

#17
post #6
post #2

I try not to be /that Amiga guy/, but every time I dip in to a little Amiga history it leads me deep in to a rabbit hole of things that still amaze me. Thinking about storage now… My favourite drop in disk hack was probably diskspr¹ to store 980k on a double-density disk, which worked by replacing trackdisk.device². And awesome libraries like xpk³, which allowed you to add aftermarket compression/encryption support t…

X-Copy [1] also bring back memories. And some guilty ones. * [1] http://www.generationamiga.com/2016/12/23/xcopy-amiga-pirate...

Argh, that link is cringeworthy. Amiga wasn't killed by piracy, but rather committed suicide thanks to atrocious commercial and stategic moves by Commodore's various owners. The DOS market had the same amount of piracy and none of the hardware manufacturers had any problem surviving.

Re: The Amiga Smart File System

#18

See also https://en.wikipedia.org/wiki/Professional_File_System which had a slightly different method of maintaining integrity. The filesystem metadata state would atomically change when the root block was updated, with all the actual changes being written to free space until then. You could do a load of writing, and hear the hard drive chugging away. Then it would finish, wait a second, and the hard drive would go "…

> It also had a rather interesting feature for log files, where you allocated a set size, and any appending onto the end of the file that made it longer would discard the part at the beginning of the file, without allocating any new space

Neat! Thanks for that link.

Re: The Amiga Smart File System

#19
post #2

I try not to be /that Amiga guy/, but every time I dip in to a little Amiga history it leads me deep in to a rabbit hole of things that still amaze me. Thinking about storage now… My favourite drop in disk hack was probably diskspr¹ to store 980k on a double-density disk, which worked by replacing trackdisk.device². And awesome libraries like xpk³, which allowed you to add aftermarket compression/encryption support t…

to store 980k on a double-density disk

We had something like that in the PC world too: https://en.wikipedia.org/wiki/2M_(DOS)

Re: The Amiga Smart File System

#20
post #17
post #6

Earlier quoted context omitted.

X-Copy [1] also bring back memories. And some guilty ones. * [1] http://www.generationamiga.com/2016/12/23/xcopy-amiga-pirate...

Argh, that link is cringeworthy. Amiga wasn't killed by piracy, but rather committed suicide thanks to atrocious commercial and stategic moves by Commodore's various owners. The DOS market had the same amount of piracy and none of the hardware manufacturers had any problem surviving.

I prefer to tell people amiga went out of business because they built the best computer in the world, and decided close down so everyone else could have a fair chance.
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