Another custom IC from Konami GX400 hardware has been reversed.After the '0005292' I reproduced time ago I took into account the '0005293' that can be found always on VIDEO board of this arcade system.
It shares same SDP64 package :
Technically this custom IC is a priority handler, pinout can be found on Nemesis schematics :
For my task I made use of Salamander bootleg (where this and the other custom ICs have been reversed with the use of 74 series logic gates ) and gathered all info found on the net about the '0005293'.Prototyping was encouraging so I came to this replacement :
After some adjusting of the code and adapting the timing to the hosting hardware the testing of the replacement was successful on my boards :
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