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Commodore 1581 - Handshake

Commodore 1581
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HANDSHAKE
The
figure
below
shows
the
burst
transfer
protocol.
It
is
a
stat-depen-
dent
protocol
(simple
and
fast).
As
the
clock
line
is
toggled,
a
byte
of
data
is
sent.
Burst
protocol
is
divided
into
three
parts:
1.
Send
Command:
send
string
using
existing
kernal
routines.
2.
Query:
determine
whether
the
peripheral
is
fast.
3.
Handshake
Code:
follow
handshake
conventions.
DATA
CLK
SRQ
(Acknowledge
and
Ready
For
Data)
RFD
(Ready
For
Data)
-NOTE
An
example
of
using
the
burst
routines
is
on
the
test/
demo
diskette.
Print
those
files
and
use
th^m
as
references
for
creating
your
own
programs
that
use
biirst
protocol.
99

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