M z 3500 – Sharp MZ-3500 User Manual
Page 39
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M Z 3500
Pm No
Polarity
Signal Name
IN/OUT
Function
35-37
AD13(LC0)-
AD15(LC2l
IN/OUT
Provides the following functions based on the operational mode of the GDC {graphic display mode,
character display mode 0, character display mode 1).
1.
In the graphic display mode and character display mode 0: Bidirectional address/data bus
2. In the character display mode 1: Line counter output in connected to the character generator
ROM or graphic RAM address.
• In the graphic and character display mode 0: AD13~AD15.
• In the character display mode 1: LC0~LC1.
{Address Data bus 13 15)
(Line Count 0 2)
38
A16(LC3)
(ATTO
NK-CLC)
OUT
Provides the following functions based on the operational mode of the GDC {graphic display mode.
0.
character display mode 1):
1.
Graphic display mode: Image memory address output.
2.
Character display mode 1: Line counter output.
3.
Character display mode 0: Attribute/blinking/timing signal and external line counter clear signal
(Address 16)
(Line Count 3)
(Attribute Blink — Clear Lire Counter)
39
A17(CSR)
(CSR-IMAGE)
OUT
Provides the following functions based on the operational mode of the GDC (graphic display mode,
character display mode 0, character display mode 1):
1.
Graphic display mode: Image memory address output.
2.
Character display mode 1: Cursor display output.
3.
Character display mode 0: Cursor display output, character display area (graphic) display area
select timing signal.
(Address)
(Cursor)
(Cursor-image)
40
Vcc
IN
-♦■5V supply.
- -14