Megatel Quark/100 Specifications download pdf (Page 75)

GROUND

SEL

C-19

GROUND

SEL

C-18

GROUND

SEL

B-18

GROUND

DIRECTION

C-17

GROUND

STEP

A-17

GROUND

A-16

WRITE

DATA

C-20

GROUND

B-20

WRITE

GATE

A-18

GROUND

TRACK

B-29

GROUND

WRITE

PROTECT

C-29

GROUND

READ

DATA

C-16

GROUND

B-16

SEP

DATA

GROUND

SEP

CLK

---~-

Notes:

numbers

the

above

table refer to standard

edge

connector pin

numbers

for

8-inch

floppy disk drive.

------------------------------------,------------------------------------------------

TABLE

VIlle

ASCII-ENCODED

PARALLEL-ouTPUT

KEYBOARD

CONNECTIONS

FUNCTION

QUARK

REMARKS

KEYBOARD

B-21

KEYBOARD

C-21

KEYBOARD

A-21

KEYBOARD

C-22

KEYBOARD

A-22

KEYBOARD

C-23

KEYBOARD

A-23

KEYBOARD

B-22

KEYBOARD

STROBE

B-23

Notes:

the least significant

bit

of the

ASCII

code

i9nored

the

BIOS

STROBE

initialized

active

low

The

keyboard

input uses Port A of the

PIA

and

CA2.

2. All of the

keyboard

input

Lines

are TTL-compatible.

keyboard

with

active

high

STROBE

output is to

connected to the

QUARK,

the

STROBE

input

Line

may

have

inverted

until

the console input routine in the

BIOS

patched to recognize

active

high

STROBE.

TABLE

VIlIf

DIRECT-DRIVE

DATA

DISPLAY

MONITOR

CONNECTIONS

FUNCTION

QUARK

REMARKS

------------------------------------------------------

Video

input

monitor

B-1

Horizontal

sync

input

C-1

Vertical

sync

input

A-2

Signal

ground

monitor

A-1

The

video output

from

the

QUARK

can

twisted

with

ground

wire.

Megatel

Computer

Technologies Toronto,

Canada

Appendix

Page

A-14

1 2 ... 70 71 72 73 74 75 76 77 78 79 80 ... 85 86

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Megatel Quark/100 Specifications Page 75

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