Re: JoyLoader

From: Nejat Dilek <imruon_at_gmail.com>
Date: Tue, 22 Jan 2019 17:51:22 +0300
Message-ID: <CAP5r8NT8kSRK2jrShHnhOv183ni_DTs01n08acUuNRpGmp01kw@mail.gmail.com>
Interesting findings!

Challenge accepted :)

On Tue, Jan 22, 2019 at 10:17 AM Mia Magnusson <mia@plea.se> wrote:
>
>
> quotation mark, home, quotation mark will write an inverted S between
> two quotation marks. By moving the cursor and using space to erase the
> left quotation mark, and moving the cursor again to the right of the
> inverted S, and typing shift+Y and any reasonable address to jump to,
> and then return, it will execute a SYS.
>
> (It of course requires some machine code to execute, my idea here is to
> use screen ram as that seems to be the only way we could enter data in
> memory using the joystick ports. It will of course be a challenge to
> write some useful machine code with only the the instructions available
> using the chars that we can type).
>
Received on 2019-01-22 16:02:02

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