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RTC (Real-Time Clock) Programs for
Various IBM PC Family Expansion Cards



A related diagram is at here.



??? Unknown maker


Card TK-200
RTC software TEKCLOCK.ZIP     (source: Chuck(G) at the VCFF)
"        "      • "TK-200" appears in TKFLOPPY.BAT
• TEKCLOCK.BAT is used to set DOS' date/time into the card.
• Found on a 180K floppy, suggesting that the TK-200 card is early PC.


Card ??????
RTC software IMPCLOCK.zip
"        "      Displays "CLOCK V2.1A IMPERIAL INT'L CO. NOV 1985"


Card ??????
RTC software RTC.EXE
"        "      Looking for _8167 class chip, 16 I/O ports, at base port of either 2C0 or 2A0 or 280     (info source: Maelgrum at the VCFF)



AST

For AST cards.

ASTCLOCK.COM and SETCLOCK.COM    (1982)  (no version found - possibly version 1.00)
ASTCLOCK.COM    (version 1.10, 1984)  (from SuperPak version 4.2)
ASTCLOCK.COM    (version 1.20, 1985)  (from SuperPak version 5.02)
ASTCLOCK.COM    (version 1.21, 1985)  (includes usage information)  (from SuperPak version 6.11, dated 1988)

AST SixPakPlus - Move to new type of clock chip       (requires ASTCLOCK.COM from SuperPak version 4.3, or later)

Y2K issue - Summary
Y2K issue - Fix by patching ASTCLOCK.COM

Technical info - I/O port usage of clock chips on AST cards



AT&T

The PC6300 computer is essentially a rebadged Olivetti M24.  See entry for Olivetti M24.



A.T.D. Inc.

Card T512CLK-A1
Photo Photo
RTC hardware ATD-20 clock module
RTC software Download     (source: natevw at the VCFF)
Comment A.T.D. INC Sunnyvale, CA



Boca Research

Card BOCA I/O-XT
RTC software CLOCKBRI.ZIP
"        "      Known to work on the Boca Research card shown at here     (RTC chip is a RTC-58321)



CC&C   (California Computer and Component, Inc.)


Card MFC-384i 8 PLUS
RTC software MFC-384i 8 PLUS - Support software.zip     (source: chris_nh at the VCFF)
Note ADJCLK.COM - Use to set the clock on both card (RTC) and DOS.
DSPCLK.COM - Show the card's clock (RTC).
SYSCLK.COM - Set DOS' clock from the card's clock (RTC).  Normally executed via AUTOEXEC.BAT
HLPCLK.COM - Shows date and time format info.



CompuAdd Corporation


Computer CompuAdd 810
RTC software CADDCLCK.ZIP     (source: vwestlife at the VCFF)
Note With this card, CompuAdd supply a device driver named CLOCK.SYS
CLOCK.SYS is put onto the hard drive and a reference is made to it in CONFIG.SYS so that it is loaded in memory each time that the computer is powered on.
With this method, everything is automatic - using the date and time commands of DOS will automatically update the date/time in the CompuAdd 810's real-time-clock.



Diamond Flower (DFI)


Card MBI-MIO
RTC software SETCLOCK.COM and GETCLOCK.COM
"        "      Looking for _8167 class chip, 32 I/O ports, at base port of either 2C0 or 340     (info source: Maelgrum at the VCFF)


Card DIO-200X
RTC hardware MM58167A chip, using I/O ports of range 2C0 - 2DF    (source: page 2-2 of user's manual)
RTC software SETCLOCK.COM and GETCLOCK.COM
"        "      Looking for _8167 class chip, 32 I/O ports, at base port of either 2C0 or 340     (info source: Maelgrum at the VCFF)
Manual User's Manual   (includes usage information for SETCLOCK.COM and GETCLOCK.COM)


Card Unknown
RTC software HXPCLOCK.COM     (source: el_VR at the VCFF)
"        "      Looking for _8167 class chip, 32 I/O ports, at base port of 2C0     (info source: Maelgrum at the VCFF)



DTK


Card HEXA I/O PLUS
RTC hardware UM82C8167 chip
Comment Post #7 at here indicates that DFI's SETCLOCK.COM and GETCLOCK.COM (see above) will work.
Comment One of the versions of TIMER.COM below, in the PC TIMER section, is expected to work.


Card PII-125
RTC hardware OKI M5832 chip
RTC software DTKCLK11.ZIP
Comments DTKCLK11.ZIP software sourced from the Simtel MS-DOS Collection.  No particular DTK card specified, however, the software was found to work for DTK's PII-125 card.  Software may also suit certain other DTK cards.



Everex


Card EV-170
Note The EV-170A and EV-170B are not the same as the EV-170.  EV-170A and EV-170B have no clock circuitry.
RTC software download
"        "      Looking for _8167 class chip, 32 I/O ports, at base port of 2C0     (info source: Maelgrum at the VCFF)



GENERIC: David_M's clock reader

Sourced from David_M at the VCFF.
A replacement for many PC and XT clock programs.

CLOCK.zip

Note:  If you have Sergey's XT-CF-Lite board, and it is configured for I/O port 300h (the default), see post #15 at here.



GENERIC: Strickland RTC Clock Programs

Sourced from the Simtel MS-DOS Collection.
A replacement for many PC and XT clock programs.

CLKPROGS.ZIP
Additional information about the software     (info source: Maelgrum at the VCFF)



Hypertec


Card Hyper-Port
Note With this card, Hypertec supply a device driver named CLOCK.SYS
CLOCK.SYS is put onto the hard drive and a reference is made to it in CONFIG.SYS so that it is loaded in memory each time that the computer is powered on.
With this method, everything is automatic - using the date and time commands of DOS will automatically update the date/time on the Hyper-Port card.
RTC software CLOCK.SYS
"        "      Technical info - I/O port usage                (info source: Maelgrum at the VCFF)



Intel


Card Above Board PS/PC
Note With this card, Intel supply a device driver named CLOCK.SYS
CLOCK.SYS is put onto the hard drive and a reference is made to it in CONFIG.SYS so that it is loaded in memory each time that the computer is powered on.
With this method, everything is automatic - using the date and time commands of DOS will automatically update the date/time on the Above Board PS/PC card.
RTC software CLOCK.SYS



Microforce


Card PLB85
RTC software Download



Microlog


Card Baby Blue II
RTC software Download         (pointer to www.diskman.com)
Comments 1. Baby Blue II is a later version of Baby Blue.
2. Usage information for CLOCK.EXE is in section 3.1 of the user's manual.



Microsync


Device dClock
Photo Photo
RTC software Download     (source: archeocomp at the VCFF)
Manual User's Manual   (includes usage information for SETDCLK.COM and READDCLK.COM)



Olivetti


Computer M24
RTC software Download     (source: Simtel MS-DOS Collection)



Orchid Technology


Card Conquest
RTC software Download     (source: db2 at the VCFF)
Comment Read CLOCK.TXT



Paradise Systems


Card 5-Pack (5PAK)
Photo Photo
RTC software Download     (source: 6885P5H at the VCFF)
Comment Type "CLSET HELP" for instructions on using CLSET.COM



[PC TIMER]

When run, these all display ** PC TIMER ** along with the version number.
Appear to be somewhat generic.
For example, version 1.0 works with a CSCA I8310 card.
For example, version 1.2 works on the Samtron 88S computer.
For example, version 1.3 works with a GW202 multifunction card.
For example, version 2.x works with an AST SixPakPlus card.
Perhaps these were supplied to card makers by a particular RTC chip maker.

TIMER.COM version 1.0
TIMER.COM version 1.2
TIMER.COM version 1.3
TIMER.COM version 2.x

Version 2.x Usage (earlier versions may be the same):

The command  TIMER /S  is put into the AUTOEXEC.BAT file. The /S will cause the TIMER program to read the date/time from the RTC card and set it into DOS's date/time.
Should the RTC's date/time become incorrect, the command  TIMER /I  is entered at the DOS prompt. The TIMER program will then ask the user to input the current date/time then it will update the date/time on the RTC card.

That information can, in some cases, be obtained by entering  TIMER /?

Additional information about the software     (info source: Maelgrum at the VCFF)



Peripherals Enterprise Company


Card GW202
RTC software Use TIMER.COM version 1.3, found above in the 'PC TIMER' section.
Manual User's Manual   (includes usage information for TIMER.COM)



Persyst


Card Time Spectrum 384
Note Not the same as the 384L
Photo Photo
RTC software CLOCK.COM for the 384 card

Usage:
CLOCK /I  sets the RTC clock
CLOCK /S  puts the RTC clock into the DOS clock
"        "      Technical info - I/O port usage                (info source: Maelgrum at the VCFF)
H/W config. Jumper/switch settings


Card Time Spectrum 384L
Note Not the same as the 384
Photo Photo
RTC software CLOCK.COM for the 384L card

Usage:
CLOCK /I  sets the RTC clock
CLOCK /S  puts the RTC clock into the DOS clock
H/W config. Jumper/switch settings



Quadram

QuadMaster (1983) (usage information included)  
QuadMaster II software (version 1.02, 1984)  (usage information included)  
QuadMaster III software (version 2.01, 1985)  (usage information included)  
QuadMaster III software (version 3.04, 1985)  (usage information included)  (manual is here) (software source: Malc at the VCFF)
QuadMaster III software (version 3.08, 1986)  (usage information included)  (photo) (software source: Rolf at the VCFF)



Samsung/Samtron


Computer Samtron 88S
Note The Samtron 88S is an XT clone that was made by Samsung.
An RTC is built into the motherboard.
RTC software TIMER.COM version 1.2, found above in the 'PC TIMER' section, is known to work.



Sigma Designs Inc.


Card Maximizer
RTC software STIME and XTIME programs                (usage described in the USAGE.TXT file within the ZIP file)



Tecmar


Card Tecmar Captain
RTC chip A 58167 chip that sits at the base I/O port of either 37D or 27D     (source: user's manual)
RTC software TECMAR_CLOCK_UTILITIES.ZIP
"        "      Technical info - I/O port usage                (info source: Maelgrum at the VCFF)
Manual Documentation   (includes usage information for RTC software)




Turner Hall Publishing


Card "The Turner Hall Card"
Photo https://github.com/erikp9000/necclock
RTC chip NEC uPD1990AC
RTC software https://github.com/erikp9000/necclock     (software authored by ebp at the VCFF)
Photo https://github.com/erikp9000/necclock



VTech


Computer Laser XT
Note Laser XT/3 is not the same as Laser XT
RTC software SETCLOCK and GETCLOCK programs
"        "      Technical info - I/O port usage                (info source: Maelgrum at the VCFF)



Yangtech Electric Co. Ltd.


Card CSCA  I8310
Photo Photo
FCC ID FHQ484AC-X1031     (FHQ = Yangtech Electric Co. Ltd.)
RTC hardware - A UM82C8167 chip     (source: what is fitted to the card)
- Chip sits at the base I/O port of either 240 hex or 340 hex as configured by the card's switches 1 and 2     (source: user's manual)
RTC software The user's manual quotes RTC.EXE, but I do not have an RTC.EXE for the base I/O port of either 240 hex or 340 hex.
However, what also works (as proven by me) is TIMER.COM version 1.0, found above in the 'PC TIMER' section.
Manual User's Manual