The 2 registers of JTAG (JTAG), from 0xBF801130, with their reset value and every field. The PIC32MZ0512EFF124 has 1664 registers in 92 peripherals, one page each.
Most PIC32 SFRs have three more registers right after them: CLR at +4, SET at +8 and INV at +C (T1CONCLR, T1CONSET, T1CONINV), which clear, set or flip just the bits written as 1, in one write.