Re: [hatari-devel] Comment : disable RTC by default ?

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 11/05/2014 16:02, Troed Sångberg a écrit :
> Follow the hardware. As Bob says - if the default system had an RTC it
> should be available by default, else not.
>
> This actually surprised me when I started moving images between my
> Dallas DS1216 equipped STE (where I have a bootsector that synchronises
> the internal clock as well as patches a Y2K fix into TOS) and Hatari.
> Had to go hunting in the settings to turn Hataris emulation of RTC off.
>
> /Troed
>
>
> On Sun, May 11, 2014 at 3:54 PM, Bob Carpenter <hatari@xxxxxxxxxx
> <mailto:hatari@xxxxxxxxxx>> wrote:
>
>     Nicolas,
>
>     I probably do not care about this. However, would it be possible to
>     add additional machine types in the Hatari preferences to include
>     all of the major systems (ST, Mega ST, STE, Mega STE, TT, Falcon)
>     and have the real time clock checked when you selected the proper
>     machine that has one? I agree that it is easy to check the box, but
>     I know I do not know which systems contained a real time clock.
>
>     I do not know if it is worth the effort because I do not know how
>     many applications, games, or demos depend on the real time clock. I
>     would hate to have someone try to debug a problem only to find out
>     the problem existed because the real time clock was not turned on
>     and it existed on their system.

Problem is that Mega STF/STE is not really emulated in Hatari as a stand 
alone machine.

This would require :
 - FPU mc68881
 - reg ff8e21 with 8/16 Mhz and data cache
 - HD floppy
 - RTC
 - HD emul

Some of these are already available as separate options, but it's true 
we never did a stand alone "mega st" option.

If someone feels like adding it (at least a basic skeleton, I think we 
can keep the same ioMemTabST and ioMemTabSTE and just add some specific 
cases for the registers of the Mega) ? Else it can be done later.

In the meantime, I will revert the default to "false" for RTC ; with 
Troed example and with "Stax compil 65", it's more likely to break other 
things and our primary audience for emulation is certainly people who 
will run STF/STE demos or games.


Nicolas