Help with Assembler

[redblade]

Hi.

I'm using AsmOne and slowly porting some of the RKM 1.3 to assembler. But with the intuition.

I'm having trouble trying to put the nw_Flags on one line in assembler. Is it possible to write one line over two lines? How do I do that?

The alternative is that I splite the the two lines into a routine which adds one line, loads the newwindow memory pointer to a register then copies it to the nw_Flags offset.

Would prefer to just split it over two lines.

Thanks in advance.

[StingRay]

Originally Posted by redblade

I'm having trouble trying to put the nw_Flags on one line in assembler. Is it possible to write one line over two lines? How do I do that?

This is not possible. You could define the NW Flags like this though:

NW_FLAGS = FLAG1|FLAG2|FLAG3

and then just use "move.l #NW_FLAGS,d0" f.e.

Here's an example from one of my WHDLoad slaves:

FLAGS		= WHDLF_NoError|WHDLF_EmulTrap
DEBUGKEY	= $58		; F9
QUITKEY		= $46		; DEL
DEBUG

; absolute skip
PL_SA	MACRO
	PL_S	\1,\2-(\1)
	ENDM


HEADER	SLAVE_HEADER		; ws_security + ws_ID
	dc.w	10		; ws_version
	dc.w	FLAGS		; flags
	dc.l	524288*2		; ws_BaseMemSize
	dc.l	0		; ws_ExecInstall
	dc.w	Patch-HEADER	; ws_GameLoader
	IFD	DEBUG
	dc.w	.dir-HEADER	; ws_CurrentDir
	ELSE
	dc.w	0		; ws_CurrentDir
	ENDC
	dc.w	0		; ws_DontCache
	dc.b	0		; ws_KeyDebug
	dc.b	QUITKEY		; ws_KeyExit
	dc.l	524288		; ws_ExpMem
	dc.w	.name-HEADER	; ws_name
	dc.w	.copy-HEADER	; ws_copy
	dc.w	.info-HEADER	; ws_info

[redblade]

Cheers StingRay, came up with that solution while at work. Will be useful .

So there is no assembler that lets you use more than one line for for one line of code?

[cosmicfrog]

just to satisfy my idle curiosity whats the longest line you can have ?

[Leffmann]

Originally Posted by cosmicfrog

just to satisfy my idle curiosity whats the longest line you can have ?

Both ASM-One and vasm can handle at least 1000 chars per line, and most likely any length since it's easier to just skip over carriage return/new line chars rather than lift out individual lines for parsing, but many people seem to still adhere to formatting their code in 80 chars or less per line.

EDIT: vasm also supports backslash line breaks

[cosmicfrog]

Thats what I was thinking aswell, Thanks Leffmann

[phx]

Originally Posted by Leffmann

Both ASM-One and vasm can handle at least 1000 chars per line, and most likely any length since it's easier to just skip over carriage return/new line chars rather than lift out individual lines for parsing,

True. There is no length limitation.

but many people seem to still adhere to formatting their code in 80 chars or less per line.

That's for a reason! You can expect that all people have at least a 80 columns console available. But exceeding this limitation might force you to scroll around, and the longer the lines the more it decreases readability of the source.

I think that 80 is a very sensible limitation which everybody should comply.

EDIT: vasm also supports backslash line breaks

Really? I didn't even implement it...

[redblade]

Yep I stick to 80 columns for my asm source.

[cosmicfrog]

great that you put readability over functionality

but I do understand why you do it