1. Forum
  2. Usenet
  3. COMP.SYS.IBM.PS2.HARDWARE

  • US5499378 Small computer system emulator for non-local SCSI devices

    From Louis Ohland@21:1/5 to All on Fri Jan 20 19:00:39 2023
    MAJ Tom, can SCBs be used to communicate over the SCSI bus? SOS?

    https://www.ardent-tool.com/docs/patent/US5499378.pdf

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Tomas Slavotinek@21:1/5 to Louis Ohland on Sat Jan 21 12:18:45 2023
    On 21.01.2023 2:00, Louis Ohland wrote:
    MAJ Tom, can SCBs be used to communicate over the SCSI bus? SOS?

    https://www.ardent-tool.com/docs/patent/US5499378.pdf

    Yes, that's what it's used for, but normally, you talk to a local device
    (be it internal or external).

    I don't know how the host-host communication and device emulation are
    handled. I'd have to read the patent(s) and identify the related code in
    the SCSI BIOS (there are still some unknown and rather confusing
    parts...). But the implementation is almost certainly limited to IBM
    SCSI hosts and disk-related operations. Custom software would be needed
    for general system-system communication.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Louis Ohland@21:1/5 to Tomas Slavotinek on Sat Jan 21 06:26:28 2023
    https://www.ardent-tool.com/SCSI/SCSI_Communication_Test_Bus.html

    About 5 years ago, I read a post on a photography group, the OP was
    doing image processing and used SCSI to pass the file? dunno, but he
    wrote code to use the SCSI bus as a network? file transfer?. IIRC, it
    involved Kodak (cameras? codecs? warp drive?), at least one 8580, and of course, IBM MCA SCSI. Copied Tim, and moved on.

    Tomas Slavotinek wrote:
    On 21.01.2023 2:00, Louis Ohland wrote:
    MAJ Tom, can SCBs be used to communicate over the SCSI bus? SOS?

    https://www.ardent-tool.com/docs/patent/US5499378.pdf

    Yes, that's what it's used for, but normally, you talk to a local device
    (be it internal or external).

    I don't know how the host-host communication and device emulation are handled. I'd have to read the patent(s) and identify the related code in
    the SCSI BIOS (there are still some unknown and rather confusing
    parts...). But the implementation is almost certainly limited to IBM
    SCSI hosts and disk-related operations. Custom software would be needed
    for general system-system communication.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)