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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: BuzzBrain on February 08, 2008, 08:39:32 PM

Title: SWB-M-KS+ kickstart switch in a A600
Post by: BuzzBrain on February 08, 2008, 08:39:32 PM

Hi. :-)

I have a q.

Is pin 5 on gary chip in a a500 (pin5 | NKRES)

Same as pin 5 on Galy chip in a A600 (pin5 |CC_RESET)

NKRES, is power up keyboard reset.
CC_RESET I not sure.. any know?

The goal is to use this kickswitch on A600.

I asume CIA A is same on amiga a500 and a600. Only diffrent Package. A600 use a PLCC chip.

Thanks for any help :-)

Title: Re: SWB-M-KS+ kickstart switch in a A600
Post by: Docky_SD on February 12, 2008, 06:13:24 AM

Two signal not same as.
The CC_Reset = CreditCard Reset for PCMCIA cards
U need KB_Reset signal from U14.
The NE 555 (U14)IC generate power on reset and Keyboard reset in A600.
You find good signal: search the Q511 transistor collector pin and/or check A600 schematic to see anymore.