Help needed with High Score Cart

[PacManPlus]

Hello, I hope someone can help me.

 

I have been futzing around for almost a week trying to get a logo to show up on the high score cart. I thought I understood it well enough to implement it but I guess I was wrong.

 

Here is the code I have:

;  TEMPLATE FOR HSC TABLE
HSCTEMP  .byte	 $00,$00	;ID NUMBER AND TRAILING ZERO
	 .byte	 $00		;DIFFICULTY [7..2] AND PLAYER [1..0]
	 .byte	 $01		;CONTROLLER TYPE
	 .byte	 $00,$00	;WE USE THE LOGO
	 .byte	 <(HSCDIF),>(HSCDIF);POINTER TO DIFFICULTY NAME
	 .byte	 $00,$00	;POINTER TO SCORE
	 .byte	 <(HSCDLL),>(HSCDLL);POINTER TO DLL FOR LOGO
	 .byte	 <(HSCSOUND),>(HSCSOUND);POINTER TO SOUND ROUTINE
	 .byte	 $00		;TIME TO WAIT TILL RETURN

HSCDLL:
	.byte	   $0B,>(NULDLIST),<(NULDLIST);12 BLANK LINES
	.byte	   $0B,>(NULDLIST),<(NULDLIST);12 BLANK LINES
	.byte	   $0B,>(NULDLIST),<(NULDLIST);12 BLANK LINES
	.byte	   $05,>(HSCDL1),<(HSCDL1);5 LINES OF DLL FOR LOGO
	.byte	  $05,>(HSCDL2),<(HSCDL2)
	.byte	  $05,>(HSCDL3),<(HSCDL3)
	.byte	  $05,>(HSCDL4),<(HSCDL4)
	.byte	  $05,>(HSCDL5),<(HSCDL5)
	.byte	   $0B,>(NULDLIST),<(NULDLIST);12 BLANK LINES (SEPERATOR)
	.byte	  $00,$00,$00

; COPY HSCROM1,2,3,4 AND 5 TO HSCDL1,2,3,4 AND 5 IN RAM
HSCROM1:
	.byte   <(HSCSCR1),$60,>(HSCSCR1),$00+$04,$18;SCREEN - PLAY FIELD LINE 1
	.byte   $00,$00,$00
HSCROM2:
	.byte   <(HSCSCR2),$60,>(HSCSCR2),$00+$04,$18;SCREEN - PLAY FIELD LINE 2
	.byte   $00,$00,$00
HSCROM3:
	.byte   <(HSCSCR3),$60,>(HSCSCR3),$00+$04,$18;SCREEN - PLAY FIELD LINE 3
	.byte   $00,$00,$00
HSCROM4:
	.byte   <(HSCSCR4),$60,>(HSCSCR4),$00+$04,$18;SCREEN - PLAY FIELD LINE 4
	.byte   $00,$00,$00
HSCROM5:
	.byte   <(HSCSCR5),$60,>(HSCSCR5),$00+$04,$18;SCREEN - PLAY FIELD LINE 5
	.byte   $00,$00,$00

 

Here is the RAM section for HSCDL1-5:

HSCDL1	=	 $1AE0
HSCDL2	=	 $1AF0
HSCDL3	=	 $1B00
HSCDL4	=	 $1B10
HSCDL5	=	 $1B20

 

Here is where the Screen RAM is defined:

HSCSCR1   =	 $1A20
HSCSCR2   =	 $1A40
HSCSCR3   =	 $1A60
HSCSCR4   =	 $1A80
HSCSCR5   =	 $1AA0

 

hscdl1, hscdl2, hscdl3, hscdl4, and hscdl5 are in ram, and cleared out (zeroed) and an oval-shaped logo is put there via Character Mode. The problem I get is that I get all 'A's in the background ($00, which I'm using as the blank character, is 'A' in the HSC's alphabet). If you look carefully, you will see a 'garbage' oval where the logo should be. So I know it's partially right.

 

BTW, Asteroids uses the DLL in ROM for the HSC so I know that psrt of it is ok. I know the character mode is set right, because it works in-game.

 

Each Display List is 6 pixels high. I've studied Kenfused's example he gave me a while back. I understand what he did but for the life of me I can't understand why what I did isn't working. I've attached screen shots of what I see.

 

I hope someone can help. Thanks in advance.

 

Bob

Edited September 15, 2008 by PacManPlus

[+Allan]

Did you look at the Desert Falcon source code?

 

Allan

[PacManPlus]

Hey Allan:

 

I had looked at a few examples (DF included), and I figured out that I have to force a DLI at the top of the logo and replace the CHARMODE with the games'. I did see the logo after that, but, I started getting screen jumps in-game for some reason, and it didn't change back to the HSC's CharMode once the logo was finished.

 

I may just go back to using the TEXT version.

Edited September 15, 2008 by PacManPlus