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First post, by wolf

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How do you controll what speed CD-ROM drive you want under mounted in DOSBox?
I have a game that tells me I have a single speed CD-ROM drive thus it will turn off cutscene audio off 😵

I tried both folder mount (-t cdrom)
and also (imgmount -t iso)
I get same thing for both.

Reply 2 of 17, by MiniMax

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You can't control it directly from DOSBox. I guess it mostly depends on how the game tries to measure the speed. What core, and how many cycles, do you use when the speed detection is running?

DOSBox 60 seconds guide | How to ask questions
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Reply 3 of 17, by wolf

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I tried it with Cycles at "Auto" and "80000" and Core=auto, but nothing helps.
80k seems perfect for cycles, less click sounds in the audio.

Qbix: The Game I am trying to fix is "Fade to Black", so in my bat file, do this?

imgmount d D:\Emulation\Microsoft\DOS\Games\D\f2b.iso -t iso
cycles=80000
cd f2b
f2b.bat -2

Reply 5 of 17, by wolf

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I will try that... but what exactly does adding -2 do?
Was I right with the bat file above?

"f2b.bat -2"

Also, setting the cycles=max did the same thing as auto... it slightly stuttered. cycles=80000 runs the game perfectly smooth and reduces the audio clicks.

Reply 8 of 17, by wolf

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OK I ran into a snag.
Lookinf at the F2B.bat, I can't identify the EXE file. So at the moment I wouldn't know where to use the "-2" line.
Here is the contents of the f2b.bat that is used to run the game:

--------------------------------------------------------
@echo off
rem
rem Run Game without virtual memory. It will run faster than with it.
rem
set oldgvm=%DOS4GVM%
set old16m=%DOS16M%
set DOS4GVM=
set DOS16M=
echo Running the game Fade To Black ...
delphine -b512 %1 %2 %3 %4 %5 %6 %7 %8
set DOS4GVM=%oldgvm%
set oldgvm=
set DOS16M=%old16m%
set old16m=
-------------------------------------------------------

Reply 12 of 17, by Freddo

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wolf wrote:

I will try that... but what exactly does adding -2 do?

From the Fade to Black read.me file;

To speed a movie sequence, if you have a triple- or quad-speed CD-ROM with a slow PC, add -2 as a parameter on your command line. This forces the game to consider your CD-ROM drive as being double-speed only.

But it works the other way too, if the game thinks you have a single-speed CD-ROM and force it to double-speed.

Reply 13 of 17, by MiniMax

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There Freddo goes again and cheats by actually reading a Read.Me file 😀 What is the world coming to!!

DOSBox 60 seconds guide | How to ask questions
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Reply 15 of 17, by MiniMax

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Blindly deleting stuff is not my preferred way of solving problems. I would try again, with the original BAT-file and

f2b.bat -2

DOSBox 60 seconds guide | How to ask questions
_________________
Lenovo M58p | Core 2 Quad Q8400 @ 2.66 GHz | Radeon R7 240 | LG HL-DT-ST DVDRAM GH40N | Fedora 32