MODE 14

MODE 14 is the unofficial title of a low-resolution screen MODE, selectable with the *MODE command or the NewModes sideways ROM module.

The MODE 14 code adapts the MODE 6 screen to provide a 4-colour version of MODE 6, 40 × 32 characters in 4 colours. It does this by redefining the character set to provide thin characters.

'MODE 14'

Type	Bitmapped
Resolution	Text	40 × 32 characters
	Graphics	test only
Character size	4 × 8 pixels
Pixel aspect	1:1 (square)
Bits per pixel	2
Default palette	Logical colour	Actual colour
	0	0 (black)
	1	1 (red)
	2	3 (yellow)
	3	7 (white)
Memory	allocated	8192 bytes
	on screen	8000 bytes
Address range	Model B etc.	&6000..&7FFF
Configuration	Video ULA control register	&44
	Video ULA palette register file	&07 &17 &26 &36 &47 &57 &66 &76 &84 &94 &A0 &B0 &C4 &D4 &E0 &F0
	CRTC register file	&3F &28 &31 &24 &26 &00 &20 &22 &01 &07 &67 &08

MODE 14 can be created manually with the following code running in the I/O processor.

   BASIC:
   MODE 6     :REM Base MODE
   ?&30A=39   :REM Characters per line
   ?&34F=8    :REM Bytes per character
   ?&360=3    :REM Number of colours
   VDU 20     :REM Reset palette
   *FX154,68
   
   6502:
   LDA #22:JSR OSWRCH
   LDA #05:JSR OSWRCH          \ Base MODE
   LDA #&27:STA &30A           \ Characters per line
   LDA #&08:STA &34F           \ Byte per character
   LDA #&03:STA &360           \ Number of colours
   LDA #20:JSR OSWRCH          \ Reset palette
   LDA #154:LDX #84:JSR OSBYTE \ Cursor width

The character set needs to be redefined to be four pixels wide, such as with the one used with NewModes.

See Also

• NewModes

References

Jgharston (talk) 17:11, 12 October 2016 (UTC)