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Trifox
Account closed
Registered: Mar 2006
Posts: 108 |
bitmap display/extraction
hi all, i have a severe problem, i have some pictures, they are mulcticolor only, so it should be easy to extract the image data from it, can anyone point me to a description of those .prg multicolor images?
btw. i have a font/charset ( 2x2) in png format, what is the easiest/fastest way to get a c64 charset from it? i would not like to write a converter for this .,..
can there be a program wich outputs the bytes (valued 0..3 so, to bits a pixel) only????
time is runing out... |
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Trifox
Account closed
Registered: Mar 2006
Posts: 108 |
hi, i stepped over this tool
PicChar v0.1
has anyone used it before ? how is the input format of this tool, there is no comment about accepted input formats, it seems that it rads just any type of file, but i am not sure in which format i have to use so that i can get what i want ... ;( |
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MRT
Account closed
Registered: Sep 2005
Posts: 149 |
POST FROM PRIVATE MESSAGE
>> Well..?
>> Did that solve your problem?
>>
>
> i am coming closer to what i want to achieve, the $d018 register reads value $19 so, what parts do i need to extract?
>
> $d018 has value $19
>
> so, screen mem is $0400 - $07f8 what data is stored there ? only color data ? that would explain why all have the same value ....
>
> but i am used to $18 value in register $d018 ...
He he... If you're busy with the chars, just see forum posts... It'll guide you...
Let me explain $d018:
bit 0: uppercase/lowercase charset
bit 1-3: charset/bitmap address
bit 4-7: charscreen address
The real possition in mem depends on the first two bits (0-1) of $dd00. This register is for the VIC bank...
possible VIC banks are:
$0000
$4000
$8000
$c000
Witin one of these VIC banks you'll find a charset/bitmap address:
bit 1-3:
000: VICBank + $0000
001: VICBank + $0800
010: VICBank + $1000
011: VICBank + $1800
100: VICBank + $2000
101: VICBank + $2800
110: VICBank + $3000
111: VICBank + $3800
Note: When used in a normal manner, bitmaps only use 000 ($0000) or 100 ($2000) to show bitmap data
Within the same manner you can use the bits 4-7 for calculating the charscreen address.
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MRT
Account closed
Registered: Sep 2005
Posts: 149 |
Quote: hi, i stepped over this tool
PicChar v0.1
has anyone used it before ? how is the input format of this tool, there is no comment about accepted input formats, it seems that it rads just any type of file, but i am not sure in which format i have to use so that i can get what i want ... ;(
NO, It's from Scout... Don't use it, or it'll blow up your computer... ;-)
:-D
No realy, Use that tool! It's sure easier than moving all char-parts by hand... If the tool can do 4x4 chars? |
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Scout
Registered: Dec 2002
Posts: 1568 |
Quote: NO, It's from Scout... Don't use it, or it'll blow up your computer... ;-)
:-D
No realy, Use that tool! It's sure easier than moving all char-parts by hand... If the tool can do 4x4 chars?
*BOOM!*
The program converts any hires screen into a charset.
Even more than 1 pic can be used.
Yay!
I also have an unreleased version of PicChar which makes it possible to create an inverse charset if needed (eor #$ff :).
Double yay!
Also, for the people who struggle with the d018/dd00 settings I recommend D018 Manager
---
8Bit Mayhem - The Commodore 64 Scenemusic Podcast
http://8bitmayhem.blogspot.com/ |
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enthusi
Registered: May 2004
Posts: 675 |
I recommend against it :)
Its not THAT hard and starting with tools you will always think of $d018 as an evil dark corner... |
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Trifox
Account closed
Registered: Mar 2006
Posts: 108 |
anyhow i do it i just get crapp ... uaaaaaaaaaargh, but now i have some time ( 24 hours left till deadline ) to convert this picture into a charset .... |
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Trifox
Account closed
Registered: Mar 2006
Posts: 108 |
http://www.fractalmovies.com/c64/screenshot.gif
this is what it looks like when i load the char data ... why the hell are some of the characters inverted, while some arent ?!?!?!? |
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Tch
Account closed
Registered: Sep 2004
Posts: 512 |
Quote: anyhow i do it i just get crapp ... uaaaaaaaaaargh, but now i have some time ( 24 hours left till deadline ) to convert this picture into a charset ....
Yoh Trifox,why not rip another 2x2 somewhere.
Will save you lots of time and then figure it out without a deadline.
C64+Deadline is BAD!! ;) |
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Scout
Registered: Dec 2002
Posts: 1568 |
Quote: http://www.fractalmovies.com/c64/screenshot.gif
this is what it looks like when i load the char data ... why the hell are some of the characters inverted, while some arent ?!?!?!?
Seems your original pic is fucked up.
---
8Bit Mayhem - The Commodore 64 Scenemusic Podcast
http://8bitmayhem.blogspot.com/ |
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Trifox
Account closed
Registered: Mar 2006
Posts: 108 |
so, what makes a picture fuck up ? congo ? |
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