$3 - BPC - Breakpoint on execute (R/W)
$5 - BDA - Breakpoint on data access (R/W)
$6 - JUMPDEST - Randomly memorized jump address (R)
$7 - DCIC - Breakpoint control (R/W)
$8 - BadVaddr - Bad Virtual Address (R)
$9 - BDAM - Data Access breakpoint mask (R/W)
$11 - BPCM - Execute breakpoint mask (R/W)
$12 - SR - System status register (R/W)
$13 - CAUSE - (R) Describes the most recently recognised exception
$14 - EPC - Return Address from Trap (R)
$15 - PRID - Processor ID (R)