[Rpcemu] FW: RPCEmu 0.8.8 and timing

Timmermans, Andre andre.timmermans at siemens.com
Thu Oct 14 06:05:51 PDT 2010


Hi,

just out of curiosity I just tryed again and the timing and sound
problems are back, which would confirm it's an initialisation problem.

André

> -----Original Message-----
> From: rpcemu-bounces at riscos.info 
> [mailto:rpcemu-bounces at riscos.info] On Behalf Of Timmermans, Andre
> Sent: jeudi 14 octobre 2010 10:31
> To: rpcemu at riscos.info
> Subject: [Rpcemu] FW: RPCEmu 0.8.8 and timing
> 
> 
>  
> 
> -----Original Message-----
> From: Timmermans, Andre 
> Sent: jeudi 14 octobre 2010 10:15
> To: 'Matthew Howkins'
> Subject: RE: [Rpcemu] RPCEmu 0.8.8 and timing
> 
> > -----Original Message-----
> > From: mhowkins at gmail.com [mailto:mhowkins at gmail.com] On 
> > Behalf Of Matthew Howkins
> > Sent: lundi 11 octobre 2010 19:43
> > To: Timmermans, Andre
> > Cc: rpcemu at riscos.info
> > Subject: Re: [Rpcemu] RPCEmu 0.8.8 and timing
> > 
> > > having received a new fast portable from my employer, I 
> > thought I could
> > > give RPCEmu a try.
> > > The machine works under Windows XP SP3 and I used the RISC 
> > OS 4.02 roms.
> > >
> > > It works fine for the few trials I have made, except for 
> > the stuttering
> > > sound which is a documented problem,
> > > but I noticed an oddity when I tried to test it's speed 
> > with KinoAmp (with
> > > option to play sound disabled).
> > > The replay of even light files which work at full speed 
> > under my RPC are
> > > replayed too slowly
> > > at +- 65% of their normal speed. I thought it could be a 
> > problem with the
> > > timer module
> > > which makes use of the IOC timer 1, but the problem remains 
> > even when using
> > > KinoAmp with the --ostimer option
> > > to use SWI OS_ReadMonotonicTime for its timings.
> > 
> > 
> > Please provide a copy of the rpclog.txt that is generated, 
> and then I
> > will see if I can reproduce the problem with the same configuration.
> > 
> 
> Here follows the rpclog.txt.
> Now the curious thing is that I made new several attempts, and it now
> works though I don't know why.
> 
> First I took a backup of the rpclog.txt file, disabled sound 
> in RPCEmu,
> stopped and restarted the emulator just to make sure, no difference.
> 
> An hour later, I thought that it could be due to KinoAmp
> resetting when it detects that to much time was spend between
> its pool loops (to avoid "fastforwarding" when another application
> blocks the desktop for a few seconds). So I fired RPCEmu again,
> and enabled full logging in KinoAmp (see file !Kino.RunKino).
> I played a file, no sync issue in the logs, played a second one
> and actually noticed that the timings are correct.
> I then disabled logging in KinoAmp, timings still correct.
> As it seems to be working I enabled sound again in both KinoAmp
> and RPCEmu, restarted RPCEmu and tried again.
> 
> Everything now works fine, and sound is playing correctly,
> which was not the case in my first trials the day I posted
> the first email. That day sound replay was stuttering
> in both DigitalCD and KinoAmp, but since the ReadMe
> and IIRC several posts on this mailing list mentionned
> that sound was problematic I hadn't say anything.
> 
> The rpclog.txt file is now identical again to the backup
> (I performed a diff on the two files just to make sure),
> but it now works. I can only conclude that there is
> a initialisation issue in RPCEmu which affects both
> the IOC timers emulation and sound (if timing is too slow
> that could lead to sound buffer filling interrupts
> being fired too slowly, which would account for the sound
> problems).
> 
> Kind Regards,
> André
> 
> 
> 
> RPCEmu 0.8.8 [DYNAREC NO_DEBUG]
> Build: 32-bit binary
> Compiler: GCC version 3.4.5 (mingw-vista special r3)
> OS: Microsoft Windows
> OS: PlatformId = 2
> OS: MajorVersion = 5
> OS: MinorVersion = 1
> OS: ProductType = 1
> OS: SuiteMask = 0x100
> OS: ServicePackMajor = 3
> OS: ServicePackMinor = 0
> OS: ProcessorArchitecture = 0
> OS: SystemMetricsServerR2 = 0
> Allegro version ID: Allegro 4.2.2, MinGW32
> Host Colour Depth: 32
> loadconfig: network_type = "off"
> loadconfig: mouse_following = "0"
> loadconfig: cdrom_type = "0"
> loadconfig: cdrom_enabled = "1"
> loadconfig: blit_optimisation = "0"
> loadconfig: refresh_rate = "60"
> loadconfig: stretch_mode = "1"
> loadconfig: sound_enabled = "1"
> loadconfig: vram_size = "2"
> loadconfig: cpu_type = "SA110"
> loadconfig: mem_size = "64"
> loadconfig: ipaddress = "172.31.0.1"
> initpodulerom: Successfully loaded 'hostfs,ffa' into podulerom
> initpodulerom: Successfully loaded 'hostfsfiler,ffa' into podulerom
> initpodulerom: Successfully loaded 'SyncClock,ffa' into podulerom
> HostFS: Registration request version 1 accepted
> 
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