Uploaded May 2026 | Updated September 2026, 2 weeks ago
I thought I was nearing completion of my restoration of COMPUTER, the name I have given to my Apple ][+ clone made by MCA of Japan... that is, if the silk screen on the motherboard can be trusted. And I'm going for a restoration here, with exceptions made for adding a Super Serial card and any expansion cards needed to make the ones that were included work.
Two weeks ago, I was able to get RAMWerks running on my Apple //e with the clone Saturn 128K card installed. While that diagnostic did not find any memory issues, I noticed that the bank LEDs did not behave as I would expect for testing all the memory on the card. Specifically, they were off for over half the test.
Since I can't test the Motorola MC3242AP address decoder in a chip tester, and I can't find schematics of the Saturn Memory Card*, I will have to try replacing it with another chip to see if the bank switch behavior changes. After a quick search of eBay (the place where I buy the things I later regret™), I should have two new old stock chips in a cute little box that arrived while I was on vacation.
(*I need the original card's schematics, not those of a modern clone, as the modern clone cards use SRAM and forego the MC3242 for extra 74-series logic chips.)
Will the MC3242AP fix the bank switching? Will I find more bad 4164's? Will I find more bad logic chips? You'll have to watch to find out!
*
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☕️ Tips or Support via Ko-fi: ko-fi.com/jdmcs
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... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: jdmcs.net/myblog
Follow me on Instagram: jdmcs.net/myinstagram
Follow me on Twitter: jdmcs.net/mytwitter
I thought I was nearing completion of my restoration of COMPUTER, the name I have given to my Apple ][+ clone made by MCA of Japan... that is, if the silk screen on the motherboard can be trusted. And I'm going for a restoration here, with exceptions made for adding a Super Serial card and any expansion cards needed to make the ones that were included work.
Two weeks ago, I was able to get RAMWerks running on my Apple //e with the clone Saturn 128K card installed. While that diagnostic did not find any memory issues, I noticed that the bank LEDs did not behave as I would expect for testing all the memory on the card. Specifically, they were off for over half the test.
Since I can't test the Motorola MC3242AP address decoder in a chip tester, and I can't find schematics of the Saturn Memory Card*, I will have to try replacing it with another chip to see if the bank switch behavior changes. After a quick search of eBay (the place where I buy the things I later regret™), I should have two new old stock chips in a cute little box that arrived while I was on vacation.
(*I need the original card's schematics, not those of a modern clone, as the modern clone cards use SRAM and forego the MC3242 for extra 74-series logic chips.)
Will the MC3242AP fix the bank switching? Will I find more bad 4164's? Will I find more bad logic chips? You'll have to watch to find out!
*
Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: ko-fi.com/jdmcs
🈷️ Support me on Patreon: patreon.com/jdmcs
📦 Amazon Wishlist: jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: jdmcs.net/myblog
Follow me on Instagram: jdmcs.net/myinstagram
Follow me on Twitter: jdmcs.net/mytwitter
![Fixing My Apple ][+ and COMPUTER Using eBay: Im Already Regretting It! (Computerized Start™ Live)](https://i.ytimg.com/vi/7E2_yCszJgg/mqdefault.jpg "Fixing My Apple ][+ and COMPUTER Using eBay: Im Already Regretting It! (Computerized Start™ Live)
YouTube started having ingest issues while I was doing the Wheel of Regrets! segment. This VOD resumes where Wheel of Regrets! left off in the first attempt: https://youtube.com/live/e2C_R8njKkQ
At least I cant blame my USB microphone this time around...
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Ive launched a merch shop: https://shop.jdmcs.com - use code APPLEFOOLS for 7% off all April Apples merchandise through April 30th!
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Adam sent me an Apple ][+ that needs repairs, and COMPUTER is suffering from bad 74LS-series chips. Can I fix both computers using eBay (the place where I buy things I later regret)? Maybe. But the more important question is, Will there be regrets along the way?
Will COMPUTER say COMPUTER again? Will the Apple ][+ say APPLE ][ again? Will all the parts even arrive in time for this stream? Youll have to watch to find out!
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#AprilApples Event Logo concept and design by myself and is available at https://aprilapples.net for use with attribution when you create AprilApples content.
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Ways to Support the Channel:
☕️ Tips or Support via Ko-fi: https://ko-fi.com/jdmcs
🈷️ Support me on Patreon: https://www.patreon.com/jdmcs
📦 Amazon Wishlist: https://jdmcs.net/wishlist
... or simply do the YouTube things: Like/Dislike, Comment, Subscribe, Enable Notifications, and participate in the Chat. These things help the channel, too!
**
Read Computerized Start™, my Official Blog: https://jdmcs.net/myblog
Follow me on Instagram: https://jdmcs.net/myinstagram
Follow me on Twitter: https://jdmcs.net/mytwitter")
