After the seven flash i set the pinball mpu to first test by ground
j3 pin to ground for a moment to set the display to count from 0 to
9.
The problem is that the bcd code i get is only 0000 or 1111 As i know
the mpu bcd codes is only from 0 to 9 but the 1111 is 15.
Does anyone knows if that is correct.
infrared pinball wrote:
After the seven flash i set the pinball mpu to first test by ground
j3 pin to ground for a moment to set the display to count from 0 to
9.
The problem is that the bcd code i get is only 0000 or 1111 As i know
the mpu bcd codes is only from 0 to 9 but the 1111 is 15.
The Mpu is Stern 200.Does anyone knows if that is correct.If it's a stern mpu100 rom in there, the first test is lamps, not
displays. If it's an mpu200 rom, the first test would be a burn in test which would walk the display.
1111/F=blank, which is what the first test on mpu100 firmware would show
Are you trying to capture the scoring for something like a scorbit or recording of scores? You will need to connect up the digit enables as
well to sort things out.
It is surprises me that the bcd code includes the value 1111
Στις Τετάρτη, 6 Ιανουαρίου 2021 στις 2:16:17 π.μ. UTC+2, ο χρήστης seymour-shabow έγραψε:This project may do what you want. I built up a couple and they seem to work well. I had a single display for bench testing but that needed a jumper set for what display you wanted to view. The one on the LISY site shows them all at once:
The Mpu is Stern 200.
I am trying to capture the display signal to show to lcd for my bench testing. The connections of bcd, digit enables and strobes are connected already to the pic.
I just want first only read the bcd for test at the beginning and then write the complete code.
It is surprises me that the bcd code includes the value 1111
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