Override Default Settings

[Andrew Jameson]

I prefer that my source code documents all of the required PIC register configurations - really just to make the code readable / understandable. I could just add additional comments to include GCBasic's initialisation settings but I'd prefer to override them so that I know that I've not missed a specific register configuration.

I can override / overload InitSys :
sub INITSYS
end sub

but this still leaves :

;Start of program memory page 0
ORG 58
BASPROGRAMSTART
;Call initialisation routines
;Enable interrupts
bsf INTCON,GIE
bsf INTCON,PEIE
;Automatic pin direction setting
banksel TRISA
bcf TRISA,5
bcf TRISA,4
bsf TRISA,3
bcf TRISA,0

Anyway that I can override these chunks of code that I don't need ?
(Still using 0.98.06 2019-06-12 (Windows 32 bit))

Thanks,

Andrew

[Anobium]

I would need to see you method of overriding (and why).

[Andrew Jameson]

The final source code should be readable and complete ... it should provide all that is needed by another developer and fairly independent of compiler. Yes embedded subroutines remain hidden but, as with Basic language itself, the code will remain clear - Wait 2 mS for example is obvious.

Any PIC register configurations must be explained - get these wrong and you end up lost like I was when I migrated from a 12F683 to a 16F18313 and mistakenly expected that the CCP peripheral would, by default, be connected to GP2 / RA2 - felt like trying to open a combination lock !

So I like my documentation to have a register initialisation section that explains exactly all configuration settings.

The subroutine InitSys configures the clock, ADC, comparator and ports and I found that I can just add and overload the existing InitSys by adding the code :

sub INITSYS
end sub

The only remaining piece that I can not override is the inline configuration that immediately follows BASPROGRAMSTART.

The other thing is that some code associated with the configuration becomes redundant - in InitSys TRIS settings are made that I will / might configure to meet my requirement.

Andrew

[Anobium]

See the principles for Great Cow BASIC. The ease of use hiding all that complexity.

Get onto the new toolchain and there is a way I can share to take total control. Yes, it has its risks hence it is undocumented.

The latest tool is available on SoucrForge. If you want to stay with the Legacy IDE then I will put you in touch with Angle as he is now ready to release a Legacy IDE with the GCStudio front end (for updates only).. this will take you directly to SynWrite.

[Andrew Jameson]

Thanks for your time - just thoughts and no real problems - just discussion. Yes I fully understand the principles of keeping things simple but there's a purist lurking within me.

I stay with what works too and never moved on from Delphi 5 - all my development and OpenGL games still use it - because it works for me !

Cheers,

Andrew

Many thanks again for producing such a great product with amazingly responsive support !

[Anobium]

Love the video.

Thank you for your nice words. :-)

---

When you get onto the new compiler then I will create a video to document the hidden secret.

[Anobium]

Andrew... this was bugging me.

So, here is GCB and ASM. New compiler with no tweaks. It will do as wish - I think.

GCB - I added the #option Bootloader 53 because I have assumed you are doing something in that memory area. I just noticed ORG 58 in your code segment.

So, I think the upgraade may help you.

Evan

CGB

#CHIP 12F683
#option Bootloader 53

sub initsys
end sub

ASM

;Program compiled by Great Cow BASIC (1.00.00 2023-01-26 (Windows 64 bit) : Build 1215) for Microchip MPASM/MPLAB-X Assembler using FreeBASIC 1.07.1/2023-02-02 CRC64
;Need help? 
;  See the GCBASIC forums at http://sourceforge.net/projects/gcbasic/forums,
;  Check the documentation and Help at http://gcbasic.sourceforge.net/help/,
;or, email us:
;   w_cholmondeley at users dot sourceforge dot net
;   evanvennn at users dot sourceforge dot net
;********************************************************************************
;Set up the assembler options (Chip type, clock source, other bits and pieces)
 LIST p=12F683, r=DEC
#include <P12F683.inc>
 __CONFIG _FCMEN_ON & _CPD_OFF & _CP_OFF & _MCLRE_OFF & _WDTE_OFF & _INTRC_OSC_NOCLKOUT
;********************************************************************************
;Vectors
    ORG 53
    pagesel BASPROGRAMSTART
    goto    BASPROGRAMSTART
    ORG 57
    retfie
;********************************************************************************
;Start of program memory page 0
    ORG 58
BASPROGRAMSTART
;Call initialisation routines
;Start of the main program
BASPROGRAMEND
    sleep
    goto    BASPROGRAMEND
;********************************************************************************
INITSYS1
    return
;********************************************************************************
 END

[Andrew Jameson]

Thanks for that - upgrading this week, I think !

Andrew