# u00ba user exit

The u00ba user exit performs BIOS INT 10 calls to change the video screen attributes
on the console.

## Syntax

```
result = iconv(registers, ’u00ba’)
```

## Parameter(s)

| registers | Dynamic array containing the values for the A, B, C, and D registers in the form: |
| --- | --- |
| registers | AX register (AH:AL) |
| registers | BX register (BH:BL) |
| registers | CX register (CH:CL) |
| registers | DX register (DH:DL) |

## Description

Below is a partial listing of
the functions available through the INT 10 call:

| 00 | Determine or set video state. |
| --- | --- |
| 01 | Set cursor type. |
| 02 | Set cursor position. |
| 03 | Read cursor position. |
| 04 | Read light pen. |
| 05 | Select active page. |
| 06 | Scroll page up. |
| 07 | Scroll page down. |
| 08 | Read character attribute. |
| 09 | Write character and attribute. |
| 0A | Write character. |
| 0B | Set color palette. |
| 0C | Write dot. |
| 0D | Read dot. |
| 0E | Write TTY. |
| 0F | Return current video state. |
| 10 | Set palette registers. |
| 11 | Character generator routine (EGA and above). |
| 12 | Alternate select (EGA and above). |
| 13 | Write string. |
| 14 | Load LCD character font. |
| 15 | Return physical display parameters. |
| 1A | Display combination code. |
| 1B | Functionality/state information. |
| 1C | Save/restore video state. |

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Source: https://d3codex.com/pickbasic-flashbasic/u00ba-user-exit/ - part of the D3Codex reference.