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315-5195 wrong pins ~BR/~BGACK #15
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Confirming that the output level for both pins BR and BGACK is fixed low. /PIN_BR_EN and /PIN_BGAC_EN go straight to the IO blocks, they're used to enable the open-collector output of those pins. After reset both signals should be set high, effectively leaving the pins in hi-z (there might be an internal pull-up in the chip ?). |
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pin_br_out appears as a fixed low, which would stop the M68000 forever as that is the bus request signal.
The /pin_br_en doesn't go anywhere either.
A similar story applies to BGACK.
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