VOGONS


IBM PS/1 Audio Card.

Topic actions

Reply 80 of 87, by Great Hierophant

User metadata
Rank l33t
Rank
l33t
matze79 wrote:
Is there any Documentation how the DAC works ? :) […]
Show full quote

Is there any Documentation how the DAC works ? 😀

Ahh i see..

These two activate the IBM PS/1 Audio Card. It is always situated at ports 0200, 0202-0204, so there's no need for a "base" value. 

is it dma driven ? or more like a covox device ?

It's an in-between, think of it like a more capable Disney Sound Source. it uses a 2K FIFO buffer for the DAC and can send an interrupt when the buffer is almost empty. The rate in which the FIFO is sent to the DAC is controlled by an 8-bit timer. The Options from the Technical Reference will tell you how it works : ftp://ftp.mindcandydvd.com/pub/drivers/IBM/PS … 2011/index.html

http://nerdlypleasures.blogspot.com/ - Nerdly Pleasures - My Retro Gaming, Computing & Tech Blog

Reply 81 of 87, by DaveJustDave

User metadata
Rank Member
Rank
Member

Does anyone have the sierra patch utility for this card to enable support on SCI games? I would love a copy

I have no clue what I'm doing! If you want to watch me fumble through all my retro projects, you can watch here: https://www.youtube.com/user/MrDavejustdave

Reply 82 of 87, by Cloudschatze

User metadata
Rank Oldbie
Rank
Oldbie
DaveJustDave wrote:

Does anyone have the sierra patch utility for this card to enable support on SCI games? I would love a copy

ftp://ftp.oldskool.org/pub/IBM_PC_BBS/ps1/instdrv.exe

Reply 83 of 87, by matze79

User metadata
Rank l33t
Rank
l33t

I have a PS/1 with PS/1 Audio Card now and test some Stuff.

Is there anyway to access MIDI Devices from DOS ?
i only get it working on Windows 3.x.

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer

Reply 84 of 87, by Great Hierophant

User metadata
Rank l33t
Rank
l33t
matze79 wrote:

I have a PS/1 with PS/1 Audio Card now and test some Stuff.

Is there anyway to access MIDI Devices from DOS ?
i only get it working on Windows 3.x.

Are you trying to play a SMF via the PSG on the PS/1 Audio Card or are you trying to access the MIDI ports to send SMF data to a MIDI module? The former requires a driver to translate MIDI commands to the PSG, the latter is unlikely to work unless the program supports PS/1 MIDI, which is not MPU-401 compatible.

http://nerdlypleasures.blogspot.com/ - Nerdly Pleasures - My Retro Gaming, Computing & Tech Blog

Reply 85 of 87, by matze79

User metadata
Rank l33t
Rank
l33t

I`m trying to get a General MIDI Module to work, but PSG MIDI is also intressenting 😀

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer

Reply 86 of 87, by Myloch

User metadata
Rank Member
Rank
Member
Myloch wrote:

if someone can test a dos game with real ps1 card hardware, please contact me privately.

Here is a video explaining the bug I previously found in kq5 it-fr-ge-sp floppy releases (000.000.148/9 or similar).
When dealing with dosbox-x ps1 emulation, this happens when getting objects: fuckin ugly garbled sound, see the video here. Game bug or ps1 emulation flaw? This is why a check with real hardware is essential.

Matze79 kindly tested this game on real hardware and it seems to work correctly, maybe something is wrong with emulation accuracy.

"Gamer & collector for passion, I firmly believe in the preservation and the diffusion of old/rare software, against all personal egoisms"

Reply 87 of 87, by matze79

User metadata
Rank l33t
Rank
l33t

Yeah it works on Real Hardware, but kq5 is hard to play on a 10Mhz 286.
I can make a small video when i have some time.

Also got Windows 3.x up with Sound.
But still did not get MIDI working with the Breakout Box.

https://dosreloaded.de - The German Retro DOS PC Community
https://www.retroianer.de - under constructing since ever

Co2 - for a endless Summer