Question on ProDOS SYS Files

3 posts / 0 new
Last post
tkh
Offline
Last seen: 9 years 9 months ago
Joined: Jun 26 2013 - 16:12
Posts: 34
Question on ProDOS SYS Files

I have a simple question:
How do you read ProDOS SYS files and possibly edit it?
I know a command to run it, but not to actually view the content.

Also, how do you create a bootable disk of your own program?

My plan is to 'dissect' a program (I got AppleWriter in mind) and learn it.

speedyG's picture
Offline
Last seen: 4 years 9 months ago
Joined: Nov 16 2011 - 07:45
Posts: 2493
Re: Question on ProDOS SYS Files

Hello tkh,
.sys -files can originate from different kinds of sources.... in general most of them
result from a compiler
- in such cases the result is true Machine code - not comaparable
with Apllesoft or Integer files.....

sometimes it´s possible to at least disassenly that files... depending to the complexity...

in general the best way to attept access to .sys files is
first reading the ProDOS User manual:
http://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Software/Operating%20Systems/Apple%20ProDOS/Manuals/Apple%20II%20ProDOS%20User%27s%20Manual.pdf
and afterwards reading beneath Apple ProDOS:
http://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Books/Beneath%20Apple%20ProDOS.pdf
there you will find basics about .sys-files and also advanced information in startup procaess and manipulation
of startup process ( i.e. boot stages and loading processes )
some small parts also treat manipulation of such files...
anyhow attempting such files witout that basic knowledge,
will very sure lead to severe disappointments and frustration....

sincerely speedyG

tkh
Offline
Last seen: 9 years 9 months ago
Joined: Jun 26 2013 - 16:12
Posts: 34
Re: Question on ProDOS SYS Files

Thanks for the reply!
I had read the ProDOS user manual. However, I haven't read Beneath the ProDOS.
I am checking the book...

Once again, thank you!

Log in or register to post comments