Commodore 64 Manual de usuario descargar pdf (Pagina 5)

Where" A" has one of the following values:

'Remember that the BANK ADDRESS of the VIC-II chip must be added in.

You must also tell the KERNAL'Sscreen editor where the screen is as follows: POKE

648, page (where page = address/256, e.g., 1024/256= 4, so POKE 648,4).

COLOR MEMORY

Color memory can NOTmove. It is always located at locations 55296

($D800)

through 56295 ($DBE7). Screen memory (the 1000 locations

starting at 1024) and color memory are used differently in the different

graphics modes. A picture created in one mode will often look com-

pletely different when displayed in another graphics mode.

CHARACTER MEMORY

Exactly where the VIC-II gets it character information is important to

graphic programming. Normally, the chip gets the shapes of the char-

acters you want to be displayed from the CHARACTERGENERATOR

ROM. In this chip are stored the patterns which make up the various

letters, numbers, punctuation symbols, and the other things that you see

PROGRAMMING GRAPHICS 103

LOCATION*

BITS

DECIMAL HEX

OOOOXXXX 0

$0000

0001 XXXX

1024

$0400

(DEFAULT)

32 0010XXXX 2048

$0800

0011XXXX

3072

$OCOO

64 0100XXXX 4096 $1000

80 0101XXXX

5120

$1400

96 0110XXXX

6144

$1800

112

0111XXXX

7168

$lCOO

128

1000XXXX 8192 $2000

144

1001XXXX

9216

$2400

160 1010XXXX

10240

$2800

176 1011XXXX

11264 $2COO

192 1100XXXX

12288 $3000

208 1101XXXX

13312 $3400

224

1110XXXX

14336 $3800

240

1111 XXXX

15360

$3COO.

1 2 3 4 5 6 7 8 9 10 ... 82 83

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Commodore 64 Manual de usuario Pagina 5

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