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MODE 108 is medium-resolution screen MODE supported by the VideoNuLA
hardware, selectable with the VideoNuLA ROM.
The MODE 108 code adapts the MODE 4 screen, adding extra colour bits to provide a
9-colour version of MODE 4, 40 × 32 characters in 9 colours.
'MODE 108 (&68+4)'
| Type
|
Bitmapped
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| Resolution
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Text
|
80 × 32 characters
|
| Graphics
|
|
| Character size
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5 × 8 pixels
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| Pixel aspect
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1:2 (tall)
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| Bits per pixel
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1
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| Default palette
|
Logical colour
|
Actual colour
|
| 0
|
0 (black)
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| 1
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1 (red)
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| 2
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2 (green)
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| 3
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3 (yellow)
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| 4
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4 (blue)
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| 5
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5 (magenta)
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| 6
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6 (cyan)
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| 7
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7 (white)
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| 8
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7 (white)
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| Memory
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allocated
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10240 bytes
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| on screen
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10240 bytes
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| Address range
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Model B etc.
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&5800..&7FFF
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| Configuration
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Video ULA control register
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| Video ULA palette register file
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| CRTC register file
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References
Jgharston (talk) 17:26, 22 February 2020 (CET)
