Re: [elysium-developers] Block devices [revisited]

[Adam L. <ag...@li...>]

On Thu, Mar 16, 2000 at 10:08:35AM +0100, Kasper Verdich Lund wrote:
> To
> define a filesystem applications upload a function 'owns()' -- written
> in a simple assembly-like language

Ok the simple 'assembly-like language':

A 32-bit virtual machine with 16 general purpose registers. 32-bit 'segment=
'=20
selector and 32-bit offset into each segment. The segments are disk blocks =
(the
owns() might need to read in other disk blocks).

The VM can write to a reserved segment (0xffffffff). it puts the block list
into here. It has all the boolean op's, ADD, SUB, conditional tests and jum=
ps
(but can only jump to consant values).

The compiler is half-written. An interpreter will be written first but there
is no reason why a EPC->i386 Machine Code translator couldn't be written (E=
PC->
Exo-kernel PseudoCode)

I post when things are finished and then people can destroy it as needed ;)

AGL

--=20
Smoking is one of the leading causes of statistics.