Apple II Programmer's Aid ROM

From: Eric Smith <eric_at_brouhaha.com>
Date: Mon Oct 28 19:24:00 2002

Sellam Ismail wrote:
> And of course if you boot the DOS 3.3 System Master on a 64K Apple ][,
> it will load the Integer BASIC ROM image (containing the Programmer's
> Aid ROM) into the upper 16K of memory.

Of which Programmer's Aid #1 occupies the addresses D000..D7FF. Integer
BASIC and a few other goodies like the floating point subroutines,
mini-assembler, and Sweet 16 reside from E000..F7FF, and of course the
monitor ROM resides from F800..FFFF. I don't recall which version of
the monitor ROM they put in the INTBASIC file.

Apple never produced any official ROM for the D800..DFFF space for use
with Integer BASIC; IIRC that area of the INTBASIC file is filled with
meaningless data. (Hmmm... is it correct to call it data if it is
actually meaningless?)

Applesoft BASIC, on the other hand, occupies all of D000..F7FF, and
can be found in the FPBASIC file.
Received on Mon Oct 28 2002 - 19:24:00 GMT