atinit.aii

CheckMach	equ	$fe1f			;Monitor Routine to check machine type
mli		equ	$bf00
KVersion	equ	$bfff

head_call	equ	$fc
tail_call	equ	$fd

;code		equ	$d7a9 ; end of IIgs clock driver.
code		equ	$c0f0 ; slot 7 devsel.
;
; n.b. - IIgs clock driver is in the language card RAM so it can't be
; used for 
;


		macro
&lab		wdm &arg
&lab		dc.b $42, &arg
		endm

		Macro
		_ON_LINE &params
		jsr	$BF00
		dc.b	$C5
		dc.w	&params
		MEnd

		MACHINE	M65C02
		LONGA	OFF
		LONGI	OFF

main		proc	ORG $2000

		lda	$c061			; check open apple button
		bmi	exit
		lda	KVersion
		cmp	#24			; check for ProDOS 2.4+
		blt	exit
		sec
		jsr	CheckMach
		bcs	exit

		sei
		lda	mli+1
		sta	pro_ent+1
		sta	mli_address
		lda	mli+2
		sta	pro_ent+2
		sta	mli_address+1
		jsr	fakemli
		dc.b	$99
		dc.w	dcb

		ldx	#stub_end-stub_begin
@loop
		lda	stub_begin,x
		sta	code,x
		dex
		bpl	@loop

		lda	#<code
		sta	mli+1
		lda	#code>>8
		sta	mli+2

exit
		cli
		clc
		rts

dcb		dc.b	4	; pcount
		dc.b	1	; version
mli_address	dc.w	$0000	; mli address
		dc.w	code+dcb_ent-stub_begin	; patch address
mli_slot	dc.b	$80	; ProDOS slot to use.

fakemli
		sec
		wdm	head_call
; if this drops through, no gs+ support.

		pla
		bra	exit






		;
		; this code is relocated to $d7a9, after the IIgs clock driver.
		;
stub_begin
		wdm	head_call
pro_ent		jsr	$0000
dcb_ent		dc.b	$0
		dc.w	$0000
		wdm	tail_call
		rts
stub_end
		if (stub_end-stub_begin)>16 then
		aerror	'stub code overflow'
		endif

		endp


		end