Commodore 64: Bad PLA or Bad 74LS139 Demultiplexer (I/O output pin of PLA has invalid TTL signal)
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Last Updated: September 29, 2026
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Summary
Episode 1333 chip of the day dual 4-bit decoder. Be a Patron: patreon.com/imsaiguy. in this video number {996} DM9321 Dual 2 Line Address Decoder with Active Low outputs, 9321 / DM9321/ 9321DMQB Dual 2 ... กฤตเมธ เนตรวงศ์ 5710500780 จิรพงศ์ สุขโต 5710502553. Online Store: utsource.net Product Link: utsource.net/itm/p/14967.html Encapsulation:DIP Brand:Ti/hit/mot ... amzn.to/4aLHbLD You're literally one away from a better setup — grab it now! As an Amazon Associate I earn ... MICROPROCESSOR 01205335 5710551678 นายพุทธาวุธท์ สังขทัต ณ อยุธยา 5710551741 นายวงศธร วงค์สุวรรณ. Detail: tok.hakynda.com/article/detail/75/hd74ls139-dual-2-line-to-4-line-decoders---demultiplexers. Explanation Function table Circuit Diagram. Initial debugging of this Commodore 64 giving a black screen: youtu.be/9jpffyz6ta Support this channel via a special ...