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  • H02909 VIDEO RASTER OR COLOR BARS DISPLAYED ON SYSTEM POWER UP

    From Louis Ohland@21:1/5 to All on Tue Feb 8 23:41:23 2022
    VIDEO RASTER OR COLOR BARS DISPLAYED ON SYSTEM POWER UP

    EARLY LEVEL 8530'S MAY EXHIBIT RASTER OR COLOR BARS ON THE DISPLAY
    DURING POST. BIOS PRIOR TO 12/12/86 DID NOT TAKE CONTROL OF THE CGA+
    VIDEO CHIP UNTIL AFTER POST. THIS DOES NOT AFFECT MACHINE OPERATION.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Tomas Slavotinek@21:1/5 to Louis Ohland on Wed Feb 9 12:05:56 2022
    Huh, "CGA+ VIDEO CHIP" - is that another name for MCGA?

    On 09.02.2022 6:41, Louis Ohland wrote:
     VIDEO RASTER OR COLOR BARS DISPLAYED ON SYSTEM POWER UP

     EARLY LEVEL 8530'S MAY EXHIBIT RASTER OR COLOR BARS ON THE DISPLAY
    DURING POST. BIOS PRIOR TO 12/12/86 DID NOT TAKE CONTROL OF THE CGA+
    VIDEO CHIP UNTIL AFTER POST. THIS DOES NOT AFFECT MACHINE OPERATION.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Louis Ohland@21:1/5 to Tomas Slavotinek on Wed Feb 9 08:01:48 2022
    Always a problem searching for period articles, what did they call it
    _at that time_ ?

    On 2/9/2022 05:05, Tomas Slavotinek wrote:
    Huh, "CGA+ VIDEO CHIP" - is that another name for MCGA?

    On 09.02.2022 6:41, Louis Ohland wrote:
      VIDEO RASTER OR COLOR BARS DISPLAYED ON SYSTEM POWER UP

      EARLY LEVEL 8530'S MAY EXHIBIT RASTER OR COLOR BARS ON THE DISPLAY
    DURING POST. BIOS PRIOR TO 12/12/86 DID NOT TAKE CONTROL OF THE CGA+
    VIDEO CHIP UNTIL AFTER POST. THIS DOES NOT AFFECT MACHINE OPERATION.


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Louis Ohland@21:1/5 to Tomas Slavotinek on Wed Feb 9 08:20:44 2022
    Slogging about, it looks to be... Though I think it refers to the modes
    that MCGA supported, and not the actual MCGA chipset.

    On 2/9/2022 05:05, Tomas Slavotinek wrote:
    Huh, "CGA+ VIDEO CHIP" - is that another name for MCGA?

    On 09.02.2022 6:41, Louis Ohland wrote:
      VIDEO RASTER OR COLOR BARS DISPLAYED ON SYSTEM POWER UP

      EARLY LEVEL 8530'S MAY EXHIBIT RASTER OR COLOR BARS ON THE DISPLAY
    DURING POST. BIOS PRIOR TO 12/12/86 DID NOT TAKE CONTROL OF THE CGA+
    VIDEO CHIP UNTIL AFTER POST. THIS DOES NOT AFFECT MACHINE OPERATION.


    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From IBMMuseum@21:1/5 to All on Thu Feb 10 01:12:23 2022
    EARLY LEVEL 8530'S MAY EXHIBIT RASTER OR COLOR BARS ON THE DISPLAY
    DURING POST. BIOS PRIOR TO 12/12/86 DID NOT TAKE CONTROL OF THE CGA+
    VIDEO CHIP UNTIL AFTER POST. THIS DOES NOT AFFECT MACHINE OPERATION.

    The 12/12/1986 BIOS was "Revision 01", so "PRIOR TO" is only the 09/02/1986 "Revision 00" BIOS - I have an image of it, so it is on at least one of my systems (if I had to guess, the brown planar with the bodge-wire). Revision '00' was said to have the
    original MCGA/VGA font that was changed later: https://www.vcfed.org/forum/forum/genres/pcs-and-clones/44732-original-ibm-mcga-vga-text-8x16-font-from-ps-2-model-30-revision-0-09-02-86

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