Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Dr.Bongo on May 07, 2006, 04:20:01 PM

Title: Kickstart switcher question.
Post by: Dr.Bongo on May 07, 2006, 04:20:01 PM

Hi all,

 I have just recently bought a small box of amiga chips of eBay, and included with them is a Kick start switcher with a 1.3 rom installed. I plan to put this in my A500+ but am a little un-sure of installation. My problem is that there is a yellow cable coming out of the switcher which seems to supply power to the 74hc74n logic chip, but where does this go on the Amiga?

 Thanks in advance

Title: Re: Kickstart switcher question.
Post by: adolescent on May 07, 2006, 04:36:31 PM

Usually, the cable is for keyboard/reset switching.  Try to determine the brand and model of the switch you have and then you can figure out where the wire goes.  Check out www.amiga-hardware.com to see if you can find it.

Title: Re: Kickstart switcher question.
Post by: Dr.Bongo on May 07, 2006, 04:52:00 PM

Yup, I`ve already tried that. There`s nothing like it on the amiga hardware database, also I found no likeness through google. The switcher has no manfacturer or model markings! It is basically a 10x10cm board that slots into the empty kickstart rom socket, has place for two roms on top, a 74hc74n logic chip, three resistors and the yellow cable. it also has a spare socket for 16 pin chip but nothing is fitted there. Anybody?

Title: Re: Kickstart switcher question.
Post by: amigagr on May 07, 2006, 05:07:21 PM

usualy the 74xx chips need +5 volt to operate properly. if for example has 8+8=16 pins, the +pin is the 16 and ground the 8 pin. check with this in mind your cable.