5 replies to this topic

[Pantherman]

I enter this code as descreibed in the tutorial:

; 192 scanlines of picture...
ldx #0
ldy #0
REPEAT 192 ; scanlines
inx
stx COLUBK
nop
nop
nop
dey
sty COLUBK
sta WSYNC
REPEND


I entered it (including the indentation) (Seems that the post doesn't want to keep the indentation that I gave it) and I tried everything including including processor 6502 and the include "marco.h" and include "vcs.h"

and the dasm goes through 3 passes, each time saying that there is 1 event that requires another assembler pass, with obscure reason to be documented later. Howerver at the end of the 3rd pass it claims a Fatal assembley error: Source is not resolvable.

What am I doing wrong?

[Thomas Jentzsch]

The code looks ok (though you should use

...

to keep the spaces), maybe the order of the include files is a problem(vcs.h should be the 1st one).

If that doesn't help, post the source code file(s).

[Pantherman]

Ok, here it is

  processor 6502

  include "vcs.h"

  include "macro.h"



; 192 scanlines of picture...

 ldx #0

 ldy #0

 REPEAT 192; scanlines

  inx

  stx COLUBK

  nop

  nop

  nop

  dey

  sty COLUBK

  sta WSYNC

 REPEND

I have included the files vcs.h and marco.h as a ZIP

Attached Files

•  vcsandmarco.zip   4.24K   79 downloads

[Serguei2]

I got

Quote

Fatal assembly error: Source is not resolvable.

when trying to compile.


Serguei

[Cybergoth]

Hi there!

  processor 6502

  include "vcs.h"

  include "macro.h"



; 192 scanlines of picture...

 ldx #0

 ldy #0

 REPEAT 192; scanlines

  inx

  stx COLUBK

  nop

  nop

  nop

  dey

  sty COLUBK

  sta WSYNC

 REPEND

The first ldx/ldy need to be tabed. At the beginning of the line(as is), they'll be misinterpreted as labels.
The whole rest of the kernel is missing, you need to do a complete TV frame, this snippet does only the visible part of the screen.
And finally, with this REPEAT/REPEND you're wasting 192*X bytes, so you shouldn't experiment too much here...

Greetings,
Manuel

[Cybergoth]

Hi there!

Serguei2 said:

I got

Quote

Fatal assembly error: Source is not resolvable.

when trying to compile.

Fine. That's exactly what he said it does.

Greetings,
Manuel