7 Jun 2017

Section Z - Capcom 1985 (repair log)

Again a simple fix. Game worked fine but was missing the text layer.

I know quite well Capcom boards of that era: text graphics are stored in ROM 05. Circuitry is quite simple: one ROM, one RAM and few TTL on buses. I probed the RAM and ROM and found activity were it should be. I pulled the ROM anyway to check it on my programmer:

The chip has probably lost its internal connection to one of the power leg (ground or Vcc). I burnt a new one and text layer reappeared:

Game fixed.

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