Sharp MZ-3500 - Manual (Page 27)

MZ3500
9) Cursor
Sharp of the cursor: Same as seen in Model 3200
Reverse and blink)
10) Light pen input
incorporates the light pen input connector and its inter­
face. The light p>en, however, is an option.
Accuracy: By each character
Function: Coordinates/character code
11) Difference in specification with that of Model 3200
(1) There are two modes for the Model 3200; normal
mode ( 6 x 9 elements) and graphic mode (6x8 ele­
ments). In the normal mode of 25-line displaying of
the PC-3200, vertically adjacent graphic symbols do
not joint. But, they will joint with the Model 3500.
Model-3200 Model 3500
(2) No line will be displayed for the medium resolution
CRT (640x200 dot).
It is possible to display line on the high resolution
CRT, compatible to line the utilizing program of
the Model 3200
4-2. Video RAM
1) Structure of VRAM
GDCl (for character) GDC2 (for graphic)
#BFFF
17FFF
Attribute 1
#07FF
2Kbit > 8 2Kbit
( S-RA.M )
x4
(ASCI
L (. s-
R.AM)
#0000
#3FFF
# 0 0 0 0
----------- n
16Kbit
x8
(G)
_________ J
1
1 1
1
\
1
(D-RAM)
16Kb, t
x8
I6Kbit
x8
( B) (R)
DO- -D7 1)8—011 DO------D7 D8- -D15
Solid line 48KB option
Broken line. To be added to comprise
the 96KB option.
VRAM capacity Graphic option 1: 48KB
Basic 3KB (including altibutes) Graphic option 2 96KB
Bit structure of V R A M
__ ___CRT
640 X 400 dot 640 X 200 dcn
Character VRAM | 8 bit / word 8 bit / word
Graphic 48 KB 1 16 bit / word 8 bit / word
V RAM 96 KB 1 16 bit / word 16 bit / wo'd
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