DEFINE RESET_ORG and DEC modifier issue

[marcick]

Hi all,

In the code below I use a simple DEC modifier to output a string and it works as expected.

But If I use "DEFINE RESET_ORG 1EC00h"

it doesn't work and the devices seems to reset continuously.

How is it possible ?

 
DEFINE OSC 8
DEFINE HSER2_RCSTA 90H
DEFINE HSER2_TXSTA 24H
DEFINE HSER2_BAUD 19200
DEFINE HSER2_CLROERR 1
CLEAR
OSCCON =100000 ; Primary oscillator, internal 8MHz OSCCON2.0 =1
OSCTUNE.7 =1
Adr VAR WORD
loop1:
FOR Adr=1000 TO 1005
     HSEROUT2 ["test1: ",13,10] ' -->>>> this works always         
     HSEROUT2 ["test2: ", DEC4 Adr,13,10] ' -->>>> this works only if I comment the first line "DEFINE RESET_ORG 1EC00h"
NEXT Adr
PAUSE 1000
CLEARWDT
goto loop1

[mpgmike]

I never tried referring to hex with an "H" suffix in PBP. I always used $1EC00. Not that I think that's your issue,...

[marcick]

Hi,
looks like that directive must be written that way. If I try with "$1Ec00" I obtain this error

PICBASIC PRO(TM) Compiler 3.1.3.4, (c) 1997, 2020 ME Labs, Inc.
All Rights Reserved.
Error[107] D:\PBP3_1\PBPPIC18.LIB 1229 : Illegal digit (E in decimal)
Error[107] D:\PBP3_1\PBPPIC18.LIB 1229 : Illegal digit (C in decimal)
Error[112] D:\PBP3_1\PBPPIC18.LIB 1229 : Missing operator
Error[107] D:\PBP3_1\PBPPIC18.LIB 1229 : Illegal digit (E in decimal)
Error[107] D:\PBP3_1\PBPPIC18.LIB 1229 : Illegal digit (C in decimal)
Error[112] D:\PBP3_1\PBPPIC18.LIB 1229 : Missing operator

[marcick]

Edit: I'm trying to write the address in decimal. With address below 65536 (let's say "DEFINE RESET_ORG 60000") it works, but over (let's say 65536) it fails.
Also using PBP Long setting.

Above 64K it works only removing the line with DEC modifier:

 FOR Adr=1000 TO 1005
HSEROUT2 ["test1: ",13,10] ' -->>>> this works always
' HSEROUT2 ["test2: ", DEC4 Adr,13,10] ' -->>>> this works only if you comment the first line "DEFINE RESET_ORG 1EC00h"
NEXT Adr
PAUSE 1000
CLEARWDT
goto loop1

[Charles Leo]

I'm afraid this is a limitation of PBP that probably won't be changed. The library routines (assembly language for high-level commands like HSEROUT) were written with the assumption that they would be in memory below 64K. They are the first thing placed after the RESET_ORG address. When I tested a variant of your code, the maximum address that could be safely defined was 0FFE4h. That limit will move down every time you use a new high level command which triggers a library inclusion.

I don't think this has ever come up before. Would you share some details about what you need to accomplish? If you'd rather do so in email, it's [email protected].

[marcick]

Thanks Charles, I'll email you and explain what I'm doing.