Re: Apple ][+ won't boot system master

["GarberStreet" <willy46pa@comcast.net>]

Michael J. Mahon <mjmahon@aol.com> wrote in message
20050108190232.11588.00002906@mb-m29.aol.com">news:20050108190232.11588.00002906@mb-m29.aol.com...
> John Smith Jsmith@cox.net wrote:
>
> >I haven't been able to figure this one out.  Here's the system.
> >
> >Apple ][+, 48K, 16K Apple Language Card, Apple Disk controller card.
> >
> >It will run a number of games with the 16K Apple language card
> >installed, but for some reason won't boot any of my 3.3 system master
> >discs.  Some of the system master discs result in the system hanging
> >with the drive spinning.  Another one causes it to break out into
> >machine language, at address 3003 I believe.
> >
> >If I remove the Apple language card and install one of the chips from
> >the card in the empty motherboard socket, it won't boot at all and
> >throws up a screen full of asterix characters.
> >
> >The chip from the language card is different than those on the MB.
> >
> >Does anyone have any ideas what is going on here?
>
> Just a wild idea--are you using a DRAM chip or one of the LS TTL
> chips on the Language Card to fill the vacated main board socket?
>
> It has to be a 16KB DRAM (4116 type) to work.

Or a modified 4164 as described here.  :o)

http://garberstreet.netfirms.com/Dramming.html

They work in a pinch, but I don't recommend
that you use them in all sockets.

Apple II Forever, and Apple II Together,
Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy46pa@comcast.net