Operation Wolf Ocean 1988 FX PCEFAN 256KB RAM REQUIRED

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By alexito

Hero (534)

alexito's picture

11-03-2019, 23:42

Thanks Grauw for your explanation that make me re-think about the use of the PSG as other PCM output device but will be great if the great Manuel VIK give us more details about how it really work.

come on people let's start to pray for a miracle.

;P

By NYYRIKKI

Enlighted (5356)

NYYRIKKI's picture

12-03-2019, 00:36

Unfortunately the kind of miracles you are after are out of stock right now... BUT if you are willing to sacrifice enough CPU speed (= minimum all of it) and RAM (minimum 1.5 x of normal PCM) then yeah... PSG can indeed do miracles... Listen here:

http://ragozini.googlepages.com/LARGE16.ROM

By alexito

Hero (534)

alexito's picture

12-03-2019, 01:21

That is what I was looking for.

Running Naked in a Field of Flowers

Now how it works somebody can provide asm routine and the tools needed.

By ARTRAG

Enlighted (6234)

ARTRAG's picture

12-03-2019, 07:54

If you want to use the psg only, my options are:
Viterbi encoder <=> best quality but full CPU used, animations have to be interleaved computing cycles
Voice encoder <=> very low quality, suitable for speech, but the CPU is almost free

The Scc option can open a wide range of possibilities:
PCM encoder <=> low PCM audio at low bandwidth, isr code, CPU almost free
Voice encoder <=> average quality, best for speech, isr code, CPU almost free

By NYYRIKKI

Enlighted (5356)

NYYRIKKI's picture

12-03-2019, 08:13

alexito wrote:

That is what I was looking for.

Running Naked in a Field of Flowers

Now how it works somebody can provide asm routine and the tools needed.

All in one package: https://www.msx.org/news/development/en/pcm-encoder-001

By alexito

Hero (534)

alexito's picture

12-03-2019, 12:01

Thanks ARTRAG & NYYRIKKI...... now STUDYING will see what happen...ZZzzz..

Nishi

By alexito

Hero (534)

alexito's picture

12-03-2019, 21:16

What do you think about this picture (Half-Multicolor Flicker 9918A mode) on MSX:

OPWE INTRO WIP190312

This is my ranking:

1rd Place for BlueMSX (Not Flicker at all)
2nd Place for REAL MSX COMPUTER (My eyes can manage well the Flicker)
3rd Place for OpenMSX (The Flicker look odd to me)

By Ivan

Ascended (9112)

Ivan's picture

12-03-2019, 22:33

Nice! Tried it on openMSX. But keep in mind that the arcade has four intro pictures (actually animations):

https://www.youtube.com/watch?v=Ujgy2ziBF8w

By Manuel

Ascended (15680)

Manuel's picture

12-03-2019, 23:01

alexito wrote:

This is my ranking:

1rd Place for BlueMSX (Not Flicker at all)
2nd Place for REAL MSX COMPUTER (My eyes can manage well the Flicker)
3rd Place for OpenMSX (The Flicker look odd to me)

If you don't like the flickering, use this command: set deflicker on
The flicker is intended to look similar to the MSX, but due to slight timing variations it may look irregular. (That's probably what you all "odd"). On a dedicated system it should be very steady, but not on an OS which runs also many other processes.

By alexito

Hero (534)

alexito's picture

12-03-2019, 23:18

Thanks, Manuel.

That command help a lot.

.......so my new Ranking:

1rd Place for OpenMSX ( SET DEFLICKER ON --> make flickering Images look great)
2nd Place for BlueMSX (Not Flicker at all)
3nd Place for REAL MSX COMPUTER (My eyes can manage well the Flicker)

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