+PCM soundboard for Pleasure Hearts

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By Takamichi

Champion (264)

Takamichi's picture

23-07-2019, 12:15

"PH plusPCM Forced Entrance.dsk", how did you make it? Can I make one by altering a few sectors?
It might be a good idea to use Music Module as a substitute for +PCM. Bad thing is I don't have the "technical file" for +PCM : Sad
If the PCM data format of +PCM is same with H8. then the PCM data is compressed as described here.
H8COMP.COM mentioned in the site can be downloaded here. H8CEXT.COM that decompresses the compressed file is also included in the H8COMP.LZH archive. .RAS source files are available for the both.

By Takamichi

Champion (264)

Takamichi's picture

23-07-2019, 15:11

Additional notes; there must be at least two PCM sounds longer than the rest. They are (1) a woman's voice, "yurushimasenwa!" (I won't forgive you!) after when you ignore the life item thrown by the boss in stage 6 (2) a man's voice, "suimasen koroshimasu" (sorry I kill you) heard when the silver boss in stage 5 decides to fight after the angel-like boss is killed.

By alexito

Hero (555)

alexito's picture

23-07-2019, 15:55

@Takamichi wrote:If the PCM data format of +PCM is same with H8. then the PCM data is compressed as described here.

Well, I'm fraid the compress format used for Mr.Hiramatsu (H8 Computer) is not the same used for team FrontLine on SX18AC MicroController.

and thanks for translate the voices from Japanese to English is very kind of your part. still I need to hear the various SFX samples from +PCM device so I can find similar samples to replace the originals.

By Takamichi

Champion (264)

Takamichi's picture

23-07-2019, 16:46

That's a pity, I was going to inform that there is another H8 compatible game Ah! Sokai 2+ which is ahsou2p.lzh downloadable here together with the source a2psrc.lzh. edit: I remembered Hiramatsu informing me the quality of +PCM's PCM is worse than turboR's.

By Manuel

Ascended (15821)

Manuel's picture

23-07-2019, 18:19

If it becomes clear how this thing works from software point of view, I am willing to try to emulate it in openMSX.

By alexito

Hero (555)

alexito's picture

23-07-2019, 18:35

I can confirm the game (ahsou2p) from Mr.Hiramatsu use H8 Cartridge mainly for play PCM Samples you can hear the samples if you rename A2PH8ACE.H8C --> A2PH8ACE.RAW and drag the .RAW file onto GOLDWAVE (PCM 8bit Mono Unsigned Rate at 7333hz) in +PCM the Format is a compress ADPCM but Logarithm lookup table and decompress system is located inside of SX18AC.

P.S: is shame no videos about H8 Cartridge running any software.

By Takamichi

Champion (264)

Takamichi's picture

24-07-2019, 05:44

Theoretically if you build a H8 system then run ahsou2p on it you can see it.
Note Hiramatsu was designing/building +PCMs himself so in that sense he = Frontline crew.
Is is possible to "suck out" the contents of the SX18AC?

By alexito

Hero (555)

alexito's picture

24-07-2019, 11:46

@Takamichi wrote:Is is possible to "suck out" the contents of the SX18AC?

you need the following hardware:
http://www.ic0nstrux.com/SX-tech-board#.XTgnTmcdxNA
https://www.parallax.com/product/45214

and Parallax Software called SX-Key Editor it is free from Parallax homepage.

By alexito

Hero (555)

alexito's picture

24-07-2019, 12:04

Well, after checking all the pages from Mr. Hiramatsu I can confirm the SX18AC Micro Controller is not mention in any area. so that make think FrontLine Team had a different approach using a Micro Controller instead a whole RISC CPU.
FrontLine team choice the name +PCM that name make people confuse because PCM and ADPCM data strings are different.

By Takamichi

Champion (264)

Takamichi's picture

24-07-2019, 13:13

I asked this site for availability of the SX Tech Tool Kit. Whatever, it looks we can't reproduce/emulate +PCM without analyzing the SX18AC chip on it...

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