Zilog Z16F2810 - Manual (Page 80)

Instruction Opcodes UM018809-0611
64
ZNEO
®
CPU Core
User Manual
1111 01xx xxxx xxxx — Unimplemented
1111 10xx xxxx xxxx — Unimplemented
1111 1100 xxxx xxxx — Unimplemented
1111 1101 rrrr dddd DJNZ Rd, urel4 Decrement dst and jump if nonzero.
1111 1110 vvvv vvvv TRAP #vector8 Software trap.
1111 1111 0xxx xxxx — Unimplemented
1111 1111 10xx xxxx — Unimplemented
1111 1111 110x xxxx — Unimplemented
1111 1111 1110 xxxx — Unimplemented
1111 1111 1111 00xx — Unimplemented
1111 1111 1111 010x — Unimplemented
1111 1111 1111 0110 — Unimplemented
1111 1111 1111 0111 WDT Watchdog Timer Refresh.
1111 1111 1111 1000 STOP Enter STOP.
1111 1111 1111 1001 HALT Enter HALT.
1111 1111 1111 1010 EI Enable Interrupts.
1111 1111 1111 1011 DI Disable Interrupts.
1111 1111 1111 1100 RET Return from subroutine.
1111 1111 1111 1101 IRET Return from interrupt.
1111 1111 1111 1110 NOP No operation.
1111 1111 1111 1111 ILL Explicit illegal instruction.
Table 18. ZNEO CPU Instructions Listed by Opcode (Continued)
Opcode Format Instruction, Operands Description