Tandy 1000 SL Technical Reference Manual page 59

Address D e s c r i p t i o n
03DA-03DE W r i t e V i d e o
Array A d d r e s s a n d Read S t a t u s (03DA)
Write video
A r r a y Data (03DE)
0 3DB
0 3DC
0
3 D D
R e a d (03DA)
W r i t e
(03DE)
00
B i t
0
00 B i t 1
0 0 B i t 2
0 0 B i t 3
0 0 B i t 4
0 1 B i t 0
0 1 B i t 1
0 1 B i t 2
0 1 B i t 3
0 2 B i t 0
0 2 B i t 1
0 2 B i t 2
0 2 B i t 3
0 2 B i t 5
0 3 B i t 0
0 3 B i t 1
0 3 B i t 2
0 3 B i t 3
0 3 B i t 4
0 3 B i t 5
Display
I n a c t i v e
N o t
Used
L i g h t Pen S e t N o t Used
L i g h t S w i t c h
S t a t u s
N o t
used
V e r t i c a l R e t r a c e N o t Used
N o t Used N o t Used
P a l e t t e Mask 0
P a l e t t e Mask 1
P a l e t t e Mask 2
P a l e t t e Mask 3
Border B l u e
B o r d e r G r e e n
B o r d e r Red
B o r d e r I n t e n s i t y
R e s e r v e d =
0
Mono
E n a b l e = 1
R e s e r v e d = 0
B o r d e r E n a b l e
4-COlOr H i g h R e s o l u t i o n
1 6 - C o l o r
Mode
E x t r a V i d e o Mode
C l e a r L i g h t P e n L a t c h
P r e s e t L i g h t P e n L a t c h
Extended R A M Page R e g i s t e r
-
CPU R e l a t i v e
B i t
D e s c r i p t i o n
0 E x t e n d e d A d d r e s s i n g Modes
1 N o t Used
2
N o t
used
3
CRT
video Page
A d d r e s s 1117"
4 CRT
video
P a g e A d d r e s s 1118"
5 CPU P a g e A d d r e s s ''17"
6 CPU P a g e A d d r e s s 1118"
7 Select 64K Or 256K
RAM
48