Re: DOS-based software, running in Virtual PC (Windows XP) 7.0 for Mac, can't find Mac modem

From: H.Tomaru (nospam_at_nospam.com)
Date: 02/16/05 

Date: Thu, 17 Feb 2005 02:01:39 +0900

tim.mcgaw@ualberta.ca wrote:
> When operating when installed on my old Thinkpad.... this DOS software
> was not really trying to "communicate with the internet". Instead, it
> was using the dial-up modem on the Thinkpad to connect by long distance

In theory, your DOS program should be able to access serial port on the
Virtual Machine if you connect the Mac internal modem to the appropriate
COM port in the Virtual Machine Settings. It may access the hardware
registers directly. And whether the WinXP allows DOS programs to
directly access hardware registers is another problem. Whether your Mac
internal modem is compatible with VPC7 is also unknown.

In my experience , I could use a DOS program to record Closed Caption in
DOS6 on VPC6. It reads CC characters from serial port (Keyspan
Serial-USB Adapter) connected to a Closed Caption decoder. It was not
perfect: it sometimes failed to catch some characters... So I made a
simple recorder on OSX.

If DOS6 runs in VPC7, you can try your DOS program in the operating
system on which it was originally supposed to run. You may want
now-defunct VPC additions for DOS system, which enables you to share
folders with OSX.

You can also try other PC emulators such as Qemu.

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