Sharp MZ-800 Service Manual

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

Sharp MZ-800 Specifications

General

Brand	Sharp
Model	MZ-800
Category	Desktop
Language	English