PA-RISC Visualize Workstation Universal Serial Bus

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Port Evolution on all-new PA-RISC SPUs
• PS/2 is not present on SPUs with built-in USB, and is not expected to re-appear
on any future all-new processor design prior to IA-64.
• Parallel may be replaced by a USB-parallel adaptor in the next generation.
• RS-232C remains available. Next generation may have only one port (a PC trend
already in progress).
1998
1999 2000
PS/2
USB
Serial
Parallel