Juniper-systems Allegro DOS Manual Manual do Utilizador descarregar pdf (Página 246)

Page 8-12 Software Developer's Guide for DOS

Subfunction: AL = 11h (set keypad shift flag settings)

The keyboard shift flags (<Ctrl>, <Alt>, <Shift>) can be individually

controlled such that when the key is pressed it will register as either left,

right, or both scan codes. The <alt>-nnn function can be enabled/

disabled with this function.

Call with: BL=b7-b0 where:

b1,b0 = 01 right <Shift> only

10 left <Shift> only

11 both (Default)

b3,b2 = 01 right <Alt> only

10 left <Alt> only

11 both (Default)

b5,b4 = 01 right <Ctrl> only

10 left <Ctrl> only

11 both (Default)

b6 = 0 disable <Alt>-nnn

1 enable <Alt>-nnn (default)

b7 = reserved

Subfunction: AL = 12h (get Allegro ID)

Returns offset of Allegro ID string in AX. Segment is F000.

Subfunction: AL = 14h (select font size in text mode)

Call with: b1 = 00h return current setting in AL

01h set 8 x 8 pixels

02h set 8 x 12 pixels

03h set 10 x 12 pixels

04h set 16 x 16 pixels

Subfunction: AL = 15h (perform system hard reset)

No arguments, when called does a hard reset.

Subfunction: AL = 19h (set LED brightness)

Call with: b1 = 00h return current setting in AL

= 01h dim

= 02h medium

= 03h bright

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Juniper-systems Allegro DOS Manual Manual do Utilizador Página 246