[atari7800] Re: Mode 160B don't works for me...

What assembler are you using? DASM doesn't understand

incbin  roguesword.bmp

Dan

> -----Original Message-----
> From: atari7800-bounce@xxxxxxxxxxxxx 
> [mailto:atari7800-bounce@xxxxxxxxxxxxx] On Behalf Of Manuel Rotschkar
> Sent: Sunday, October 31, 2004 7:41 AM
> To: atari7800@xxxxxxxxxxxxx
> Subject: [atari7800] Mode 160B don't works for me...
> 
> 
> Hi there!
> 
> Phew... I'm trying this for hours now, but I don't get to 
> display anything 
> in this mode. Meanwhile I tried so many things, actually by 
> pure accident 
> alone I should've managed to get at least some garbage 
> displayed on the 
> screen...
> 
> Ok, what did I do so far...
> 
> I wrote a program that strips of the header of a 16-color 
> windows Bitmap, 
> does the bitwise swapping of the 2-Bit pairs as described in the 7800 
> Guide.
> (First I'm changing the nibbles 4,8&12 to 13-14, leaving 0 as 
> transparent)
> 
> That results in a 16000 byte data block I simply include in 
> my source file.
> 
> My Code does this:
> - It writes %01000000 to the CRTL register
> - It writes dummy values to all color registers.
> - It sets the DLL pointer, then loops forever.
> 
> My DL entries look like this:
> 
> byte   $00,%11000000,$80,%10000001,0
> byte   $20,%11000000,$80,%10000001,64
> byte   $40,%11000000,$80,%10001001,128
> byte   $00,$00
> 
> I attached the full source and my converted bitmap. My last 
> hope is that 
> one of you will see what I'm doing wrong here...
> 
> Greetings,
>       Manuel
>

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