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Big Baud Rates! Little Board!

BlackBoard-4 Image
BlackBoard-4
Technical Stuff
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Product Description

Do you run a BBS for profit? It's no fun (and no profit) when you check your system to find that it's been locked up for the past 8 hours. BlackBoard-4 and Guardian Watchdog keep you up and running - making money. Also available, the BlackBoard-4L, without the Guardian Watchdog. Either way, you can't beat the features of the BlackBoard-4: The only 4 port asynchronous serial card with the capability to send and receive data at a blazing 460.8 Kbps, making it the board of choice for the new generation of modems and beyond.

BlackBoard-4 Features:

  • 4 ports with 16C550 UARTS with 16 bytes xmit/rcv FIFO
  • As many as 36 ports per PC are possible
  • BBS Guardian Watchdog circuit resets the computer if the system locks up. (The BlackBoard-4L comes without the Guardian Watchdog)
  • Data rates up to 460.8 Kbps
  • Flexible addressing and interrupt structure
  • 10 Conductor FULL modem handshaking support
  • Works with all popular BBS software: PCBoard, Wildcat, Worldgroup, MBBS, Searchlight, MindWire, Excalibur and more!
  • FCC Part 15 compliant
  • Operating System Compatibility
    • Windows 95, Windows NT, FreeBSD, BSDI, LINUX, OS/2 (using SIO) & DOS

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Technical Specifications

BlackBoard-4 Non-Intelligent Multiport Serial Board

Dimensions 4.25" x 6.25"
Bus TypeISA
Card Slot16-bit
Card Style½ -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
ConnectorsRJ-45
Data CablesB4TM Telekit: 4-6 foot RJ45 to DB-25M (standard)
Interface StandardStandard: EIA-232 (RS-232C)
Optional: RS-422 or RS-485
Number of I/O Ports 4
Data FormatAsynchronous, start + data + stop bits.
Data Rates110 bps to 460,800 bps
I/O Connector Configuration DTE (Data Terminal Equipment)
Processor TypeUniversal Asynchronous Receiver Transmitter
UART Part Number16C550 (proprietary to component mfgr.)
FIFO Depth16 bytes transmit, 16 bytes receive
HandshakeFull Modem Handshake Support
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

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