Re: Selectable chips & boost programming

[David Cooley <n5xmt@bellsouth.net>]

At 10:52 AM 2/28/2000, you wrote:

> I ran the identically labeled lines for a 27C128 to the ECM.  IE: A0-A16, 
> O0-O7, power, ground, OE, etc.  the lines that were additional on the 
> 27C010 should only be A17 thru A19, and those were switched to ground thru 
> the thumbwheel switch.  I can draw up a diagram tonight and send it to you 
> (and the list for that matter, as much interest as there is!)

Replying to my own message!
After looking at the pinouts for the 27C128 and 27C010, the 27C128 has 
A0-A13... 27C010 has A14-A16 additional.
They aslo need to be switched high to select the banks, and have pulldown 
resistors on them.
I'll draw up a schematic tonight and post when it's uploaded to the FTP site.

===========================================================
David Cooley N5XMT Internet: N5XMT@bellsouth.net
Packet: N5XMT@KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
We are Borg... Prepare to be assimilated!
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