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| That means that someone could create a test cartridge that with the help of nmi interupts could test the machine for the errors i mentioned?
Wouldn't that be very cool?to have a cartridge that could assist in case of non recoverable hardware errors?
it would be the no 1 rom for people that want to fix faulty msx computers!Anyone interested to make one ?
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The NMI signal of the Z80 is not connected to the cartridge port. In fact it is not connected to any bus at all. So having the cartridge alone is not sufficient. You must open the MSX and solder a switch to the NMI-pin of the Z80. Otherwise you don't have the necessary hardware to trigger the NMI.
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Is the modification difficult?I think if all users did this it would be so much easier to test machine for faults.
Just a single switch and the software to do the tests.Actually it would be very good for guys that make lots of changes or fix faulty msx computers.
Has anyone from here ever done this?
I am curious about it...
Geplaatst: 06 Oktober 2007, 01:43