Shell bottom: No photoScreenshoots: No photoExtra info:
The top (non-populated) DIP40 chips has MMC3 "88" pinout.
The populated one (9051) has "9112" pinout.
7432 is indeed used for CHR/CE (with extra delay)
other DIL14 aswell as some weird non-populated vias are still being investigated.
[url=https://obrazki.elektroda.pl/7561548700_1599613596_org.jpg][img]https://obrazki.elektroda.pl/7561548700_1599613596_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/9122743500_1599613598_org.jpg][img]https://obrazki.elektroda.pl/9122743500_1599613598_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/3580369000_1599613599.png][img]https://obrazki.elektroda.pl/3580369000_1599613599_thumb.jpg[/img][/url]