PCjr. and CGA Regression? \ VOGONS

PCjr. and CGA Regression?

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First post, by Great Hierophant

Posted on 2013-08-15, 14:06

Great Hierophant Offline

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In the PCjr. mode, this is what is displayed in 0.74 :

The attachment maniac_000.png is no longer available

This is identical to the graphics displayed in the CGA mode.

In the latest SVN, this is displayed :

The attachment maniac_001.png is no longer available

This gives a four color combination not found on the CGA. I wonder if the white color should be light gray.

I know that much has changed since 0.74, including removal of the CGA Color Select and Mode Control registers in the PCjr. machine type, but as the Jr. was supposed to be BIOS compatible with the PC, I would have thought that the CGA colors should be identical (except for intensity).

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Reply 1 of 1, by VileR

Posted on 2013-08-15, 15:58

VileR Offline

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This was covered somewhere here - it would seem that the DOSBox SVN palette is correct, even if it looks rather odd. Setting the palette through the BIOS function, instead of writing to the palette registers directly, will give the same "mixed intensity" palette on a real PCjr.

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