Advanced Micro Computers Am96/4016 User Manual page 43

The HOST program can iss ue fi ve error
messages, which are explained below.
the currently logged-in disk drive in
parentheses, e.g., (A).
MESSAGE EXCEEDS 80 CHARACTERS
Re-enter your message using fewer
characters.
Exits'
bug prl
Declar
source
for tr
binary
extens;
fi
1
ena:
used).
Loads,
and c
source
value
10100
des i re(
origin
2.
I fi
1
ename. HE X
1. DEBUG
3. R value
5. SAVE nnn
filename
4. Control C
To overcome this situation, the Devel-
opment System's DEBUG program can be
used to load, translate and offset the
hex source file before down-loading to
the Eval uation Board. Thi sis accom-
plished with the following entries:
TRANSMISSION ERROR - Communication
with the Evaluation Board produced a
parity error and transmission is
being retried. If this continues,
reset the CPU (power off/on, un
1
ess
you have connected a reset circuit).
The Development System's MACR08000
(MACZ) Assembler produces hex code that
must be converted to binary before
down-loading to the Evaluation Board.
Normally, the Development System's LOAD
program is used for this translation.
However, AMDOS8 assumes programs always
start at 100 hex, while on the Evalua-
tion Board programs must start no lower
than about 4100 hex (see figure 3-1).
Invalid Control L COMMAND ERROR
command.
zaooo
MESSAGE PENDING - A prior mes-
sage to the Evaluation Board CPU has
not yet been acted upon.
ILLEGAL REQUEST FROM
zaooo -
The
Development System has received an un-
recogni zed message from the Eval ua-
tion Board.
After an up or down load, the HOST pro-
gram can be terminated with the Control
L and END sequence so that execution on
the Eval uation Board may proceed con-
currently with unrelated execution
under the Development System's oper-
at i ng system. The message HOST
SHUTDOWN appears upon termination.
This soft shutdown is provided so that
t he program can close any fi
1
es
1
eft
open.
The Control L entry indicates to the
HOST prog ram that t he command to fo
1-
low is meant for it. The Control LEND
sequence is currently the only user
command to the HOST program. All other
command s entered from the AmSYS 8/8
console (i.e., those without Control L)
are transmitted to the Evaluation Board
for interpretation. Upon transmission,
the Development System will acknowledge
this with its prompt. The Evaluation
Board will acknowledge reception of the
command with its prompt, another more
specific response, or both. Thus, the
Development System con sol e can effect-
ively become the Evaluation Board
console.
3-11