Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.sys.apple2.programmer > #576

Re: Apple IIe ROM and Assembly

Show all headers | View raw

Hi Rob,

Thank you very much for all your answers! I have a IIGS in a friend's home and think I'll give it a try!

When my Apple II+ arrives I'd like to try playing with different ROM's, as described on Page 14 of the Computist (http://cd.textfiles.com/computist/pdfs/hardcore.computist/issue06.pdf)

If possible, could you please point out a cheap EPROM burner on eBay that I could be using?

Thanks again,
Neo Winston

---------------

On Thursday, December 27, 2012 11:54:45 AM UTC-5, gid...@sasktel.net wrote:
> > I've read in various cracking articles about the importance of being able to stop the game execution at any time, in order to inspect the memory contents, by pressing the reset key on an Apple II, but that's not the case with my Apple IIe Platinum. 
> 
> 
> 
> You need to hold down the Ctrl key then press Reset
> 
> 
> 
> 
> 
> > One of the Assembly books I'm studying with is "Assembly Cookbook for Apple II/IIe", by Don Lancaster (http://www.amazon.com/Assembly-Cookbook-Apple-Ii-IIE/dp/0672223317) and he talks about the various ROM chips that could be present on an Apple II, II+ and IIe computers.
> 
> 
> 
> You should have the latest applesoft ROM for your enhanced IIe.  About all you can do to replace chips is change the 65C02 processor to a 65008 to give you 16 bit registers.
> 
> 
> 
> 
> 
> > 1) Do I really need to bother about the ROM I have on IIe Platinum, or should I research more about it?
> 
> 
> 
> A 65c02 gives extra instructions but you can still program in assembly for the II+, but be aware that you do not use the extra instructions  in your program.
> 
> 
> 
> Some games/programs will not work on an enhanced IIe because the require the original ROM, but these games are rare and there is an article in a Nibble magazine that allows you to revert the ROM back to a II+ ROM and store it in the language card, to play some of those games.
> 
> 
> 
> 
> 
> > 2) Would it make any difference having different ROMs for programming in Assembly, or having another ROM would just help me having fun cracking games?
> 
> 
> 
> Your current ROM's will be compatible with 99% of all games.  If it is cracking that you want to do, I recommend a IIGS for all those old games.  It is extremely easy to go into the control panel and then the monitor and view all your memory, and to save your memory state.
> 
> 
> 
> 
> 
> > 3) Is the information on Lancaster's book outdated, considering that I have an Apple IIe Platinum?
> 
> 
> 
> Yes
> 
> 
> 
>  
> 
> > 4)Is this the famous F8 ROM: http://www.ebay.com/itm/Apple-II-Applesoft-ROM-341-0011-A-/140886524315?pt=US_Vintage_Computers_Mainframes&hash=item20cd7dc19b ?
> 
> 
> 
> This is the ROM that came with my IIe enhancement upgrade kit.  You do not need it.
> 
> 
> 
> 
> 
> > 5) Could the above ROM be put on my machine without harming it? If so, what difference it would make, if any at all?
> 
> 
> 
> None.  You do not need it
> 
> 
> 
> 
> 
> > 6) Can this card be used on my Platinum computer: http://www.ebay.com/itm/Apple-II-Integer-Basic-ROM-Card-with-rare-Programmers-ROM-341-0016-/190773075044?pt=LH_DefaultDomain_0&hash=item2c6af61c64 . If yes, what good it would bring me? Would it help me coding? Would it help me cracking games?   
> 
> 
> 
> No.  You do not have a slot#0 but an Auxiliary slot instead.
> 
> You can run integer basic in the language card that is built into the memory.  You already have 64 kb and the extended 80 column card in the auxiliary slot adds another 64 kb, to make a 128 kb machine.
> 
> 
> 
> 
> 
> > 7) I've just purchased on eBay an Apple II Plus. Would it be better to program/crack using this computer, or the Platinum is OK for these tasks?
> 
> 
> 
> The Platinum is fine.  But for serious cracking, I would recommend an Apple IIGS since it has a control panel that makes stopping the program and viewing the memory contents much easier.
> 
> 
> 
> 
> 
> > 8) Should I proceed with this tutorial? Is it really worth the time for the things I want to accomplish (coding/cracking): http://www.antediluviandesigns.com/rom_hack.html
> 
> 
> 
> It is not necessary to replace any ROMs on the actual motherboard.  And you do not want to risk damaging anything through ESD.
> 
> 
> 
> 
> 
> Rob

Back to comp.sys.apple2.programmer | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Apple IIe ROM and Assembly Neo Winston <mariosergio7@gmail.com> - 2012-12-27 06:10 -0800
  Re: Apple IIe ROM and Assembly gids.rs@sasktel.net - 2012-12-27 08:54 -0800
    Re: Apple IIe ROM and Assembly msergio@bbnmedia.org - 2012-12-27 10:39 -0800
      Re: Apple IIe ROM and Assembly Antoine Vignau <antoine.vignau@laposte.net> - 2012-12-29 11:25 -0800
        Re: Apple IIe ROM and Assembly Neo Winston <mariosergio7@gmail.com> - 2013-01-03 11:16 -0800
          Re: Apple IIe ROM and Assembly Dagen Brock <DagenBrock@gmail.com> - 2013-01-03 14:56 -0800
            Re: Apple IIe ROM and Assembly Neo Winston <mariosergio7@gmail.com> - 2013-01-04 07:11 -0800
  Re: Apple IIe ROM and Assembly BLuRry <brendan.robert@gmail.com> - 2013-01-13 23:44 -0800

csiph-web