Old PC (XT, 286,386) PC Speaker PCM emulation

Discussion of development and patch submission.
Post Reply
Doronetty
Posts: 4
Joined: Mon 22 Oct, 2018 11:56 am

Old PC (XT, 286,386) PC Speaker PCM emulation

Post by Doronetty » Wed 24 Oct, 2018 4:26 pm

Hello! Recently I tested PCem with various configurations and found that PC Speaker of the old PC clones (XT,AT 286 and 386) are emulated not full. I'm talking about playing PCM sounds in Mushroom format (this is playing digital recording through PC Speaker). For example you can test this game [Moderator : please do not post links to copyrighted material] - In the title screen must playing a Shalyapin's song "Dubinushka". But PCem did't playing nothing :(
Be true the most PC emulators can't do that too except this XT emulator http://spc-emu.uphero.com/PCXT/SPCXT_v095.zip
If it's possible please solve this problem!

With best regards,
D. Doronetty
Last edited by Doronetty on Wed 14 Nov, 2018 8:56 am, edited 2 times in total.

User avatar
leilei
Posts: 599
Joined: Fri 25 Apr, 2014 4:47 pm

Re: Old PC (XT, 286) emulation

Post by leilei » Thu 25 Oct, 2018 12:19 am

A more legal PCem-not-playing-PC-Speaker-sounds example could be Kentris. There's nothing heard in PC speaker no matter what playback speed

Doronetty
Posts: 4
Joined: Mon 22 Oct, 2018 11:56 am

Re: Old PC (XT, 286) emulation

Post by Doronetty » Thu 25 Oct, 2018 12:46 pm

Well, if the game of 1990 could be copyrighted (hey 28!!!!!!! years passed, and the company who made is gone long time ago, even there's no more country there this game was made), another link to demo, which give a name to all PC speaker music format - Magic Mushroom (1988)
[Moderator : That include links to _sites_ with copyrighted material]

User avatar
SarahWalker
Site Admin
Posts: 1588
Joined: Thu 24 Apr, 2014 4:18 pm

Re: Old PC (XT, 286) emulation

Post by SarahWalker » Thu 25 Oct, 2018 4:11 pm

Please don't post links to what are basically warez sites. I can't believe I have to keep saying this!

User avatar
omarsis81
Posts: 636
Joined: Thu 17 Dec, 2015 6:20 pm

Re: Old PC (XT, 286) emulation

Post by omarsis81 » Thu 25 Oct, 2018 8:24 pm

SarahWalker wrote:
Thu 25 Oct, 2018 4:11 pm
Please don't post links to what are basically warez sites. I can't believe I have to keep saying this!
He is new to the forum, bear with him haha

I noticed there is no rules pinned in the forum, maybe you should make a locked topic with the few rules

1) Don't put link to Copyrighted software
2) Don't request features
3) Don't ask dates for the next release

Hey, I could be an admin lol

User avatar
SarahWalker
Site Admin
Posts: 1588
Joined: Thu 24 Apr, 2014 4:18 pm

Re: Old PC (XT, 286) emulation

Post by SarahWalker » Fri 26 Oct, 2018 9:51 am

I had hoped that I wouldn't have to specifically put "don't post illegal stuff" as an explicit rule, as it seems kind of self evident. Not that I think writing down basic rules would help - my experience is that no one reads any of the sticky posts anyway.

Doronetty
Posts: 4
Joined: Mon 22 Oct, 2018 11:56 am

Re: Old PC (XT, 286) emulation

Post by Doronetty » Sat 27 Oct, 2018 11:09 am

Well, I wouldn't give a links no more. I've tested PCEm one more time with old PC Speaker progs - the other Beeper programs working well (include Atom and other with digitalized samples), only Mushroom format don't work.
Today I found this video: https://www.youtube.com/watch?time_cont ... zNbGa05dfg -it's old games demonstration using PCM on PC Speaker. Author of this video says in comment that he used DOSBox emu and "I forgot which build it was, but it was one that had had work done to improve the accuracy of the PC speaker. The vanilla build doesn't sound as good or as true to the hardware."
So I'm hope it's not big problem to fix PC Speaker on PCem!!!
P.S: Perestroika/Toppler game which about a told in the first post are at 4:28

Doronetty
Posts: 4
Joined: Mon 22 Oct, 2018 11:56 am

Re: Old PC (XT, 286,386) PC Speaker PCM emulation

Post by Doronetty » Wed 14 Nov, 2018 8:59 am

I just found DOSBox version with enhanced PC Speaker emulation which playing PCM music well - it's called DOSBox ECE. Here the thread with discussion of this problem: https://www.vogons.org/viewtopic.php?f=41&t=23371

Post Reply