Code listings for the I4004 or I4040

Eric Smith spacewar at
Thu Mar 17 15:23:45 CDT 2016

On Thu, Mar 17, 2016 at 1:18 PM, dwight <dkelvey at> wrote:
>  The 4289 can be used for RAM with the 4040, using the WPM and RPM. It can be used
> on the 4004 but it is limited to WPM only.

I know about that; what I was asking about was whether the 4289 (or
4008/4009) could replace "normal' 4002 RAM. I think the answer is

> In any case, please don't erase the EPROMs, thinking they are blank.
> I offer my services to read them. Also, there may be someone closer
> to you that can extract the data.

I can read them.  Or rather, I could if I had them.  The sockets are empty.

More information about the cctech mailing list