Re: Write games in Integer Basic

[mwillegal <mike@willegal.net>]

4K wasn't sufficient for anything significant, at least in Basic.
Once you remove the 2K that
is used for zero page, input buffers, video and so on.  Take a look at
the short dragon maze program in the red book - it requires 8k.  First
thing
anyone did after realizing the limitations of 4K was to find after-
market 16K DRAMs.  Try
to find a 4K Apple II system these days - they don't exist.

Regards,
Mike Willegal

On Jan 7, 5:12 pm, Immortal Nephi <Immortal_Ne...@hotmail.com> wrote:
> The advanced programmers purchased an original Apple II rev 0 with 4
> kilobytes RAM in old days of year 1977.  Did they use Apple II
> Reference January 1977 book to write games?  The games were written in
> either Assembly or Integer Basic to use low resolution graphics since
> they had sufficient 4 kilobytes RAM.
>
> Did programmers use monitor routines to manipulate high resolution
> graphics such as copying page 1 to page 2 and moving animation?
>
> Did anyone modify an original Integer Basic and Applesoft Basic to
> improve optimization and fix bugs?  Are modified Integer Basic and
> Applesoft Basic available as ROM images?
>
> I wanted to do reverse engineering of Montezuma Revenge by de-
> compiling and disassembling 6502 code.  I will learn how animation
> works since I had never programmed 6502 before.
>
> Bryan