System Reset Apple II+

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Joined: Apr 5 2016
Posts: 32

Can you reset an Apple II+ to boot from a floppy via the keyboard?

Or do you always have to power cycle the machine?

The keyboard switch (underneath) seems to toggle RESET vs. CTRL-RESET, but both do the same thing and just bring you back to a DOS prompt and no machine restart.

With a nearly 40 year old power supply, I have to imagine this won't last long with me flipping the switch like that.

Is there a better approach - maybe hard wiring a separate switch to cycle the machine?

What do others do?

David

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macnoyd's picture
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Joined: Oct 15 2012
Posts: 224
Re: System Reset Apple II+

Call -1184
PR#6

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macnoyd

speedyG's picture
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Joined: Nov 16 2011
Posts: 2406
Re: System Reset Apple II+

macnoyds explenetion is extreme short....
if you get normal promt "]"
then just enter:
PR#6(enter)
and if you get back at the monitor promt "*"
the enter:
3D0G (enter)
this turns you back to the regular prompt "]"
and you then perform the previous command
PR#6 (enter)

speedyG

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Joined: Dec 4 2015
Posts: 43
Re: System Reset Apple II+

I know what you're saying. My A2+ locks up w/o any recovery option especially if 16k expansion is active. Get a power strip and plug just the computer in it and toggle that.

Larry G

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Joined: Apr 5 2016
Posts: 32
Re: System Reset Apple II+

PR#6 worked like a champ, thanks guys.

It's been a long time since I typed that command; it's all coming back to me now!

David

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Joined: Apr 5 2016
Posts: 32
Re: System Reset Apple II+

One more comment here, when dropping to the machine prompt '*', it is difficult to get the regular prompt ']'.

Sometimes the 3D0G (enter) works, but other times it just hangs and I am forced to do a power cycle.

Shouldn't the 3D0G (enter) always bring me to a regular prompt ']'?

speedyG's picture
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Joined: Nov 16 2011
Posts: 2406
Re: System Reset Apple II+

The "3D0G" command at the monitor promt only works if at least
a small portion of DOS has been loaded - because that command then calls
the entrypoint to Applesoft.

the true äquivalent to
PR#6
at the monitorprompt is:
C600G (enter).

Just to mention it:
PR#(number of slot where controller is inserted )
- so if contoller is in slot 5 the command would be:
PR#5 or C500G

In fact you just call with this commends rhe controller to
execute it´s code and boot again... so the command mighr change from casr to case
depending to the hardware present in the system at the very moment...
In fact there are several parts of the Apple II reference manual relalted to this topic...
and it´s recommended to read them again...
depending to the kind of crash that happened - you might in some cases prefer other solutions...
because rebooting normaly also erases the contents in memory....

sincerely
speedyG

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In early days I had a lot of money but no time - now I have no money but a lot of time....
the second part includes less friends but a lot more joy on life....

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Joined: Apr 5 2016
Posts: 32
Re: System Reset Apple II+

Thank you SpeedyG, this is just what I needed! Works great now....

MarkO's picture
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Posts: 667
Re: System Reset Apple II+

speedyG wrote:

macnoyds explenetion is extreme short....
if you get normal promt "]"
then just enter:
PR#6/b
and if you get back at the monitor promt "[b]*
"
the enter:
3D0G (enter)
this turns you back to the regular prompt "]"
and you then perform the previous command
PR#6 (enter)

speedyG

If your at the Monitor Prompt, type the Number of the Slot you want to Boot, ( say '6' ) and then Ctrl-P and then Return. No need to got back to BASIC to Reboot.

From the Monitor:
'x<CTRL-K><RETURN>' is the same as 'IN#x<RETURN>' from BASIC

'x<CTRL-P><RETURN>' is the same as 'PR#x<RETURN>' from BASIC

MarkO

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Joined: May 27 2009
Posts: 936
Re: System Reset Apple II+

One time I made a boot disk to boot a disk.

It served no other purpose than to be silly!

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Joined: Dec 20 2003
Posts: 359
Re: System Reset Apple II+

When I was using a 3.5" drive a lot, I used to often leave a disk in my 5.25" drive that booted the disk in slot 5.

Dog Cow's picture
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Re: System Reset Apple II+

whynotpizza wrote:

Is there a better approach - maybe hard wiring a separate switch to cycle the machine?

What do others do?

Use the switch on a power strip.

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