Please refer to TEXT mode before progressing on to HIRES.

HIRES mode offers a far greater control over the screen than TEXT mode, especially over attributes.

HIRES is split into two screen modes. The top 90% of the screen is HIRES (240*200 individually addressable pixels) whilst the bottom 10% is taken up by 3 TEXT lines. These differ little from TEXT mode except that the character sets now reside at 38912 (#9800) for the standard character set instead of 46080 (#B400) and 39936 (#9C00) for the Alternate character set instead of 47104 (#B800).

HIRES is similar to TEXT but there are no Character elements. Instead, every single pixel has a memory and bit address.

There is also no Double height capability.

Codes 0 to 31 are used for attributes. These are shown in Table 1.0.

Codes 32 to 63 mirror codes 96 to 127.

Codes 64 to 127 define the bit-map of 6 pixels. On screen, the invisible grid is 40 cells (40 columns) by 200 cells (Rows). Each Cell is represented in memory as a byte.

Codes 128 to 255 (As with Text mode) mirror but inverse codes 0 to 127.

The limitation of 6 pixels needed for every attribute change on a line still exists but because this now only effects a pixel line rather than 8 lines (TEXT), greater accuracy can be achieved.

Also, Inverse can allow many more colours to co-exist on the same line giving the illusion (In many cases) of impossible screens!

Refer to the HIRES Inlay page for more details.

Non-standard colours can also be achieved by alternating ink or paper colours on consecutive rows.

For Example, Since Yellow and White are so close to each other in luminance, they will produce an overall colour in between if the are plotted in the aforementioned manner.

Other effective colour combinations are Red/ Magenta, Green/ Yellow and White/ Cyan.

The example below illustrates the effect with Green and Yellow Paper..

10 HIRES
20 FOR R = 1 TO 200
30 FILL 1,1,18
40 FILL 1,1,19
50 NEXT R

Finally, Try this one to create a Blue pipe with smooth edges..

10 HIRES
20 CURSET 0,100,3
30 FILL 1,1,20
40 FILL 1,1,22
50 FILL 1,1,20