why why why do I get all those problems, please help me !!
I´m using emulators (rumsx and nlmsx), and whenever I reset I choose a hard reset to clear all the ram.
The emulator I use is: Wbass
The problems which overcome me:

ORG $C000
ld a,4
ld b,a
end

go $c000
register fout

why must this extremely simple programm bug me with this error?

org $c000
ld a,"B"
call $a2
end

go $c000
B

this one works, yeah !! output

org $c000
ld a,"B"
call $a2
ld a,"C"
call $a2
end

go $c000
Waarde te groot of te klein

this one doesn´t, por que ???

org $c000
ld a,"B"
ld (som),a
som: defb 00
end

go $c000

Yes, this one gives me no problems, but the next one is practicly
the same:

org $c000
ld a,"B"
ld (som),a
som: defb 00
ld a,"C"
end

go $c000
Operand fout

I can´t seem to see the problem here......

org $c000
ld a,"B"
ld (som),a
ld a,"C"
som: defb 00
end

go $c000
Operand fout

Who´s playing tricks here, the assembler, the emulator or the
programm?

org $c000
ld a,"B"
end

go $c000
Operand fout

I´m going crazy !!!!!

org $c000
ld a,"B"
ld b,a
end

go $c000
Register fout

this one is the same as the one before but gives a different type
of error..... any one knows how come?

org $c000
ld a,"B"
ld b,a
ld a,"C"
end

go $c000

and this one is also the same, but gives no errors !!!!!

All the help is welcome.......

Any routine should have a RET (the line before END) when you want to return to the assembler after your code was executed.

INCREDIBLE !!!

I started about half a year ago with assemble and kept on bouncing on these problems..... I studied material and studied and studied.
Even bought books about learning assembly and still I got these problems
untill now.

Such a stupidly simple sollution.

adding RET at the end before END::::::!!!!! ::::))))

thnkUsomutsj !!!

btw, in this example:

org $c000
ld a,"B"
ld (som),a
ld a,"C"
som: defb 00
end

you should place the ret before the "som: defb 00", else it will be executed.

I'll show you your first assembly 'trick' by the way... Normally, you need to end each program with a RETurn, right? So that would be:

LD   A,"H"
CALL $A2
LD   A,"I"
CALL $A2
LD   A,"!"
CALL $A2
RET

But, and this is your first little trick, normally you can almost always replace a CALL followed immediately by a RET with a single JP (jump) without the RET. So that would be:

LD   A,"H"
CALL $A2
LD   A,"I"
CALL $A2
LD   A,"!"
JP   $A2

Now ain't that cool?

Nice one for newbies, Sonic.

norakomi: why not join the #msxdev channel on the Rizon IRC network... Many coders are ready to help out with any of your coding-related problems.

Quote:

Nice one for newbies, Sonic.

I remember it was the very first 'trick' I learned... ^_^ Made me so happy, "look ma! I saved a byte!!!"

boh...

ld a,0 vs. xor a

or a/and a instead of cp 0

idd, those two came before OUTI.... I can't believe I forgot those!