Remote-processing RPC-2300 Bedienungsanleitung PDF herunterladen (Seite 11)

CHAPTER 3 SAVING PROGRAMS

RPC-2300 Page 9

To autorun a program:

1. Make sure there is a program in EPROM (from

above).

2. Make sure the autorun jum per W 1 [9-10] is

installed.

If you push the reset button, the program should

autoexecute. If there are any errors, the program will

stop (assuming you have not trapped them with ON

ERROR) and display the error message.

PREVENTING AUTORUN

When troubleshooting a program, it' s not always

convenient for an autoexecute file to r un. This is

especially true if the program has been configured to

ignore the < ESC> key. To prevent autorun, remove

jumper W1[9-10].

Later, if you wish to SAVE or LOAD a program,

reinstall this jumper. You may do so even if the power

is on and a program is running. Remember to discharge

any static electricity before installing or removing the

jumper.

LOADING AN EPROM PROGRAM

There are tim es when y ou may w ish to tempor arily

modify or otherwise test out a change to a program.

Since the program is loaded into RAM, modifications

can be made without affecting the program in EPROM.

If you find out that modifications are not desirable or did

not work, you can restore the original program to RAM

using the LOAD command.

SAVING DATA TO EPROM

Additional data, such as strings and constants, can be

saved to the EPROM in U3. An external EPROM

programm er is used to sa ve data to the E PROM. Data

cannot be saved to U3 through CAM BASIC II.

Data is saved at the top of the EPROM memory. The

upper 2K bytes are always available as RAM memory

size absolutely limits the program to 30K.

If you need more than 2K bytes of data, you can save

data "on top" of the CAMBASIC II program in U3. A

good way to determ ine how m uch mem ory is available is

to perform a PRINT SYS(0) in the immediate mode

(program not running). Subtracting 31900 from the

number of bytes r eturned will tell you the app roxim ate

number of bytes available for data.

The best way to make sure your data will not write over

the program is to perform the following steps:

First, put a remark statement that you can recognize.

One suggestion is "End of the program". Next, save

your program to the EPROM using the CAMBASIC II

SAVE com mand.

Remove the EPROM and read it from your EPROM

programmer. Using your program mer, go into the mode

where you can examine data. Look for the remark

statement at the end of the program. Instruct the

programmer to put your data starting at the next even

page boundary (for example 5000H, 5100H, and so on).

COMMANDS

The following is a list of CAMBASIC II commands used

for saving and loading programs.

Command Function

LOAD Transferrs progr am from U3 to

RAM for editing or running.

SAVE Saves a program from RAM to

U3 for autorun.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 35 36

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