Re: New Computer..

[shack@crash.cts.com (Randy Shackelford)]

In article <28MAR199407485146@vax2.concordia.ca>,
Mitchell Spector <spector@vax2.concordia.ca> wrote:
>
>	Interested, I never noticed that before. What do the "FPI" and
>"CYA" acronyms stand for, or better yet, what are the functions of these
>chips? (One is copyrighted 1986 while the later is copyrighted 1988 btw).

FPI is fast processor interface, going from old documentation. Dunno what CYA
is but I think it's been suggested here that it's control your Apple. The
second edition Hareware Reference only mentions FPI so CYA must be the same
pretty much.

>I just compared one of my ROM 01 CPUs next to my ROM 3, apparently there's
>a bit more than slight revamping to the motherboard. Many chips have been
>moved around and lots of circuit pathways have changed patterns/layout paths.

Yes there is quite a bit of difference in the layout.

>[Anyone interested in digitized-video images of both motherboard versions?
>I could do that and post the resulting SHR images to cba2. Would probably be 
>best to do scanned close-ups in four sections, so to get sharper more detailed
>scans]

That would be cool

>>The ADB controller in ROM 3 is totally different and there's more ROM for it

>	Not the controller chip in the keyboard, right? My older ROM 01s came
>with a (c)1986 ADB controller-chip, but I never opened the keyboard that came
>included with my (circa 1990) ROM 3. I've been using a keyboard originally
>shipped with a ROM 01 (which seems to work fine) but I wonder if Apple ever
>updated the ADB controller since 1986 -- in IIgs and Mac keyboards that is.

No the controller on the logic board is the one that's different. I don't
even use my original IIgs keyboard on the ROM 3, it's on the 01 that runs my
proline. In the Hardware Reference, it says the 01 has 3K ROM and 96 bytes
RAM dedicated to the ADB processor. Later on it says the ROM 3 has a redesigned
controller with 4K ROM. 

Oh yeah one thing I forgot that I saw in the Hardware Reference. The speed
register, $C036, has an extra bit defined that 01 does not have. It's called
power-on status.

>"SuperSonic Sound Edit", etc. I'm still keeping an extra ROM 01 cpu around
>for the odd game/demo that won't run, though too bad I'm out of desk space
>to set it up next to my ROM 3.. :)

Me too. I have my ROM 3 on my desk, a 01 running the proline, and another 01
in a //e upgrade case for semi-portability. I have a VOC and sound digitizer
in it and I connect it to the TV for a monitor and do sound and video stuff
with it. I'm short a hard disk so I have to boot it from Appleshare when I
use it.
--
Randy Shackelford                                "That's right, keep dancing
shack@crash.cts.com                               on the minefield"
                                                                  -Al Bundy