//c+ switch settings, QWERTY/Dvorak (was Re: IIc+ mouse `A+ Little

From: Sellam Ismail <foo_at_siconic.com>
Date: Fri Aug 30 12:53:00 2002

On Fri, 30 Aug 2002, Robert F Schaefer wrote:

> > On Fri, 30 Aug 2002, Robert F. Schaefer wrote:
> > What is the other switch for? I don't have a //c+ handy to check, and
> > I couldn't find anything in my quick and lazy web search.
> You're not going to believe what it (still) does...

So the shenanigans continued with the //c+ :)\

I found this in Section 2.4 of the Apple ][ FAQ:

The IIc+ normally boots at high (4Mhz) speed, but if you hold down the
'escape' key on boot/reboot, it'll drop down to normal speed until the
next reboot.


This is the same way the TransWarp accelerator works on my Apple //e. You
press ESC when it's booting (the TransWarp has control of the system first
and fades in the "TransWarp" logo, during which time you can hit the key)
and it boots under regular speed (which is to say it hands control to the
mainboard 6502, whereas normally it takes control of the system with it's
on-board accelerated 6502).

You can also poke a byte (any byte will do) to location $C074 and it will
disable the TransWarp. You normally have to reset after this, and the
effect is permanent until you power cycle the computer.

Sellam Ismail Vintage Computer Festival
International Man of Intrigue and Danger http://www.vintage.org

 * Old computing resources for business and academia at www.VintageTech.com *
Received on Fri Aug 30 2002 - 12:53:00 BST

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