---------Original Message:
From: Dan Roganti <ragooman at comcast.net>
Subject: Re: DEC8235 and MM57109N ICs
Gordon JC Pearce wrote:
Does anyone have the datasheet for an MM57109? How
hard would it be to
make a replacement, either with an FPGA or a microcontroller or
something?
I've had no luck whatsoever in finding a datasheet for this part.
I've been searching online for a long time too.
I only have the programming info from old projects.
But I too like to get the complete datasheet to check everything.
I'm hoping the folks at Area51esg would have a lead on this.
=Dan
---------Reply:
Well, considering the MM57109 is a microprocessor, it's a little more
than just a data_sheet_ unless you only want the pinout & logic diagram.
It's one of the COPS family and should be in any NSC MOS databook of
the time; if you can't find it and Area51esg can't supply it, contact me
off-list and I'll try to find time to scan it, abt. 24 pages.
mike