AT&T 6300 Programmer's Manual page 338

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LOCATE (Graphics)

if 'line' and 'map' are specified, this value replaces the

bitmap for scanline 'line' of the cursor specified by 'rate'.

The cursor bitmap is a byte array which is XOR'd with the

screen to display the cursor. For medium-resolution mode,

each scanline of the cursor is represented by 2 bytes; the

low-order byte of each scanline is the left one on the screen.

For other modes, there is one byte per scanline. The size of

the array is the number of scanlines per row of text times the

number of bytes per cursor scanline: this is 8 for high-

resolution mode, and 16 for the other modes. Cursor bitmaps

are kept separately for screen modes 1, 2, and 3. The cursor

state for each mode is restored if another screen mode is

selected, and the original mode is reselected. Likewise,

separate bitmaps are kept for the insert, overwrite, and user

GWBASIC includes a blinking cursor for

graphics mode. The maximum height of this

cursor is 8 in modes 1 and 2, and 16 in mode 3.

Cursor scanlines are numbered starting with 0

for the top scanline.

The graphics mode as well as in text mode

support three different cursors (see the

LOCATE text Statement).

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