Using Bitmaps for Drawing
The graphic execution module uses a bit map compatible with the
display unit to draw an area instruction in overpaint mode. An image
instruction requires one plane bit map.
| (Buffer for area) | = | (Area width) x (Area height) x (Number of planes) x (Bits/Pixel) / 8 |
| (Image buffer) | = | (Image width) x (Image height) / 8 |