Re: Trying to cram GS/OS into a walnut

[cturley2@aol.com (Cturley2)]

Jon Bettencourt wrote:
 
> >If I were to make a ROM disk for the IIgs, how would I do it? Can it be as
> >big as 6.5MB? In what format should I save it in? Would it be the same as
> >an HDV file? I'm feeling like putting the complete GS/OS, plus a few extra
> >things, on there and booting off it.
> 
> There are two types of ROM disks.  Apple IIGS ROM disks and
> Apple II ROM disks.  Apple IIGS ROM disks are addressed
> through the memory expansion slot.  The ROM disk can be up
> to a little less than 8MB in size (8MB minus the amount of
> ROM on the IIGS).  I don't think there were any genuine ROM
> disks, but the RamKeeper fooled the IIGS into thinking on of
> its RAM cards was ROM.  The RamKeeper used a power
> supply and a battery to make this work.

<<<Well, now that I know I can fit that much stuff on it, how _do_ I fit that
stuff on it?>>>

And, I reply:  You could go download the TurboGS v6.01 boot disk, it's less
than 800k unshrunk.  The URL for it follows:

ftp://tarnover.dyndns.org/cabi/System/TurboGS601.SDK


<<<Can I just format an HDV file, copy the files over to there, and then burn
the contents of the HDV file onto EPROM chips?>>>

If you have an Apple II FlashROM card - configured with GS/OS and you have the
hardware to burn EPROM chips with that data, files, etc. - certainly in theory
- yes, you could.  See the A2 'NEW' FlashROM card,
with SW, src. codes, color jpeg pics, schematics, etc. from this URL:

<http://www.grin.net/~cturley/gsezine/GS.WorldView/v2000/Feb/New.A2.Misc.S
tuff/A2.FlashROM.card>

<<<After I do that, where would I put the EPROM chips? Could I make the ROM
Disk card myself? Would it require anything in addition to the EPROMs?
What would the schematic for the card be?>>

After you do all that - you'll have somethingthat nobody else has now. :)  But,
here what you'd do - after you do that; Put the EPROMS in the A2 FlashROM card.
 Knowing you - as I do, yes, I think you could make such an A2 FlashROM card
yourself.  It would require more than the EPROMS - yes!  Go check out the A2
FlashROM card files, text, jpeg, schematics pics, specs, etc. and so on.  See
the above mentioned URL.



<<<After doing this, could I still put more RAM into the IIgs?>>

You could put up to 8MB's of RAM into your IIgs.   Like I mentioned in my last
email to you,
I do have all the additional RAM you need to take it to 8MB's also.

Cheers,
Tom