Service manual

ManualsBrandsSharp ManualsComputer equipmentmz-800

1)

320 x 200 dots

See the figure

below

for

VRAM configuration and

CRT

character display position.

VA

ve

(option)

$0000

0 0

1 1

2

2

I

I

40

I

I

I

I

I

Plane I

I

I

I

I

I

I

I

I

I

($1F3F

)

7999

Not

used

$2000

0

0

1 1

2

2

I

I

I

I

I

I

I

I

I

I

I

Plane

II

I

I

I

I

I

7999

Not

used

$3FFF

2)

640 X

200

dots

Because

it

operates in the cycle steal mode,

two

bytes

of

display data are fetched

during

one byte

display cycle. (See the chart in separate page.)

See the figure

below

for

VRAM configuration and

CRT

character display position.

$0000

($1F3F )

$2000

($3F3F)

$3FFF

0

2

4

I

I

I

80

I

I

I

I

I

15988

Not

used

1---,

---

3

5

:

79

I

I

I

I

I

I

15999

Not

used

VA

(Plane

I)

0

2

4

I

I

I

I

I

--,---

3

:,

I

I

I

I

I

I

I

ve

(option)

(Plane

Ill)

>

Plane

III

Plane

IV

18

2

; I : I

I I

: I

I I

I

2~

17960

(Raster)

2

3

2

40

---"DJ

~

I

I

I

I

----hd

7999

----

eRT display position

2 3 4 80

o

I ' I ' t'

I-~EJ

80

__

--l--H

I

I

I

I

200

"'-159-20--1---+-1

~::::::::::::::::::

i

'''''

I

eRT

display

position

•

MZ-800