DOS ain't dead - uart interrupt tx rx in Dos32 bit open watcom

uart interrupt tx rx in Dos32 bit open watcom (Developers)

posted by Brian_extended, 26.01.2014, 02:06

Learned an important lesson about the 16550 FIFO- once in the Interrupt Handler, keep looping until all conditions are clear. Can't just service one byte and expect the interrupt to be clear. At this point, running reliably at 115Kb/s.

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Complete thread:

uart interrupt tx rx in Dos32 bit open watcom - maui, 11.11.2013, 11:14 (Developers)
- uart interrupt tx rx in Dos32 bit open watcom - RayeR, 11.11.2013, 19:34
  - uart interrupt tx rx in Dos32 bit open watcom - RayeR, 12.11.2013, 01:50
- uart interrupt tx rx in Dos32 bit open watcom - tom, 12.11.2013, 12:24
  - uart interrupt tx rx in Dos32 bit open watcom - RayeR, 12.11.2013, 12:30
  - uart interrupt tx rx in Dos32 bit open watcom - bretjohn, 12.11.2013, 16:55
    - uart interrupt tx rx in Dos32 bit open watcom - maui, 12.11.2013, 19:23
      - uart interrupt tx rx in Dos32 bit open watcom - bretjohn, 12.11.2013, 21:12
      - uart interrupt tx rx in Dos32 bit open watcom - tom, 13.11.2013, 11:22
        uart interrupt tx rx in Dos32 bit open watcom - maui, 13.11.2013, 15:49
        uart interrupt tx rx in Dos32 bit open watcom - Oso2k, 13.11.2013, 22:26
        uart interrupt tx rx in Dos32 bit open watcom - maui, 15.11.2013, 19:43
        uart interrupt tx rx in Dos32 bit open watcom - tom, 16.11.2013, 19:02
        uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 17.11.2013, 04:21
        uart interrupt tx rx in Dos32 bit open watcom - maui, 19.11.2013, 12:42
        uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 19.11.2013, 20:59
        uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 22.11.2013, 15:22
        uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 23.11.2013, 03:09
        uart interrupt tx rx in Dos32 bit open watcom - maui, 24.11.2013, 13:45
        uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 26.11.2013, 23:25
        uart interrupt tx rx in Dos32 bit open watcom - RayeR, 27.11.2013, 03:26
        uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 05.01.2014, 20:42
        uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 26.01.2014, 02:06
        uart interrupt tx rx in Dos32 bit open watcom - tom, 27.01.2014, 22:46
- uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 16.11.2013, 01:14
  - uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 16.11.2013, 01:15
  - uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 16.11.2013, 01:16
- uart interrupt tx rx in Dos32 bit open watcom - Brian_extended, 16.11.2013, 01:32