Remote-processing RPC-210 Manuel d'utilisateur télécharger pdf (Page 27)

RAM BASIC SECTION 5

Page 5-2

For this example, suppose there are 20 of these arrays

that need to be set up. A program fragment is as

follows:

100 STRING 400,20 Initialize 20 string arrays

300 NO = 12 Element to fill

310 CF = 23.432 Correction factor

320 JC = JC + 1 Job counter

330 AC = 25 Analog offset

350 GOSUB 1000

500 NO = 5 Element to retrieve

510 GOSUB 2000 Retrieve variables

This subroutine stores variables CF, JC, A C, and string

$(1) into an array starting in segment 1, address 0.

1000 POKEB1,30*NO, JC

1010 POKEW1,30*NO+ 1,AC

1020 POKEF1,30*NO+ 3,CF

1030 POKE$1, 30*NO+ 9,$(1)

1040 RETURN

Subroutine 2000 - 2040 retrieves data into variables CF,

JC and AC.

2000 JC = PEEKB(1,30*NO)

2010 AC = PEEKW (1,30*NO+ 1)

2020 CF = PEEKF (1,30*NO+ 3)

2030 $(1) = PEEK$(1, 30*NO+ 9)

2040 RETURN

You can store and retrieve strings and other kinds of

variables in this way. There are many variations of

PEEK and POKE statements. Refer to the RPBASIC-52

Software Supplement in this manual for additional

information and examples. A list of commands appears

at the end of this section.

RESERVED MEMORY

Generally, writing to RAM segment 0 should be

avoided.

The upper 256 bytes of RAM in segment 0 are set aside

for system use and should not be used to POKE

variables. Avoid writing to addre sses 0FF 00H to

0FFFFH, especially when writing to Flash EPROM.

Program s and RPBASIC-52 variables reside in segment

0. Writing to them could corrupt the program and/ or

variable data.

Data using PEE K and PO KE com mands are generally

stored in segment 1 to 7 (a segment is 64K of memory).

COMMANDS

The following is a list of RPBASIC-52 commands used

with RAM and Flash EPROM.

Command Format

BLOAD Transfers data from EPROM to RAM

BSAVE Transfers data from RAM to EPROM

CALL Calls an assembly language routine

PEEK B Returns a byte

PEEK F Returns a floating point number

PEEK W Returns a 16 bit number

PEEK $ Returns a string

POKE B Stores a byte to RAM

POKE F Stores a floating point number to

RAM

POKE W Stores a16 bit number to RAM

POKE $ Stores a string to RAM

XBY Reads or writes external mem ory,

segment only.

NOTE: Futur e version (Perhaps starting in 2012) will

have an enhanded BSAVE command. The

newer BSAVE com mand will have an erase

flash sector capability. Contact R emote

Processing for mor e information.

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Remote-processing RPC-210 Manuel d'utilisateur Page 27

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