Re: [hatari-devel] LED with empty floppy drives |
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- To: hatari-devel@xxxxxxxxxxxxxxxxxxx
- Subject: Re: [hatari-devel] LED with empty floppy drives
- From: David Savinkoff <dsavnkff@xxxxxxxxx>
- Date: Sun, 4 May 2014 16:02:39 -0600 (MDT)
- Thread-index: 9PsC2dQJQ1BJtE5WgVK0saLdp7MG1A==
- Thread-topic: LED with empty floppy drives
----- Nicolas Pomarède wrote:
> Le 04/05/2014 22:03, David Savinkoff a écrit :
>
> > I looked at the schematics and the M51017AP data sheet.
> > It appears that the LED is turned on by simply selecting
> > pin 5 -- Drive 0 Select and/or pin 6 -- Drive 1 Select
> > Thus, this is a TOS BUG.
> > Furthermore, all that Hatari needs to do is turn the LED
> > on or off for the respective floppy drive by checking
> > IO-A1 and IO-A2 on the YM2149 to select the floppy
> > drives.
> >
>
> This is already how it's done in Hatari since some times. See calls to
> Statusbar_SetFloppyLed in psg.c around lines 335
>
> > You should be able to turn the drive LEDs on and off
> > individually by writing to the YM2149.
> >
> > With this information, someone Will (if they haven't already)
> > write a program to flash the floppy drive LEDs. Hatari must
> > be able to emulate this...---... ...---...
>
> This was made loooonnng time ago, see for example the "Little Color
> Demo" by Tex in 1987 http://www.pouet.net/prod.php?which=14034 (only
> drive A is flashing in this case)
>
OK. No problem for Hatari. Good.