-Oorspronkelijk bericht-
Van: Jan-Lieuwe Koopmans <[EMAIL PROTECTED]>
Aan: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Datum: dinsdag 23 juni 1998 8:15
Onderwerp: Re: Color Burst (was: A question about the PSG & samples)
:Yeah, for example the V9938's color burst registe
Alex Wulms wrote:
|Are there any more undocumented features in the PSG, the MSX1 VDP and
any
|other chips used in the MSX which all programmers and other MSX fans
should
|be aware of?
Yeah, for example the V9938's color burst registers... Some people say
they are useless and some say they use it
] But this does not apply to the square wave generators. When you
] write a 0 to registers 0 and 1, what's happening is that you TURN OFF THE
] OSCILLATORS. Since the PSG uses active low logic, the signal on the output
] is set to "1" and don't change with time.
Cool! After having been an MS
On Tue, 23 Jun 1998 17:45:21 +0200, Erik Maas wrote:
>Here are some idea's about the color burst :
>
>As far as I know you can adjust the color burst phase with it.
>(Carrier that is send for a small time during horizontal sync to be able to
>demodulate the color information)
>If you have a RGB c
--- I replied to a message in the newsgroup, but I'll post it here too. ---
jrh heeft geschreven in bericht <6min86$h77$[EMAIL PROTECTED]>...
:You don't need any noise emulation, in fact on a real MSX both tone and
:noise generators
:are shut down when speach (or other digital sound) is generated
Jan-Lieuwe Koopmans schreef:
> Alex Wulms wrote:
>
> |Are there any more undocumented features in the PSG, the MSX1 VDP and
> any
> |other chips used in the MSX which all programmers and other MSX fans
> should
> |be aware of?
>
> Yeah, for example the V9938's color burst registers... Some peop
onday, June 22, 1998 11:28 AM
To: MSX mailinglist
Subject: A question about the PSG & samples
--- I replied to a message in the newsgroup, but I'll post it here too. ---
jrh heeft geschreven in bericht <6min86$h77$[EMAIL PROTECTED]>...
:You don't need any noise emulati
On Mon, 22 Jun 1998, Alex Wulms wrote:
> Are there any more undocumented features in the PSG, the MSX1 VDP and any
> other chips used in the MSX which all programmers and other MSX fans should
> be aware of?
>
Sean Young's page (www.msxnet.org) has a description of a
undocumented MSX1
On Mon, 22 Jun 1998, Laurens Holst wrote:
> === How to replay samples via the PSG??? ===
>
You have to use an undocumented feature of the PSG. When you
select a period of 0 in the register 6, the noise produced is just like
the noise when you select 1 in this same register.
Bu
Erik Maas wrote:
> The MSX-Audio is not only capeable to play 4-bit ad-pcm automaticly, but this can be
> done for 8 bit pcm is too. Not many people have used this feature, takes two times
> more memory for the same time and samplerate. (PCM is better than ADPCM)
How?
I studied Y8950 data shee
Kari Lammassaari wrote:
> >> The MSX-Audio is not only capeable to play 4-bit ad-pcm automaticly, but
> this can be done for 8 bit pcm is too. Not many people have used this
> feature, takes two >>times more memory for the same time and samplerate.
> (PCM is better than ADPCM)
> >
> >How?
> >I st
probably not very
usefull. (Software that is monitor/TV dependant Who want's that?)
Greetings from Erik Maas
--
From: Laurens Holst
Sent: Tuesday, June 23, 1998 4:18 PM
To: [EMAIL PROTECTED]
Subject: Re: Color Burst (was: A question about the PSG & samples)
--
>> The MSX-Audio is not only capeable to play 4-bit ad-pcm automaticly, but
this can be done for 8 bit pcm is too. Not many people have used this
feature, takes two >>times more memory for the same time and samplerate.
(PCM is better than ADPCM)
>
>How?
>I studied Y8950 data sheet but don't rememb
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