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Results tagged with apple-ii
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user 335
The Apple II series of personal computers and related software and hardware. Use [apple-iigs] for the Apple IIgs in particular, or [apple] for Apple hardware in general.
3
votes
Quick way to tell how much RAM an Apple IIe has
According to folks on IRC, the simplest method is to pop it open, and check the Aux card: apparently the "64k" is clearly stenciled on it.
Unfortunately, the ProDOS approach won't work: a couple of t …
- 1,015
20
votes
3
answers
7k
views
Quick way to tell how much RAM an Apple IIe has
What is a simple way to tell how much RAM an Apple IIe has? The main RAM is fixed, but Aux RAM can vary.
I'd like a solution that can be typed quickly from the keyboard: the context is that I'm askin …
- 1,015
10
votes
How were binary subroutines embedded in Integer BASIC programs?
In this Integer BASIC disassembly, 202/203 ($CA/$CB) is PP - "ptr: start of program". It looks like they're changing the "start of program" location, then re-running it by doing a GOTO 0.
My guess is …
- 1,015
13
votes
4
answers
1k
views
At what address do Apple II Applesoft programs get stored?
Online references disagree on whether Applesoft programs were stored at 0x801 (2049) or 0x3001 (12289). A quick test on my OpenEmulator install with an Apple II Plus definitely puts it at 0x801. Howe …
- 1,015
3
votes
Absolute maximum number of nibbles on an Apple II floppy disk track?
You might also find this discussion interesting: https://groups.google.com/forum/#!topic/comp.sys.apple2/7srpWGp1pCs
Although the Apple II could only write at 4 cycles per bit, it can read faster: if …
- 1,015
12
votes
1
answer
500
views
What is the format of the syntax tables in Apple II Integer BASIC?
In Paul Santa-Maria's disassembly of Integer BASIC (text version), you can see the syntax table split into two parts, SYNTABL and SYNTABL2. I've seen references to the tokens being stored in reverse o …
- 1,015