110889 BS-207 Handler for RT-11 and TSX-PLUS Version: January 1987 Submitted by: Dataram Corp, Princeton, NJ Operating System: RT-11 V5.01, TSX-PLUS V6.01 Source Language: MACRO-11 Hardware Required: BS-207 Keywords: Device Handlers, TSX Abstract: BS is a device handler that can be installed under RT-11 or TSX-PLUS operating systems. It makes the Data-Ram Corporation Bulk Storage Memory System appear to be a high-speed disk. The Macro Assembler code supplied has been tested under RT-11 version 5.01 and TSX-PLUS version 6.01. It should also work with previous releases of RT-11 back to version 4, and previous releases of TSX-PLUS back to version 3. The handler as supplied supports eight megabytes of BS memory. To support more or less, the SIZE parameter must be changed, and the handler re-assembled and re-linked. Driver Specifications: . RT-11 DEVICE ID number: 174(8) . CSR base address: 177460 . Vector address: 204 . Handler size (approx): 120(10) words . RT-11 Features supported: -System Device Support -Memory Management . Requires EIS hardware . Hardware bootstrap This handler supports use as a system device. In many cases, significant performance improvement will occur by loading operating system software onto the BS device, making it bootable, then booting it. The RT-11 "device identification number" is set to 174 to allow application programs to identify this device. Notes: This handler does not zero-fill short blocks (less than 512 bytes) written to it. Thus the contents of the "non-written" portion of the block is unpredictable when it is read as a whole block. In practice, this does not appear to be a problem with the operating system, nor application programs. It does, however, cause problems with some editors , e.g., KED, which write a short block at the end of the edited file upon exiting. Media (Service Charge Code): One RX02 Diskette (LA) Format: RT-11, 600' Magnetic Tape (MA) Format: RT-11