Sharp mz-800 Instrukcja Obsługi Pobierz pdf (Strona 15)

Scroll and and

control

circuit

hardware

• Block diagram

Start address

SEA-SOF

10

DA(MA)

10

7 SEA

DA(MA)

7

Scroll

width

SOF

c

Scroll offset

Relation

of

display address. SEA. SSA. vs

SOF

Display address

m

I k

j i

SSA

SSA SSA

SSA SSA SSA

6

5

4 3 2

SEA

SEA

SEA SEA SEA

SEA

6

5

4 3

2

SOF

SOF SOF

SOF

SOF SOF

9

8

7

6

5

Screen left end address

o Line 0

0 0

0 0

1 Line

0

0 0 0 0

2 Line

0

0 0 0

0

3 Line

0

0 0 0 0

8 Line

0 0 0

0

1

16 Line

0 0

0 0

24 Line

0 0 0

1

192 Line

0

199 Line

Relation

of

SW vs

SOF

SW>

SOF

h

SSA

1

SEA

1

SOF

4

0

0

0

0

0

1

1

0

0

14

MZ-800

Scroll

control

register

SSA: Scroll start address

Increment

of

SSA: $5

Minimum

value

of

SSA:

$0

Maximum

value

of

SSA:

$78

MSB

LSB

N

6

5

4 3 2

SEA: Scroll end address

Increment

of

SEA: $5

Minimum

value

of

SEA:

$5

Maximum

value

of

SEA:

$70

MSB

LSB

N

6

5

4 3

2

SW:

Scroll

width

Increment

of

SW:

$5

Minimum

value

of

SW:

$5

Maximum

value

of

SW:

$70

Relation

of

SW. SEA. vs SSA

SW

= SEA - SSA

SW>

SSA

MSB

LSB

N

6

5 4 3

2

S~

I

SOF: Scroll offset

Increment

of

SOF:

$5

Minimum

value

of

SOF:

$0

(without

offset)

Maximum

value

of

SOF: $3E8

MSB

LSB

SOF

1 I

7

6 5

4

3

2

S~F

I

MSB

LSB

SOF

21

__________

1

9

S~F

1

S~A

I

f e d

I

c

b a

-

-

0

SEA I

I

S~F

IS~F

S~F

I

-

SOF

3 2

I

I

I

0

0 0 0 0 0

0

0

1 0

0 0 0

First line

1 0 0 0

0 0

1 1 0 0

0

1

0 0

0 0 0 0

Second line

0

0 0 0 0 0 0

Second line

1

0 0

0

0

0 0

0 0 0 0

0

0

0

Twenty

fifth line

0

0 0 0 0

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 70 71

Komentarze do niniejszej Instrukcji

Brak uwag