Курсовая работа: Микропроцессорные средства и системы
Карта
памяти :
|
3FFh |
7FFh |
BFFh |
FFFh |
|
0000h |
ROM 1 |
RAM 1 |
- |
0FFFh |
1000h |
- |
1FFFh |
2000h |
IN-OUT 1 |
2FFFh |
3000h |
ROM 2 |
3FFFh |
4000h |
4FFFh |
5000h |
RAM 2 |
5FFFh |
6000h |
6FFFh |
7000h |
- |
7FFFh |
8000h |
IN-OUT 2 |
8FFFh |
9000h |
9FFFh |
A000h |
AFFFh |
B000h |
BFFFh |
C000h |
CFFFh |
D000h |
DFFFh |
E000h |
EFFFh |
F000h |
FFFFh |
|
000h |
400h |
800h |
C00h |
|
Задача
№ 3
Разделить
адресное пространство 64 килобайта на 18 равных частей. В качестве дешифратора
адреса используется ПЛМ. Разбиение адресного пространства показать в виде схемы
и таблицы.
Размер
одной части 65536 / 18 = 3640 байт. Т.к. 3640 * 18 = 65520, последние 16 ячеек
не будут использоваться.
Произведем
разбиение 3640 байт на участки 2N :
3640
= 2048 + 1024 + 512 + 32 + 16 + 8
В
результате получим 6 областей памяти по 18 участков в каждой :
0000h-8FFFh ( участки размером 2048 )
9000h-D7FFh ( участки размером 1024 )
D800h-FBFFh ( участки размером 512 )
FC00h-FE3Fh (
участки размером 32 )
FE40h-FF5Fh ( участки
размером 16 )
FF60h-FFEFh ( участки размером 8 )
Прошивка
ПЛМ 1
Область |
Диапазон адресов |
Разряды адреса |
1
5
|
1
4
|
1
3
|
1
2
|
1
1
|
1
0
|
9 |
8 |
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
1 |
0000h-07FFh |
0 |
0 |
0 |
0 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
9000h-93FFh |
1 |
0 |
0 |
1 |
0 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
D800h-D9FFh |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FC00h-FC1Fh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
X |
X |
X |
X |
X |
FE40h-FE4Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
X |
X |
X |
X |
FF60h-FF67h |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
X |
X |
X |
2 |
0800h-0FFFh |
0 |
0 |
0 |
0 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
9400h-97FFh |
1 |
0 |
0 |
1 |
0 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
DA00h-DBFFh |
1 |
1 |
0 |
1 |
1 |
0 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FC20h-FC3Fh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
X |
X |
X |
X |
X |
FE50h-FE5Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
X |
X |
X |
X |
FF68h-FF6Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
1 |
X |
X |
X |
3 |
1000h-17FFh |
0 |
0 |
0 |
1 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
9800h-9BFFh |
1 |
0 |
0 |
1 |
1 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
DC00h-DDFFh |
1 |
1 |
0 |
1 |
1 |
1 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FC40h-FC5Fh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
X |
X |
X |
X |
X |
FE60h-FE6Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
X |
X |
X |
X |
FF70h-FF77h |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
1 |
0 |
X |
X |
X |
4 |
1800h-1FFFh |
0 |
0 |
0 |
1 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
9C00h-9FFFh |
1 |
0 |
0 |
1 |
1 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
DE00h-DFFFh |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FC60h-FC7Fh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
X |
X |
X |
X |
X |
FE70h-FE7Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
1 |
X |
X |
X |
X |
FF78h-FF7Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
X |
X |
X |
5 |
2000h-27FFh |
0 |
0 |
1 |
0 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
A000h-A3FFh |
1 |
0 |
1 |
0 |
0 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
E000h-E1FFh |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FC80h-FC9Fh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
X |
X |
X |
X |
X |
FE80h-FE8Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
X |
X |
X |
X |
FF80h-FF87h |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
X |
X |
X |
6 |
2800h-2FFFh |
0 |
0 |
1 |
0 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
A400h-A7FFh |
1 |
0 |
1 |
0 |
0 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
E200h-E3FFh |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FCA0h-FCBFh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
1 |
X |
X |
X |
X |
X |
FE90h-FE9Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
X |
X |
X |
X |
FF88h-FF8Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
X |
X |
X |
7 |
3000h-37FFh |
0 |
0 |
1 |
1 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
A800h-ABFFh |
1 |
0 |
1 |
0 |
1 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
E400h-E5FFh |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FCC0h-FCDFh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
X |
X |
X |
X |
X |
FEA0h-FEAFh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
X |
X |
X |
X |
FF90h-FF97h |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
X |
X |
X |
X |
8 |
3800h-3FFFh |
0 |
0 |
1 |
1 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
AC00h-AFFFh |
1 |
0 |
1 |
0 |
1 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
E600h-E7FFh |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FCEOh-FCFFh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
1 |
X |
X |
X |
X |
X |
FEB0h-FEBFh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
X |
X |
X |
X |
FF98h-FF9Fh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
X |
X |
X |
X |
9 |
4000h-47FFh |
1 |
0 |
1 |
1 |
0 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
B000h-B3FFh |
1 |
0 |
1 |
1 |
0 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
X |
E800h-E9FFh |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
X |
X |
X |
X |
X |
X |
X |
X |
X |
FD00h-FD1Fh |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
X |
X |
X |
X |
X |
FEC0h-FECFh |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
X |
X |
X |
X |
FFA0h-FFA7h |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
X |
X |
X |
X |
Прошивка
ПЛМ 2
Страницы: 1, 2, 3, 4
|