Re: Unknown chips

[vdpols@knoware.nl (Mick van der Pols)]

In article <4aah41$k0l@st-james.comp.vuw.ac.nz>, Rob Thomson
<Rob.Thomson@vuw.ac.nz> wrote:

> Hello,
> I have 3 chips that I have no idea what they are. 
> The first one is a 16-pin chip. It has "MCM4116AC20" printed on it.

These chips are Dynamic Ram chips to put into the mother board of the Apple][
1x16K

> 2nd is a 20-pin chip and has a 2 lots of white writing on it, the first
> lot has "341-0005-01 Apple 1978 P5" 2nd lot is "Singapore 8009X  471 
TBP18S22N"

P5 is the diskdrive prom for dos 3.2, later exchanged for P5A (dos3.3 -->
prodos)

> 3rd chip is another 20-pin device and again has 2 lots of printing on it:
> "641-0010-00 Apple 1978 8P6" and "SINGAPORE 8014X  471  TBP18S22N"
> 

This is the 2nd prom for the diskdrive interface for dos 3.2, later
exchanged for P6a for Dos 3.3 
To my opinion the rams maybe useable the other are worthles(outdated software)





> Thanks for any help,
> 
> Rob.

Lots of succes

M. Th. van der Pols
The Netherlands