Remote-processing RPC-150 Manuale Utente Scaricare il pdf (Pagina 11)

CHAPTER 3 SAVING PROGRAMS

RPC-150 Page 9

especially true if the program has been configured to

ignore the < ESC> key.

To prevent autorun, remove jumper W1[17-18].

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 A 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.

To modify a program before running it on power up,

remove jumper W1[17-18] first. Power up or r eset the

card. Re-install jumper W1[17-18]. Type load. You

can now list the program and otherwise make

modifications.

SAVING DATA TO EPROM

Additional data, such as strings and constants, can be

saved to the EPRO M in U 3. A n externa l progr ammer is

used to save data to the EPROM. Data cannot be saved

to U3 through CAMBASIC.

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 program in U 3. 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 roximate

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 is "end of program ". Next, save your progr am to

the EPROM using the CAMBASIC 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).

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 25 26

Commenti su questo manuale

Nessun commento

Remote-processing RPC-150 Manuale Utente Pagina 11

Commenti su questo manuale

Prodotti e manuali riguardandi Computer Remote-processing RPC-150