The 5 registers of SPI4 (SPI 4), from 0xBF821600, with their reset value and every field. The PIC32MZ1024ECG144 has 1245 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.
BETA