A Powerhouse - Packed with Performance!

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Product Description

This powerhouse is our most popular multiport serial board. We call it the Intelligent UART board! It has many applications including Bulletin Board Systems, Point-of-sale Terminals, Data Acquistion, Machine Control and other applications requiring high speed multiport communications.This board was designed for maximum flexibility and compatibility. In today's fast-paced world of the Internet, BlackBoard-8 is perfect for Internet Service Providers.

Included on the BlackBoard-8 is the Guardian Watchdog Circuit which constantly monitors the status of the BBS system. In the event of a "lock-up", the Guardian performs a hardware reset on the computer. This feature keeps BBS "down-time" to a minimum.


  • 8 ports with 16C654 Intelligent UARTS
  • Flexible base addressing modes; 6 vertical and 2 horizontal
  • Flexible IRQ selections
  • Incredible data throughput at 460.8 Kbps! Meets the standards for ISDN modems
  • Sysop's - BlackBoard-8 has been proven compatible with all popular BBS packages.
  • Guardian Watchdog circuit maintains system integrity; performs hardware reset when system crashes or locks up.
  • Operating System Compatibility
    • Windows 95, Windows NT, FreeBSD, BSDI, LINUX, OS/2 (using SIO), DOS
    • BlackBoard-8 and LINUX are an excellent combination for an Internet Service Provider!


Technical Specifications

BlackBoard-8A Intelligent UART Serial Board

Dimensions 4.25" x 6.75"
Bus TypeISA
Card Slot16-bit
Card Style -size
I/O Addressing Modes8; 2 horizontal and 6 vertical modes
IRQ 's Supported9; IRQ 's 2,3,4,5,7,10,11,12,15
Data CablesB8TM Telekit: 6 foot RJ45 to DB-25M (standard)
Interface StandardStandard: EIA-232 (RS-232C)
Optional: RS-422 or RS-485
Number of I/O Ports 8
Data FormatAsynchronous, start + data + stop bits.
Data Rates110 bps to 460,800 bps (software selectable)
I/O Connector Configuration DTE (Data Terminal Equipment)
Processor TypeIntelligent UART
UART Part Number16C654 (proprietary to component mfgr.)
FIFO Depth64 bytes transmit, 64 bytes receive
HandshakeDriven by PC's processor or Auto-Handshake by UART.
Device Driver Support WindowsNT, Windows95, FreeBSD, BSDI, Linux, DOS, OS/2 (SIO)
EnvironmentalOperating Temperature: 0-70 degrees Celsius
Operating Humidity: 0-95% relative humidity (non-condensing)
Power Requirements Powered through ISA bus: 5 VDC, 12 VDC, -12 VDC @ 5 Watts
Modem CompatibilityCompatible with all RS-232 type modems including ISDN