Re: [Openocd-development] [patch/rfc] cleanup TAP ircapture/irmask

2009-09-26 Thread David Brownell
On Saturday 26 September 2009, Igor Skochinsky wrote: > DB> REQUEST:  someone with the IEEE JTAG spec, please verify that > DB> entry to IR_Capture state is required to load the shift register > DB> with x01 bits (as I'm told it does). > > Not the actual spec, but the Boundary-Scan Handbook sa

Re: [Openocd-development] [patch/rfc] cleanup TAP ircapture/irmask

2009-09-26 Thread Igor Skochinsky
Hello David, Saturday, September 26, 2009, 8:11:26 AM, you wrote: DB> REQUEST: someone with the IEEE JTAG spec, please verify that DB> entry to IR_Capture state is required to load the shift register DB> with x01 bits (as I'm told it does). Not the actual spec, but the Boundary-Scan Handboo

[Openocd-development] [patch/rfc] cleanup TAP ircapture/irmask

2009-09-25 Thread David Brownell
JTAG IR scans are a bit wierd ... you can't read instructions, you get some bitstring with 01 as two LSBs. Or so (I'm told) says the IEEE spec. (Note that if all higher bits were zero too, it would be possible to autoconfigure IR length...) Change the handling of the "-ircapture" and "-irmask" p