Texas Instruments 99/4A - Page 68

TABLE 10 PERIPHERAL ADDRESSES
------------------- ON CRU BUS
CRU ADDRESSES
A3
A4
A5
A6
A7
USE (PERIPHERAL)
DEVICE
NUMBER
>0000- >OFFE
0
Y
y
X X
Internal use
>1000 — >1 OPE
1 0 0 0 0
Reserved
0
>1100->11 PE 1
0
0
0
1
Disk controller
1
>1200 — >12FE 1 0 0 1
0
Reserved
2
>1300->13FE
1
0 0
1
1
RS232,ports 1 and 2
-T
>1400 — >14FE 1 0
1 0
0
Reserved
4
>1 50O- >1 5FE
1
0
1
o
1
Rs232,ports 3 and 4
C
>1600 — >16FE 1
0
1 1
0
Reserved
6
>1700 — >17FE
1 0 1 1 1 Reserved
7
>1800 — >18FE
1 1
0
0 0
Thermal Printer
8
>1900 — >19FE
1 1 O 0
1 Future expansi on 9
MAOO-MAFE 1 1 0 1
0 Future expansion
IO
>1BOO->1BFE
1 1
0
1 1
Future expansi on
1 1
>1 COO- >1 CFE
1
1 1
0
0
Future expansion
12
>1 DOO- >1 DFE
1
1 1
0
1
Future expansion
13
>1EOO — >1EFE
1 1
1
1
0
Future expansion
14
>1FOO-MFFE
1
1 1
1
1
P-Code peri pheral
15
59