SYS (Perform syscall)

The SYS instruction performs a software interrupt and sets the PC to the location specified by the following byte times 8. The handle interrupt flag is set.

Opcode

76543210
10011011

Operation

SYSF <- 1
Push (PC + 2) to register HL stack
PC <- Code[PC + 1] * 8

Assembler syntax examples

SYS \$12