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

Re: Interview with the Apple IIGS kid



On Thu, 30 Aug 2012, BLuRry wrote:

I remember my favorite reference was a pink/white cheatsheet. I don't remember the publisher but it had an ascii chart, pokes/peeks/calls and on the back it had all opcodes info listed. I used that to hand-assemble small stuff.

There was a magazine, was it called "6502" or "Micro"? I can't remember, out of Chelmsford, MA. Devoted to the 6502 until they started covering the 6809 and then later the 68000 (I think it was still around for the 68000). They issued 3 or 4 volumes of "Best of", and I think one of them had some removeable cards, and I can almost picture one for the Apple II, it almost seems like what you describe.

   Michael

By the way, the //gs monitor and the ][DB debugging rom monitor are pretty similar and offer better disassembly and memory dump features in 80-column mode.  I believe AppleWin supports the ][DB rom.  Jace also does as well (in fact there's a configuration switch that allows you to enable it without rebooting.)

On Thursday, August 30, 2012 9:14:31 AM UTC-5, David Schmenk wrote:
On Wednesday, August 29, 2012 1:17:52 PM UTC-7, Michael J. Mahon wrote:

<aiiadict@gmail.com> wrote:



On Wednesday, August 29, 2012 5:23:57 AM UTC-7, thye...@gmail.com wrote:



( 2012t829å	UTC+8H7ö2343ÒPolymorph™S















I've just started teaching my 8 year old daughter to program in BASIC on















the IIgs also - so maybe you will have some competition in the future?















:-)  Mind you, its been at least 20 years since I did any BASIC, so the















teacher is teaching himself along the way.































Anyway, well done guys.































--































Cheers,















Mike































Find my Apple II projects online at:















http://apple2.sytes.net/















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?







Bob Bishop wrote a book called "apple visions"







http://bob-bishop.awardspace.com/Apple-II/covers/av2.jpg







If your son likes programming, 6502 is a natural graduation, and should



be fun for him.  You need 6502 instruction reference,







http://www.obelisk.demon.co.uk/6502/reference.html#LSR







Rich







And as soon as the 6502 manual is in hand, start reading good machine code.



The Apple II Monitor is an excellent beginning!







The only "warm up" to reading code might be a tiny, simple example--just to



prime the pump. I presume that binary and twos complement representations



are already understood.







It is a bit of a shock for someone used to a high level language to find



how many instructions are required just to do 16- or 32-bit arithmetic, let



alone floating-point.  ;-)







-michael - NadaNet 3.1 and AppleCrate II: http://home.comcast.net/~mjmahon



I wholeheartedly agree with Michael.  I learned 6502 starting with the code on page 48 of the Apple II reference manual.  A simple program that combines the concepts of the monitor, hex code, machine code, and mnemonics.  Along with the 6502 reference and monitor listings in the back, it was kind of like the Rosetta Stone for me.



Congratulations to Ding Wen and good luck,



Dave...