• Polywell 's Hummingbird 50/60 revs up PS/2s

    From Louis Ohland@21:1/5 to All on Wed Sep 29 09:54:56 2021
    https://ia802704.us.archive.org/28/items/byte-magazine-1989-05/1989_05_BYTE_14-05_Unix_CAD_and_Technology_Breakthroughs.pdf

    Page 76 physical

    Accelerate Those Model 50s and 60s

    The Hummingbird 50/60 is a 20-MHz 80286-based add-in board that boosts
    the performance of your IBM PS/2 Models 50, 50 Z, and 60 up to that of
    the 80386-based 20-MHz Models 70 and 80. It also includes 3270-emulator software.

    To install it, you use a special "chip-puller" tool to remove
    the 80286 from the original motherboard. You plug the adapter module
    into the Hummingbird adapter card, which you plug into the Micro Channel
    slot.

    Once your installation is complete, you've got a zero wait-state,
    20-MHz, CMOS 80286 chip and 32K bytes of 55-ns static RAM. The cache
    is updated during direct-memory-access reads, and there's a programmable
    cache for adapter ROMs .

    Manufacturer Polywell claims the new system operates
    exactly as before-with the same support for the 80287
    chip, for example.

    For software that is dependent on the slower clock speed,
    the HiSpeed program is available to temporarily disable
    the cache. The 3270 emulation works at all speeds.
    Price: $995 .

    Contact: Polywell, Inc . , 6 1 C
    Airport Blvd . , South San Francisco,
    CA 94080, (4 15)
    583-7222

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Louis Ohland@21:1/5 to Louis Ohland on Wed Sep 29 10:08:06 2021
    It resembles the RT Accelerator.

    https://ardent-tool.com/CPU/RT_Accelerator.html

    On 9/29/2021 09:54, Louis Ohland wrote:
    https://ia802704.us.archive.org/28/items/byte-magazine-1989-05/1989_05_BYTE_14-05_Unix_CAD_and_Technology_Breakthroughs.pdf


    Page 76 physical

    Accelerate Those Model 50s and 60s

    The Hummingbird 50/60 is a 20-MHz 80286-based add-in board that boosts
    the performance of your IBM PS/2 Models 50, 50 Z, and 60 up to that of
    the 80386-based 20-MHz Models 70 and 80. It also includes 3270-emulator software.

    To install it, you use a special "chip-puller" tool to remove
    the 80286 from the original motherboard. You plug the adapter module
    into the Hummingbird adapter card, which you plug into the Micro Channel slot.

    Once your installation is complete, you've got a zero wait-state,
    20-MHz, CMOS 80286 chip and 32K bytes of 55-ns static RAM. The cache
    is updated during direct-memory-access reads, and there's a programmable cache for adapter ROMs .

    Manufacturer Polywell claims the new system operates
    exactly as before-with the same support for the 80287
    chip, for example.

    For software that is dependent on the slower clock speed,
    the HiSpeed program is available to temporarily disable
    the cache. The 3270 emulation works at all speeds.
    Price: $995 .

    Contact: Polywell, Inc . , 6 1 C
    Airport Blvd . , South San Francisco,
    CA 94080, (4 15)
    583-7222

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