Cloning the Vortex GoldenGate Monitor Master...
 

The Monitor Master offers automatic monitor=switching between an ISA VGA and the Amiga video signal... The device is fairly simple to clone , but I worry that the TI chip next to the yellow switch has protected content... can someone confirm this? It has the TI logo and 234 302K sn74S157N , a Quadruple 2-Line to 1-Line Selector/Multiplexer
I have no idea what it does, I just opened mine in order to actually see if it can be done... someone else will build the clones :lol

http://i125.photobucket.com/albums/p...qp/gg-mm_k.jpg

no clue, but found a datasheet:
http://www.datasheetcatalog.net/de/d...N74S157N.shtml

It's a simple TTL logic chip.

so, we just find the same and solder it there? no programming at all?

@keraopi

Hello my friend, yes it is a std off the shelf TTL chip, no programming required & replacement can be dropped in

TC :D

And better: lots of equivalents! the piece is a TTL 74S157, so any 74 or 54 (military grade) with the middle letters S, F or LS will work.

Examples:
74LS157
54S157
54F157...

excellent news then! :spin

Yes, I know this is an old thread, but has anyone tried to reproduce Monitor Master?

Very old thread, but I'm in the process of cloning the Vortex Monitor Master...
Soldering one as we speak...

:-)

Is this somehow better than Ratte's Auto Switcher? It sounds very similar that the auto switching is serial activated, but I think Ratte's can also use Parallel, never used that part though.

How does someone get their hands on one of these clones? :)

Cameraman, on amibay

Cameraman on Amibay is an inactive member.