NTSC MiniMig

[amigadave]

Having Minimig PCB's manufactured to allow both PAL & NTSC with just a software switch would be best from the beginning and make them easier to sell worldwide.  I hope this is considered when redesigning for the first production run, which appears to have enough interest for 100+ units just from the replies here on Amiga.org.

[amigadave]

alexh wrote:
Another MiniMig thread clogged up with non-technical crap. :-(

Does anyone who needs NTSC / 60Hz have a working MiniMig? (not yet, see below)

Is anyone actually interested in working towards 60Hz capability? (YES) Actually getting into the verilog, Xilinx tools, boards and actually making it work? (Willing to learn)

It started out so promising and turned into useless drivel :-(

I hope to have a working Minimig before the beginning of next year.  I don't mind working on and testing changes to the verilog code, but I have no previous experience.  I also will have the parts for a second Minimig, should it become necessary to change the components (crystal(s), etc.) to make a 60Hz NTSC Minimig work.

[amigadave]

alexh wrote:

Switching MiniMig from "PAL" to "NTSC" is perhaps 4-5 lines changed in Agnus.v (maybe more in the AMBER) and a different crystal.

MiniMig only outputs RGB, and it's scandoubled so it's not really NTSC (or PAL), is it?

Has anyone successfully converted the Minimig to NTSC?  I have seen some suggestions of what changes might need to be made, but have not seen any report that anyone has done so and made it work.

There must be at least a few Minimig enthusiasts here in the USA, or in other countries where NTSC is the standard instead of PAL. (please, let's not get into any argument about which standard is better, that has been discussed at great length in the past and does not need repeating)