[comp.sys.ibm.pc.hardware] AT&T PC 6300 Clock/Calander?

gooey@helix.nih.gov (Sean Graham) (11/27/90)

	A friend has an AT&T PC6300 with no Clock/Calendar in it.
He'd like to add one but is afraid of incompatibilities between the
AT&T Bus and generic cards.  If anyone knows of a card that will work
with the AT&T I'd appreciate it if you'd let me know the manufacturer.

Thanks...

Sean

--
|| Sean N. Graham                                     BIX: sean.graham      ||
|| National Institutes of Health                      gooey@helix.nih.gov   ||
||  "This is a test of the Emergency Broadcasting System.  This is just a   ||
||  test.  In the event of a real emergency you would most likely be dead." ||  

wkb@cbnews.att.com (Wm. Keith Brummett) (11/28/90)

    In article <667@nih-csl.nih.gov>, gooey@helix.nih.gov (Sean Graham)
    writes:
    > 
    > 	A friend has an AT&T PC6300 with no Clock/Calendar in it.
    > He'd like to add one but is afraid of incompatibilities between the
    > AT&T Bus and generic cards.  If anyone knows of a card that will work
    > with the AT&T I'd appreciate it if you'd let me know the manufacturer.

    Sean,

    To the best of my knowledge, all AT&T PC6300's have a clock/calendar on
    the motherboard.  Perhaps your friend's machine needs a new battery?
    (Is the machine an old "standard" PC6300, or a newer 6300 WGS?  I don't
    think it matters, but I'm not as familiar with the newer WGS series.)

    -- Keith

-- 
    | W. Keith Brummett          (614) 860-3187          AT&T, Room 3B-202 |
    | att!cblph!wkb                                    6200 East Broad St. |
    | or, wkb@cblph.ATT.COM                        Columbus, OH 43213-1550 |
    `----------------------------------------------------------------------'

zech@leadsv.UUCP (Bill Zech) (11/29/90)

In article <1990Nov28.025350.1018@cbnews.att.com> wkb@cbnews.att.com (Wm. Keith Brummett) writes:
>
>    In article <667@nih-csl.nih.gov>, gooey@helix.nih.gov (Sean Graham)
>    writes:
>    > 
>    > 	A friend has an AT&T PC6300 with no Clock/Calendar in it.
>    > He'd like to add one but is afraid of incompatibilities between the
>    > AT&T Bus and generic cards.  If anyone knows of a card that will work
>    > with the AT&T I'd appreciate it if you'd let me know the manufacturer.
>
>    Sean,
>
>    To the best of my knowledge, all AT&T PC6300's have a clock/calendar on
>    the motherboard.  Perhaps your friend's machine needs a new battery?
>    (Is the machine an old "standard" PC6300, or a newer 6300 WGS?  I don't
>    think it matters, but I'm not as familiar with the newer WGS series.)
>
>    -- Keith
>

True, all PC6300's (8086 machines) had a built-in clock/calendar chip.
It is powered by a NiCad battery soldered into the system board.  
Eventually the battery loses its ability to hold a charge and the
clock won't keep accurate time.

Also note that unless you are running AT&T MS-DOS, as opposed to
IBM or stock Msoft, the system will not be aware of your clock.
You can write a program to set the clock chip, and to read it
at boot time and set the system clock from it.

I have a program to read the chip and set the system time if 
you need it.

- Bill Zech
CIS: 73547.1034@compuserve.com

JXS118@psuvm.psu.edu (Jeff Siegel) (11/29/90)

In article <1990Nov28.025350.1018@cbnews.att.com>, wkb@cbnews.att.com (Wm. Keith
Brummett) says:
>
>    In article <667@nih-csl.nih.gov>, gooey@helix.nih.gov (Sean Graham)
>    writes:
>    >
>    >   A friend has an AT&T PC6300 with no Clock/Calendar in it.
>    > He'd like to add one ...

>    Sean,
>
>    To the best of my knowledge, all AT&T PC6300's have a clock/calendar on
>    the motherboard.  Perhaps your friend's machine needs a new battery?

All the original PC6300's and the 6300 Plus have built in clock/calendars.
The clock/calendar only works right, however, if you are using the ATT version
of MS-DOS designed specifically for that machine. Generic MS-DOS versions
don't know how to read/set the clock chip.

Jeff