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ifndef included_xrsub
define included_xrsub
include "../common/pushpop.asm"
include "../common/mov.asm"
include "xadd.asm"
xrsub:
;Input:
; HL points to one number
; DE points to another
;xadd+60
call pushpop
push bc
call xrsubpp;+_
pop de
ld hl,xOP3
jp mov10
xrsubpp;_:
;copy the inputs to xOP2 and xOP3, leaving xOP1 open for shifting
push de
ld de,xOP2
call mov10
dec de
ld a,(de)
xor 80h
ld (de),a
inc de
pop hl
call mov10
jp subadd_stepin
endif