tri fpga-jtag · which chip answered the cable

IDCODEs decoded offline: 0x03636093 is an XC7A200T, 0x13631093 an XC7A100T, and an even code is no IDCODE at all (BYPASS or a broken shift). Self-test: 17 of 17 ok.

trinity-fpga $ tri fpga-jtag --decode 0x03636093                                                        
0x03636093: XC7A200T rev 0                                                                              
trinity-fpga $ tri fpga-jtag --decode 0x13631093                                                        
0x13631093: XC7A100T rev 1                                                                              
trinity-fpga $ tri fpga-jtag --decode 0x12345678                                                        
0x12345678: bit 0 clear: not an IDCODE (BYPASS or a broken shift)                                       
trinity-fpga $ tri fpga-jtag --self-test                                                                
  ok  XC7A100T rev 1                                                                                    
  ok  XC7A200T rev 1                                                                                    
  ok  all ones named                                                                                    
  ok  even code is not an IDCODE                                                                        
  ok  unknown keeps manufacturer                                                                        
  ok  ioreg: vendor 0x03fd -> [0x0008] only                                                             
  ok  ioreg: absent vendor -> []                                                                        
  ok  xc3sprog: versions                                                                                
  ok  xc3sprog: chain                                                                                   
  ok  xc3sprog: empty chain flagged                                                                     
  ok  tdo: all ones -> stuck-high                                                                       
  ok  tdo: all zeros -> stuck-low                                                                       
  ok  tdo: real code -> answers                                                                         
  ok  tdo: no line -> none                                                                              
  ok  ofl: Digilent FT232H -> digilent_hs2                                                              
  ok  ofl: unknown FTDI -> None                                                                         
  ok  ofl: idcode without revision nibble                                                               
jtag self-test: PASS                                                                                    
trinity-fpga $

recorded 2026-10-03 19:49 UTCreal 13.5 sshown 13.5 sexit codes 0 0 0 0

$ tri fpga-jtag --decode 0x03636093 $ tri fpga-jtag --decode 0x13631093 $ tri fpga-jtag --decode 0x12345678 $ tri fpga-jtag --self-test

Staged: the prompt and the typing. Real: every byte the commands printed, at the time they printed it. Any silence longer than 2 s is shown for 2 s, and the title bar says so while it happens. Edited: home directory shown as ~.

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