Spectrum ROM: Routine at 1FC3

1FC3: THE 'UNSTACK-Z' SUBROUTINE

Used by the routines at PRINT_CR, PR_ITEM_1, STR_ALTER and CO_TEMP_1. The routine at DEF_FN continues here. This subroutine is called in several instances in order to 'return early' from a subroutine when checking syntax. The reason for this is to avoid actually printing characters or passing values to/from the calculator stack.
UNSTACK_Z	1FC3	CALL SYNTAX_Z	Is syntax being checked?
	1FC6	POP HL	Fetch the return address but ignore it in 'syntax-time'.
	1FC7	RET Z	Fetch the return address but ignore it in 'syntax-time'.
	1FC8	JP (HL)	In 'run-time' make a simple return to the calling routine.