Map of memory
Asem S.p.A.
39
3F8-3FF
serial 1 port
4D0-4D1
Reserved
565-568
Watch dog
680-6FF
Reserved
778-77F
Parallel port ECP
Map of memory
The values of the addresses that appear in the tables are expressed
in hexadecimal.
Addresses
Description
000000-09FFFF
RAM dynamic
0A0000-0BFFFF
Video memory
0C0000-0CFFFF
VGA BIOS
0E0000-0FFFFF
System BIOS
100000-FFFFFFFF
Extended Memory
DMA channels
Channel Controller
I/O
Memory
Maximum
transfer
Description
0
1
8 bit
8/16 bit
64 KB
Memory refresh
2
1
8 bit
8/16 bit
64 KB
Floppy disk Drive
3
1
8 bit
8/16 bit
64 KB
free
4
2
16 bit
16 bit
128 KB
DMA controller 1
5
2
16 bit
16 bit
128 KB
free
6
2
16 bit
16 bit
128 KB
free
7
2
16 bit
16 bit
128 KB
free
Содержание CPU 1021/A
Страница 1: ...86040332 CPU 1021 A ...
Страница 2: ......
Страница 7: ...Exit menu 60 ...
Страница 8: ......
Страница 9: ...Description Asem S p A 1 Chapter 1 Description ...
Страница 20: ...CPU 1021 A User s Guide 12 Asem S p A ...
Страница 22: ...CPU 1021 A User s Guide 14 Asem S p A Layout CPU 1021 A with highlighting of jumpers CPU 1021 A part A ...
Страница 23: ...Hardware setup Asem S p A 15 CPU 1021 A part B ...
Страница 27: ...Connectors Asem S p A 19 Chapter 3 Connectors Layout CPU 1021 A with connectors and switches highlighted ...
Страница 29: ...Connectors Asem S p A 21 CPU 1021 A front part B ...
Страница 30: ...CPU 1021 A User s Guide 22 Asem S p A CPU 1021 A rear part A ...
Страница 31: ...Connectors Asem S p A 23 CPU 1021 A rear part B ...
Страница 45: ...Map of memory Asem S p A 37 Chapter 4 Map of memory ...
Страница 49: ...BIOS Setup Asem S p A 41 Chapter 5 BIOS Setup ...