> What do I need to get started with 6502 Assembly on an apple II?
> --- I have:
> 6502 Machine code reference
> Apple IIc+
> Prodos
> Dos 3.3
> --- Things I know I need to know:
> What call prints a character?
JSR $FDED ASCII Print
JSR $FDDA Hex Print
JSR $FDE3 Nibble Print
> What call gets input of some kind (preferably 1 key at a time)
JSR $FD1B Wait for key
JSR $FD35 Peek Key
> Any calls to clear the screen?
JSR $FC58
> Any calls to position the cursor?
$20-$23 Window size
$24,25 Cursor
And then there was JSR $BF00 to execute Prodos commands ($c0 and up).
Not to forget $B700 for RWTS :) (Yes, I know, official entry point
was $3D9 and GETIOB is $3E3)
After all RTFM !
THe manual did list all of this and more. including the Monitor ROM listing.
> --- Things I know I need to get:
> Assembler
> Editor
Get a copy of BigMac, and go ahead. it's a nice all in one
environment, and works fine on every Apple. Well, Merlin
will do the same.
> I don't as yet know how to get things from the web to my Apple II, I
> use a Mac mostly to surf
Use a browser :)
Gruss
H.
--
VCF Europa 4.0 am 03./04. Mai 2003 in Muenchen
http://www.vcfe.org/
Received on Fri Feb 07 2003 - 07:56:00 GMT