reifsnyderb Posted June 12, 2022 Share Posted June 12, 2022 While working on the 320k PBI upgrade I figured I'd strip it down and do a 64k upgrade. Since there was a 1064 PBI upgrade module for the Atari 600XL I figured I'd call it a 1064M. It turns out only 2 chips are needed. An AS6C1008 for the SRAM and a couple inverters off of a 74F04. It's a pretty simple circuit but works great. Turning my little 600XL into a 64k machine so I can play M.U.L.E. on it takes about 10 seconds. (You can see my priority here. ?) I should probably clean the flux off the board. lol 16 Quote Link to comment Share on other sites More sharing options...
erichenneke Posted June 12, 2022 Share Posted June 12, 2022 This is really great. Especially for folks who want to avoid physically modifying these machines in any way. Quote Link to comment Share on other sites More sharing options...
olix Posted June 12, 2022 Share Posted June 12, 2022 Looks really great. Will there be the gerber files for download? Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted June 12, 2022 Author Share Posted June 12, 2022 7 hours ago, olix said: Looks really great. Will there be the gerber files for download? I need to update the files to a newer version first. Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted February 6, 2023 Share Posted February 6, 2023 Need pass through for more PBI goodness Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted February 6, 2023 Author Share Posted February 6, 2023 17 minutes ago, _The Doctor__ said: Need pass through for more PBI goodness This could be done, of course, but would raise the cost and complexity of the board. The cost would go up by roughly $10 due to time and expenses. Most likely another 50 pin edge connector would be involved as well as a small board to act as an edge connector. Though, a possibility would be to make this a horizontal board with a PBI pass-through. The downside would be that a 320k horizontal board would have to be developed. If the board exceeds 100mm, on a side, the board cost also goes up considerably. So, at the end of the day, it all comes down to expense. Personally, I'd go with developing more 1090 solutions so as to max out the PBI goodness. 🙂 1 Quote Link to comment Share on other sites More sharing options...
+scorpio_ny Posted February 6, 2023 Share Posted February 6, 2023 What is the price difference between this board and the 320k board? Is it significant enough to warrant a board to upgrade only to 64? Quote Link to comment Share on other sites More sharing options...
reifsnyderb Posted February 6, 2023 Author Share Posted February 6, 2023 (edited) 23 minutes ago, scorpio_ny said: What is the price difference between this board and the 320k board? Is it significant enough to warrant a board to upgrade only to 64? I am selling the 64k boards for $29.95 and the 320k boards for $74.95. I try to stick with sale price being 3 times my cost of raw materials. (This includes my shipping cost to get the materials.) Because of the chip shortage, I've been using almost all glue logic...so there can be a lot of chips. Edited February 6, 2023 by reifsnyderb Quote Link to comment Share on other sites More sharing options...
+scorpio_ny Posted February 6, 2023 Share Posted February 6, 2023 Ah, I see. With the prices posted, it does make sense if someone want to only make only a minimal investment to gain the access to use the majority of the available software 1 Quote Link to comment Share on other sites More sharing options...
zylon Posted February 7, 2023 Share Posted February 7, 2023 I bought a 1064m couple weeks ago, works great. 1 Quote Link to comment Share on other sites More sharing options...
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