Tandy 1000 SL Technical Reference Manual page 144

A d d r e s s Range Hex
-----------------
B i t
---
0 0 6 2
-
P o r t
C
0063-0064
P l a n a r C o n t r o l
0 0 6 5
0 0 6 6
0 0 6 7
Non V o l a t i l e Memory Access
037C
Read/Write
R/W
n o t used
R/W
n o t u s e d
R/W
n o t used
R/W
O=slow s p e e d
Read
N O V D I
Read o u t p u t Timer
# 2
Read O=color
Read l = P a r i t y check
P o r t n o t used
P l a n a r R e g i s t e r Read/Write
R e
se r ved
R e s e r v e d
R e s e r v e d
1 = F D C
c h i p s e l e c t e n a b l e
R e s e r v e d
Reserved
R e s e r v e d
R e s e r v e d
Not
Used
P o r t
D
n o t used
N o n - v o l a t i l e memory w r i t e o n l y
NOVDO
NOVCE
NOVC LK
R e s e r v e d
Rese r v
ed
Reserved
R e s e r v e d
R e
s
e r ved
1 2