Need ARM-JTAG-20-20 adapter

[bruceable]

Provide a JTAG adapter similar to https://www.olimex.com/Products/ARM/JTAG/ARM-JTAG-20-10/
but which adapts from "classic" ARM20 to a MIPI-20 cable and pin-out. The MIPI-20 is .05" pitch and thus half the size of the old .1" connector.  RISC-V debug defines MIPI-20 as one of its standard connectors here: https://github.com/riscv/riscv-debug-spec/blob/master/riscv-debug-stable.pdf, section 6.1.7 Table 6.6.  It is also defined in MIPI documentation that can be obtained from here: https://resources.mipi.org/download-mipi-whitepaper-debug-trace-connector, Table 4 column "20-pin JTAG".

[bruceable]

June 7, 2022
I would like to re-iterate that this ARM-20 to MIPI-20 adapter is needed soon.  New RISC-V based boards are coming soon with the RISC-V standard MIPI-20 connector and will require this adapter to use the Olimex probe.

--- Bruce