Re: //c Upgrade

[gachenb@eis.calstate.edu (Greg R. Achenbach)]

lsonna@welchlink.welch.jhu.edu (LARRY ALLEN SONNA) writes:
> Hello...I'm in the process of upgrading my old Apple //c (with first edition
> ROM (FF) and 5.25" drive) and I have a few questions:
> 
> 1. Reading through these files, I learned that, in order to get a Modem
> 	to work at anything >300 baud, I needed a dealer-installed //c upgrade.
> 	I called our local dealer (who still supports the // line!), and
> 	was told that what I need is a ROM upgrade.  Now, I was under the
> 	impression that the entire motherboard needed to be swapped  - can
> 	anyone here clarify this for me?

I'm not an expert here, but i think that only the ROM needs to be
replaced, but that would involve alot of unsoldering and fiddling around
so they just replace the whole motherboard out of convenience.

> 2. With this dealer-installed upgrade, will I be able to buy a 3.5" disk drive
> 	that I can just "plug and play", or will I need some extra fiddling
> 	with the Motherboard to do so?

The only 3.5 you can use is the UniDisk 3.5, and yes it is plug and play.

> 3. I currently only have 128K of RAM, and AppleWorks 4.0 recommends at least
> 	256K.  I was surprised to find a company that offers a 1 MB RAM
> 	upgrade for $149, but they need to know what type of //c motherboard
> 	I have (the one with the expansion slot vs. the one with the CPU/MMU
> 	held in place by sockets vs. the one with the CPU/MMU soldered to the
> 	motherboard; I have the second type).  My question is - if the free
> 	//c upgrade involves a motherboard swap, which of the three board
> 	types will I end up with?

The same type you have.

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Greg Achenbach             gachenb@eis.calstate.edu
Los Angeles County Outdoor Science School

"Society is like a stew.  If you don't keep it stirred up, you get a lot of
scum on top."  Edward Abbey