Spectrum ROM: Routine at 04496

04496: THE 'SET-HL' AND 'SET-DE' SUBROUTINES

Used by the routine at CLEAR_SP.

These subroutines return with DE pointing to the first location and HL to the last location of either the editing area or the work space.

Output
DE	Address of the first byte of the editing area or work space
HL	Address of the last byte of the editing area or work space

SET_HL

04496

LD HL,(23649)

Point to the last location of the editing area (WORKSP-1).

04499

DEC HL

04500

AND A

Clear the carry flag.

This entry point is used by the routines at ED_EDGE and ED_COPY with the carry flag set.

SET_DE

04501

LD DE,(23641)

Point to the start of the editing area (E-LINE) and return if in 'editing mode' (bit 5 of FLAGX reset).

04505

BIT 5,(IY+55)

04509

RET Z

04510

LD DE,(23649)

Otherwise point DE at the start of the work space (WORKSP).

04514

RET C

Return if now intended.

04515

LD HL,(23651)

Fetch STKBOT and then return.

04518

RET