At 07:08 PM 1/12/2010, Karen Lewellen wrote: >Hi, >I use English, Canadian, and wish to turn up the internal speaker volume. >I have seen enough to suggest that there here was some command for this. >With some DOS screen readers, that speaker is used for >indications. With some laptops, it can even be used for the speech >output itself. >Karen
Seriously Karen, there is no such general DOS tool/command, and I am using DOS since the PC-DOS 1.10/MS-DOS 1.25 days. As far as plain DOS is concerned, there are exactly two volume settings, "off" and "on", as it is only "programmable" through manipulating bit 1 of I/O port 61H. The only thing that can be adjusted (crudely) is the frequency by using I/O ports of the Intel 8253 PIT at 42h-43h. In case of a system with a "piezo" based "squeaker", you are even severely limited for that. There might be make/model specific functionality for manipulating the volume by manipulating the voltage applied to the speaker, but that is nothing that DOS in general knows squat about and usually is a hardware (BIOS) function only... Ralf ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
