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1. Clarissa Walker (amisapphire@cwcyrix.nsupdate.info)'s status on Sunday, 28-May-2023 22:22:30 EDT Clarissa Walker
   All week, I was building a homemade parallel buffered JTAG circuit. Honestly, this should've been done years ago. But the current routers I am using does utilize JTAG, so it's not a total waste.
   
   I originally had issues with the circuit, but it eventually worked on the old eMachines T1360 desktop. I also switched the 74HC244 IC before this, so who knows. I should try the original IC again sometime, as I think the original one is fine. (I miswired two pinouts on the test Linksys WRT54G-TM unit at some point.)
   • Clarissa Walker (amisapphire@cwcyrix.nsupdate.info)'s status on Sunday, 28-May-2023 22:24:13 EDT Clarissa Walker

     in reply to
     Pinout of the test Linksys WRT54G-TM on the homemade JTAG circuit. http://cwcyrix.nsupdate.info/gnu-social/public/url/27
   • Clarissa Walker (amisapphire@cwcyrix.nsupdate.info)'s status on Sunday, 28-May-2023 22:32:08 EDT Clarissa Walker

     in reply to
     Status of WholeFlash dump using the practically elusive TJTAG 3.0.2.1 (known as EJTAG Debrick Utility v3.0.2.1 Tornado-MOD) with the unit. Took about 38 minutes to dump the entire flash chip on the system.
     
     An issue with this version: On Windows XP (on USP4, not sure on official SP3), upon calculating the elapsed time after the dump is finished, it crashes. But hey, at least you receive your file in the process. http://cwcyrix.nsupdate.info/gnu-social/public/url/30
   • Clarissa Walker (amisapphire@cwcyrix.nsupdate.info)'s status on Sunday, 28-May-2023 22:58:09 EDT Clarissa Walker

     in reply to
     The circuit may work well with 74HC244s, but I implore you, try to source 74HCT244s! You will run into much fewer issues in the long run.
     
     You may likely run into a rare HC variant that will not work properly with TTL behavior for this circuit (most will work, of course, but still...).
   • Clarissa Walker (amisapphire@cwcyrix.nsupdate.info)'s status on Tuesday, 30-May-2023 15:04:15 EDT Clarissa Walker

     in reply to
     Tested the JTAG circuit again with the first 74HC244. Confirmed: it does not work. Inserted the second 74HC244 in the circuit, and it works perfectly. The first part is known good.
     
     I may have run into the one 74HC244 that does not work with TTL spec so far! 😮 But, this is why I have ordered six of them. This is also a reminder to use the recommended 74HCT244 for the buffered JTAG (Wiggler) circuit instead.