Author Topic: Turn off Calc and Exit Program in Axe? (Read 15313 times)

Matrefeytontias · « **Reply #15 on:** November 27, 2012, 12:47:08 pm »

As FloppusMaximus said here :

Quote from: FloppusMaximus

Well...

- Before calling OFFSCRPT, the OS turns the LCD off and disables all interrupts (via port 3.)
[...]
- GetKey halts the CPU, which freezes the system since interrupts have been disabled.

thepenguin77 · « **Reply #16 on:** November 27, 2012, 12:56:52 pm »

Quote from: Matrefeytontias on November 27, 2012, 12:47:08 pm

As FloppusMaximus said here :

Quote from: FloppusMaximus
Well...

- Before calling OFFSCRPT, the OS turns the LCD off and disables all interrupts (via port 3.)
[...]
- GetKey halts the CPU, which freezes the system since interrupts have been disabled.

Well, then I am wrong

You've convinced me to go disassemble the mechanism that calls OFFSCRPT because I guess I don't actually know where it is.

Matrefeytontias · « **Reply #17 on:** November 27, 2012, 01:11:07 pm »

I tried to turn back the LCD on in OFFSCRPT :

Code: [Select]

.org $8001
 ld a,3
 out ($10),a
 ret
.end

It effectively turned the LCD on ... but then freezed O.o

thepenguin77 · « **Reply #18 on:** November 27, 2012, 01:24:45 pm »

Well, the problem here is that your code was not actually being run. I forgot, but OFFSCRPT copies one too few bytes (which is why it starts at $8001 btw). So, when you make your call to bcall(_createAppvar), just increase the size by one.

Matrefeytontias · « **Reply #19 on:** November 27, 2012, 01:46:51 pm »

Yay, I got it working !

This code, when turning the calc off by any mean, keeps the LCD on until you press [clear].

Code: [Select]

.org $8001
  ld a,3
  out ($10),a
loop:
  ld a,$FD
  out (1),a
  in a,(1)
  bit 6,a
  ret z
  jr loop
.end

I assume that it may be possible to run an Axe program as thepenguin77 said above but adding the two first lines of my code.

bored_student · « **Reply #20 on:** December 03, 2012, 09:51:22 am »

My problem was that the display turned off and I didn't notice the calculator was nevertheless turned on.

I will try it once again as soon as I have a bit more time

Author Topic: Turn off Calc and Exit Program in Axe? (Read 15313 times)

Matrefeytontias

Re: Turn off Calc and Exit Program in Axe?

thepenguin77

Re: Turn off Calc and Exit Program in Axe?

Matrefeytontias

Re: Turn off Calc and Exit Program in Axe?

thepenguin77

Re: Turn off Calc and Exit Program in Axe?

Matrefeytontias

Re: Turn off Calc and Exit Program in Axe?

bored_student

Re: Turn off Calc and Exit Program in Axe?