Stan Barr wrote:
I thought that was only on the PCJr. Anyway my notes
say it's video
mode 8.
On the PCjr, it is mode 8. On the PC, you had to go through the
textmode trickery I explained in my last post.
The advantage of the PCjr mode (and composite color mode on stock CGA,
another 160x200 mode) is that there is no character/attribute waste: A
single byte holds 2 pixels. It was a great mode for games because the
simplicity of pixel packing was fast:
mov al,pixel1
mov cl,4
shl al,cl
or al,pixel2
Only MCGA 320x200x256 was faster.
--
Jim Leonard (trixter at
oldskool.org)
http://www.oldskool.org/
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