User's guide to the intelligent serial line card (ISL-11) for LSI-11 systems (Engineering Materials)

Miscellaneous · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5905458

The ISL-11 (Intelligent Serial Line) card is a quad height LSI-11 module with an on-board Intel 8039 microprocessor which supplies intelligence between a differential (RS-422) serial line and a DMA interface to the LSI-11. It is compatible with LSI-11's, LSI-11/2's, and LSI-11/23's. The fact that there is a microprocessor on-board allows the use of this module for many different applications. One application will involve networking of minicomputers using the in-house SCULL protocol. The entire SCULL protocol can be handled by the ISL-11 thus taking a significant load off the LSI-11 and simplifying the software interface to the link. The serial line is asynchronous and can be driven up to 38.4K band if the microcode can handle such speeds. A block diagram of the ISL-11 is shown on the next page.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5905458
• Report Number(s): CAPE-2848; ON: DE83014866
• Country of Publication: United States
• Language: English

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