Sharp MZ-3500 User Manual download pdf (Page 39)

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)

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)

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)

Vcc IN -♦■5V supply.

- -14

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 115 116

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Sharp MZ-3500 User Manual Page 39

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