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Old 20 December 2014, 19:42   #16
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Join Date: Aug 2004
Posts: 3,094
Some tips for getting the best possible serial throughput:
  • Make sure your system's VBR points to 32-bit fast RAM
  • Make sure the system stack pointer (SSP) points to 32-bit fast RAM
  • Make sure Kickstart is in 32-bit fast RAM
  • Make sure the CPU data cache is enabled (it should already be)
You could also try to find a cheap used Zorro II serial card. At least a few years ago they were relatively easy to find, due partly perhaps to people no longer needed them once they had broadband internet access.

By the way, what make of CPU card do you have? At least GVP ones had a patch to improve serial operation in conjunction with the on-board SCSI controller.
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