[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Interview with the Apple IIGS kid

On Wed, 29 Aug 2012, D Finnigan wrote:


thyechean wrote:


Thank you!

Ding Wen is now starting to look into... 6502 assembly language!

What is the simplest way for him to learn assembly? The fun way?



Pencil, piece of paper, and a guidebook to the instruction set that also
shows the hex opcodes.
An ASCII chart, and I kept handy a chart from I think Kilobaud that was a table of offsets for relative jumps. It was easier than calculating them. I photocopied the page, glued it on a piece of cardboard. 

  Michael



Write the assembly on the rightmost columns, then write the machine language
to the left. Just like the Monitor's disassembly screen.

Power on the Apple II, type in the machine language hex bytes in the
Monitor, and go.

For learning, this seems to give two advantages over using an assembler
program:

1.) You're learning the machine language opcodes too
2.) Pencil and paper is just more convenient for shorter programs

I've been using this method recently. Plus it allows for an instant
hard-copy of my program in case of computer disaster!

--
]DF$
Apple II Book: http://macgui.com/newa2guide/
Mac GUI Vault: http://macgui.com/vault/
Usenet Archive: http://macgui.com/usenet/