+Firedawg Posted December 21, 2013 Share Posted December 21, 2013 Very nice Simius! Can always use more speed. Count me in for 1 or 2 when they become available. Mike Quote Link to comment Share on other sites More sharing options...
venom4728a Posted December 21, 2013 Share Posted December 21, 2013 I would also like 2. Robert Quote Link to comment Share on other sites More sharing options...
atari8warez Posted December 26, 2013 Share Posted December 26, 2013 (edited) It's just a FIFO/buffer to help prevent serial overrun which can be an especial problem at the higher speeds. It doesn't actually play any part in determining what SIO speed is in use though. OK, selling it short - "it's just" is understating - this is giving us something that Pokey could well have done with in the first place. Ok thanks, so it makes high speed SIO more reliable by buffering incoming bytes and that we can use Pokey divisor 0 without hiccups. I hope I finally got it Edited December 26, 2013 by atari8warez Quote Link to comment Share on other sites More sharing options...
Simius Posted December 27, 2013 Author Share Posted December 27, 2013 All devices are ready for shipment. I can accept the payments now. Info on the PM. Quote Link to comment Share on other sites More sharing options...
venom4728a Posted April 12, 2014 Share Posted April 12, 2014 (edited) Hello, I installed the FIFO mod in my 130XE but have not tried using it yet, I have not altered the default value in the $register listed above. I was testing out some new floppy drives i had just picked up, but none of them were working. After several failed attempts at getting a floppy to boot, I figured I would get out a known good drive and make sure the disk I was using were still OK. The known good drive is a Happy 1050, and it would only boot in Hi-speed OS. At first, I wrongly assumed it a was and issue with the stock OS I had flashed in my u1mb. I have tested all my drives with FIFO installed and have mixed results. Stock 1050's would not boot at all in standard or hi-speed OS. Indus, Rana and XF-551 would boot, but load data was sometimes corrupted. I was preparing to drop in a stock OS and MMU, when I spotted the FIFO mod and decided to try pulling it first. After pulling the FIFO board everything is back to normal and booting normally. Are the FIFO mods defaulted for Hi-speed mode? Do I need to disable the FIFO Mod while using floppy drive? Any one else have similar issues with fifo and floppy's? Best Regards Robert Edited April 12, 2014 by venom4728a Quote Link to comment Share on other sites More sharing options...
Simius Posted April 14, 2014 Author Share Posted April 14, 2014 (edited) Strange. There should be absolutely no problem with any floppy drive at normal speed, because the input state is simply (with very small delay) copied to the output, regardless of the clock rate. It may be some hardware problem. I don't know what. Capacitors are removed as described? You can always send back. Edited April 14, 2014 by Simius Quote Link to comment Share on other sites More sharing options...
venom4728a Posted April 14, 2014 Share Posted April 14, 2014 I must have missed the part that said we needed to remove some capacitors? Which ones? Best Regards Robert Quote Link to comment Share on other sites More sharing options...
Simius Posted April 15, 2014 Author Share Posted April 15, 2014 Marked red on the picture. Quote Link to comment Share on other sites More sharing options...
Bumzyman Posted April 17, 2014 Share Posted April 17, 2014 Simius, are these still available, whats the cost, and how do we order? Quote Link to comment Share on other sites More sharing options...
Simius Posted April 18, 2014 Author Share Posted April 18, 2014 (edited) There is still a few. 25USD+6USD shipping. Payment by Paypal. The same address as before, when paying for the IDE+. Edited April 18, 2014 by Simius Quote Link to comment Share on other sites More sharing options...
Kyle22 Posted February 26, 2017 Share Posted February 26, 2017 Bump. Are there any of these left? Quote Link to comment Share on other sites More sharing options...
Simius Posted February 27, 2017 Author Share Posted February 27, 2017 Last two. Quote Link to comment Share on other sites More sharing options...
tuf Posted March 1, 2017 Share Posted March 1, 2017 I'll take one if any left - I forgot all about this. Quote Link to comment Share on other sites More sharing options...
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