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SMTH01.ZY0
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SMTH01.ZY0
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1989-09-17
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35 lines
; TITLE "SMTH01 - Syslib 4.0"
NAME ('ADDHD')
;=================================================================
; The Libraries, Version 4, (C) 1989 by Alpha Systems Corp.
;-----------------------------------------------------------------
; Author : Harold F. Bower
; Derived from SMTH01.Z80 Ver 1.1 by Richard Conn
; Date : 17 Sep 89
; Version : 1.2
; Module : SMTH01
; Abstract: This module contains the routine ADDHD which adds
; the contents of two 16-bit registers, returning a flag
; if overflow occured.
; Revision:
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; Module Entry Points
PUBLIC ADDHD
.Z80
CSEG
;===============================================================
; NAME - ADDHD
; Entry: HL,DE - Contain two 16-bit unsigned values
; Exit : F - Carry Set (C) if Overflow, else Reset (NC)
; HL - Contains (HL)+(DE)
; Uses : F,HL
; Special Requirements: None
;===============================================================
ADDHD: ADD HL,DE ; Carry is set by this command
RET
END