Tandy 1000 SL Technical Reference Manual page 58

A d d r e s s D e s c r i p t i o n
0 3D5 6 8 4 5 Data R e g i s t e r
0 3D6 N o t Used
0 3D7
N o t Used
0 3D8 Mode S e l e c t R e g i s t e r
B i t
0 High R e s o l u t i o n C l o c k
B i t 1 G r a p h i c s S e l e c t
=
0 S e l e c t s 40 By 25 A l p h a n u m e r i c Mode
= 1 S e l e c t s 80 By 25 A l p h a n u m e r i c Mode
=
0 S e l e c t s A l p h a n u m e r i c Mode
=
1 S e l e c t s 320 By 200 G r a p h i c s Mode
= 0 S e l e c t s Color Mode
= 1 S e l e c t s B l a c k And W h i t e Mode
= 0 D i s a b l e s V i d e o S i g n a l
= 1 E n a b l e s V i d e o S i g n a l
= 0 D i s a b l e s 640 By 200 B&W G r a p h i c s Mode
= 1 E n a b l e s 640 By 200
B&W
G r a p h i c s Mode
= 0 D i s a b l e s B l i n k i n g
= 1 E n a b l e s B l i n k i n g
B i t
2 B l a c k And W h i t e
B i t 3 V i d e o E n a b l e
B i t 4 640 D o t G r a p h i c s
B i t 5 B l i n k E n a b l e
0 3D9 Color S e l e c t R e g i s t e r
B i t 0 B a c k g r o u n d B l u e
B i t
1
B a c k g r o u n d G r e e n
B i t 2
Background Red
B i t
3 B a c k g r o u n d I n t e n s i t y
B i t
4
F o r e g r o u n d I n t e n s i t y
B i t
5 c o l o r S e l e c t
47