Re: SD: RE: New operating system...

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Re: SD: RE: New operating system...


The big question here is, why? I haven't needed 10k of RAM in any
assembly program, and I don't forsee any program needing 10000 numbers
stored (or 1000 floating pt. nums).  If you could find some way to give
the TIOS the boot, than go for it. Just remember that most people use
these for their original purpose, math. The games are just an added
bonus. Without the TIOS, the calculator would be useless; just a gameboy.

I'm not trying to discourage you, and if you want to go for it, than do.

BTW: CP/M, the OS that Microsoft ripped off of for DOS is written for the
Z80. I can give you the source, if you want. (note that it won't compile
as written under TASM or assembly studio.).

--James


>Here, this is a "raw" memory layout of the core OS that I am 
>advocating, 
>and working on designing.  Assign pages 1, 0 to be "program ram" and 
>let 
>them be loacted right beside each other in memory.  The top 6kbytes of 
>
>ram would be left alone to provide double buffered 3-bit grayscale.  
>The 
>next segment of ram going down the ram, would contain the OS-kernel.  
>
>And as soon as the kernal is brought online, it automaticall 
>boot-loads 
>a "default" shell out of ram-disk(pages 2-7).  This default shell 
>would 
>be very minimal... analagous to a unix box, or dos shell.  Anyway, I'm 
>
>thinking a good kernel can be made to fit ~6-8kbyes at the most.  And 
>a 
>default shell
>should be possible in about 2-3k at the most.  So 6kbytes for video, 
>8kybtes for kernel, 3 kbytes for shell (and when a program is run, the 
>
>shell will be replaced, so its size it not really relevent)  But that 
>is 
>at most only 14kbytes...  The rest of the 18Kbytes of program ram is 
>left to the use of the programer.  Plus a full 96Kbytes of ram-disk 
>space.  No shell provieds that kind of flexability.  Of course this 
>would require an incompatible platform, but I'm not afraid of that.
>
>>Hope this cleared up some stuff.
>>
>>--James
>
>
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