[A83] cursor-lock with interrupt program

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[A83] cursor-lock with interrupt program


Also with the open-menu thing, I'm making a program that displayes "xxxx is 
the best" with _vputs on the home screen. It's an interrupt program. But the 
cursor sometimes stops blinking... How can I help this? It's not the 
'curlock'-flag I found out already but the calculator (83-) doesn't clear 
the 'curon' and 'curable' flags anymore when it happens... But when I press 
[CLEAR] it sometimes is back to normal.

I tried to save the entire byte from 'curflags' right before I do the _vputs 
and then put it back, but it doesn't help, it makes things ever worse! Any 
help here?
(the program works fine but the cursor should blink!)

      SUCKER [Pieter Van Nuffel]

P.S. There is no APD control in this piece of code but it will be there in a 
final version.



interrupt_start:
        di    ;don't care if needed or not...
        ex      af,af'
        exx

	in a,(2)
	push af
	in a,(0)
	push af
	ld a,$8C
	out (2),a
	ld a,$D0
	out (0),a

	bit indicrun,(iy+indicflags)
	jp nz,out-interrupt_start+$8484
	ld a,($815B) ;on home screen?
	cp $40
	jp nz,out-interrupt_start+$8484
	ld a,(819Fh) ;menu open?
	or a
	jp nz,out-interrupt_start+$8484
	ld a,($8265)
	inc a
	ld ($8265),a
	cp 40 ;do not display it every interrupt
	jp nz,out-interrupt_start+$8484
	xor a
	ld ($8265),a
	ld bc,58*256+22
	ld (pencol),bc
	ld hl,besttxt-interrupt_start+$8484
	call _vputs
	res curlock,(iy+curflags)

out:
	pop af
	out (0),a
	pop af
	out (2),a
	jp $003A


besttxt: .db "xxxx is the best!!",0

interrupt_end:


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