Sharp MZ-800 - 3.1 Introduction

MZ-800
Table-2 Display mode vs read format register
Display mode SRCH/SING B/A IV m
n
Function (NOTE)
--------------r---------------+--------+---------~----~----_+----_r----~--------------------__i
Single color
data read
320 x 200.
4116 colors
640 x 200.
1/4 colors
Frame A: "0"
o
Frame B: "1"
o
o
o
Plane I data read
o o o
Plane n data read
~--~-----+-----+----~-----------------------
o
o o
Plane m data read
o
o
o
Plane IV data read
-----------~--------------~---------~--------_+----_+----~----4_----+_--------------------~
Specified color
search
-----
-~-.---
c---
320 x 200.
4 colors
320
x 200.
16 colors
640
x 200.
1 color
640 x 200.
4 colors
MZ-700
(*): Refer to the display frame of Table-1.
NOTES:
1
1
0
•
Read for the non-existing VRAM are not assured .
o
x
0
1
x
0
•
The above parameter has to be set up for the MZ-700
mode.
*
B/A must be set to "0" for the standard MZ-800
(without MZ1 R25).
x
x
x
x
o
o
o
o
o
o
o
1
x
x
x
x
x
x
x
x
0
22
x
o o
T. n dot search
x
o
I, n dot search
x
o T. n dot search
x
L n dot search
o
x
x
m.W dot search
x
x
m. W dot search
o
x x
m. IV dot search
x
x
m. IV dot search
o o o
T.1f. m. IVC dot search
o o
L1f. m. IVC dot search
o o
T. n. m. IV. dot search
o
I. n. m. IV. dot search
o o T. n. m. IV. dot search
1
1
1
L n. m. IV. dot search
x x
0 T. dot search
x
x
1
I. dot search
0
x
x
m. dot search
1 x
x
m. dot search
0
x
0 T. m. dot search
0
x
1
L m. dot search
1
x
0 T. m. dot search
1
x
1
I. m. dot search
0
0
1
Data. ATB. CG area read