openMSX about to release: testing help wanted!

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By ren

Paragon (1869)

ren's picture

26-10-2014, 13:12

Just curious; fMSX 3.9's changelog mentions fixes/improvements to the AY8910 emulation.
Is all that stuff covered by openMSX already (don't know if you've looked into it), or could there possibly be new stuff for openMSX to implement from those improvements/fixes? Face Hannibal

By ARTRAG

Enlighted (6539)

ARTRAG's picture

26-10-2014, 15:14

Fmsx had a very rudimental AY emulation, there is little chance you can improve openmsx on fmsx basis

By diedel

Resident (48)

diedel's picture

26-10-2014, 18:15

Manuel wrote:

OK, looks like we do not understand the MSX1 VDP access timing well enough yet, so we had to relax some timing restrictions to get this case working. Please try version 344-gc398941 or later..

Thanks Manuel!
Now it works OK!

By Manuel

Ascended (18148)

Manuel's picture

26-10-2014, 18:47

OK, thanks for confirming. If there's anything else, just let us know, please!

By wouter_

Champion (467)

wouter_'s picture

26-10-2014, 20:54

ren wrote:

Just curious; fMSX 3.9's changelog mentions fixes/improvements to the AY8910 emulation.
Is all that stuff covered by openMSX already

Just took a quick look at the changelog / source code ... seems like all those changes are already in openMSX (for a long time). But thanks for suggesting it anyway.

By Sandor

Rookie (23)

Sandor's picture

28-10-2014, 13:19

Hi,

There might be something wrong how openmsx handles the "screen splits"
For example:
When i run the zanac-ex rom in bluemsx the screen shows corrext in msx2 mode.
https://dyp.im/oCKqHd2FjK

When i run the same rom in openmsx in msx2 mode the scorebar on top of the screen is missing.
https://dyp.im/34iqpuEJrJ

Also there is a screen split problem in the "ANMA the source of power".
This is probably the same issue.

bluemsx:
https://dyp.im/eiR0HVEM80

openmsx:
https://dyp.im/nAK3W3W9nc

youtube:
http://www.youtube.com/watch?v=sJA_ObYX--Q&t=2m0s

By Manuel

Ascended (18148)

Manuel's picture

28-10-2014, 13:34

What is the value for the 'accuracy' setting?

By Meits

Scribe (6446)

Meits's picture

28-10-2014, 13:41

Haven't checked the latest yet, but on my openMSX install interlaced photos look very ugly... The flicker is irregular...
Download this slideshow DSK and check if it's alright...

By Grauw

Ascended (10062)

Grauw's picture

28-10-2014, 14:09

The upcoming openMSX release does have an important Y8910 fix in the envelope generator though, quite a lot of music (esp. Impact music disks) sounds off without it.

(Specifically, envelopes used to be retriggered while they should be free-running.)

By Manuel

Ascended (18148)

Manuel's picture

28-10-2014, 14:31

Meits: try to set the deinterlace option to 'on'. That helps.

Grauw: you mean Y8950 (MSX-AUDIO). Not to be confused with AY8910 (PSG).

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