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Aufgabe des Farbram und $d020 im hochauflösenden Bitmap Modus?

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internium

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Wednesday, April 18th 2012, 6:09pm

Aufgabe des Farbram und $d020 im hochauflösenden Bitmap Modus?

Hi,

hat das Farbram im hochauflösenden Bitmapmodus überhaupt eine Funktion? Vorder- und Hintergrundfarbe der 8x8 Blöcke werden doch aus dem Low- und Highnibble des Videorams gelesen, oder? Also, hat das Farbram und auch das Hintergrundfarbregister $d020 in diesem Modus keine Funktion?
Meine Jugendsünden auf dem Amiga wieder gefunden...shame on me.

Fröhn

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Wednesday, April 18th 2012, 6:51pm

Quoted from "internium"

Hi,

hat das Farbram im hochauflösenden Bitmapmodus überhaupt eine Funktion? Vorder- und Hintergrundfarbe der 8x8 Blöcke werden doch aus dem Low- und Highnibble des Videorams gelesen, oder? Also, hat das Farbram und auch das Hintergrundfarbregister $d020 in diesem Modus keine Funktion?

Nein, das wird gelesen aber ignoriert. Nur wenn man innerhalb einer Zeichenzeile in einen anderen Modus wechselt, könnte man die Farben sehen.

spider-j

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Wednesday, April 18th 2012, 7:05pm

äh, hier ist doch wohl eher $d021 gemeint, oder?

internium

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Wednesday, April 18th 2012, 7:12pm

Ähm ja sorry, ich meinte $d021 und nicht die Bordercolor.
Meine Jugendsünden auf dem Amiga wieder gefunden...shame on me.

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Wednesday, April 18th 2012, 8:42pm

Hihihih, passiert mir auch dauernd :)

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Wednesday, April 18th 2012, 8:49pm

Ich habe eine Tabelle gefunden die erklärt was der VIC in welchem Modus woher holt wenn es um die Farben geht:

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 +---------------+----------------------------------------------------------+
 | Charset-Hires |  0 = Background ($D021)      1 = Color-RAM               |
 +---------------+----------------------------------------------------------+
 | Charset-MC    | 00 = Background ($D021)     01 = MC-Color1 ($D022)       |
 |               | 10 = MC-Color2  ($D023)     11 = Color-RAM               |
 +---------------+----------------------------------------------------------+
 | Bitmap-Hires  |  0 = LN Screen-RAM           1 = HN Screen-RAM           |
 +---------------+----------------------------------------------------------+
 | Bitmap-MC     | 00 = Background ($D021)     01 = HN Screen-RAM           |
 |               | 10 = LN Screen-RAM          11 = Color-RAM               |
 +---------------+----------------------------------------------------------+
 | Sprite-Hires  |  0 = Background ($D021)      1 = Sprite-Color ($D027..)  |
 +---------------+----------------------------------------------------------+
 | Sprite-MC     | 00 = Background ($D021)     01 = Sprite-MC-Color1 ($D025)|
 |               | 10 = Sprite-Color ($D027..) 11 = Sprite-MC-Color2 ($D026)|
 +---------------+----------------------------------------------------------+

  LN = Low-Nybble ; HN = High-Nybble


Quelle: All_About_Your_64-Online Help V0.64

internium

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Wednesday, April 18th 2012, 9:02pm

Fehlt der ECM TextModus, aber sonst sehr übersichtlich danke.
Meine Jugendsünden auf dem Amiga wieder gefunden...shame on me.

Gerrit

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Wednesday, April 18th 2012, 9:15pm

Häng diesen Modus an die Tabelle ran damit sie vollständig ist. :)

internium

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Saturday, April 21st 2012, 7:06pm

Ich habe mal den ECM mit hinzugefügt:

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 +---------------+----------------------------------------------------------+
 | Charset-Hires |  0 = Background ($D021)      1 = Color-RAM               |
 +---------------+----------------------------------------------------------+
 | Charset-MC    | 00 = Background ($D021)     01 = MC-Color1 ($D022)       |
 |               | 10 = MC-Color2  ($D023)     11 = Color-RAM               |
 +---------------+----------------------------------------------------------+
 | Charset-ECM   |  0 = Bit 6 and 7 of Screen-RAM choose BG-Color           |
 |               |    00 = Background ($D021)     01 = Background ($D022)   |
 |		 |    10 = Background ($D023)     11 = Background ($D024)   |
 |		 |                                                          |
 |		 |  1 = Color-RAM                                           |
 |		 |                                                          |
 |		 | Note: Only 64 chars possible                             | 
 +---------------+----------------------------------------------------------+
 | Bitmap-Hires  |  0 = LN Screen-RAM           1 = HN Screen-RAM           |
 +---------------+----------------------------------------------------------+
 | Bitmap-MC     | 00 = Background ($D021)     01 = HN Screen-RAM           |
 |               | 10 = LN Screen-RAM          11 = Color-RAM               |
 +---------------+----------------------------------------------------------+
 | Sprite-Hires  |  0 = Background ($D021)      1 = Sprite-Color ($D027..)  |
 +---------------+----------------------------------------------------------+
 | Sprite-MC     | 00 = Background ($D021)     01 = Sprite-MC-Color1 ($D025)|
 |               | 10 = Sprite-Color ($D027..) 11 = Sprite-MC-Color2 ($D026)|
 +---------------+----------------------------------------------------------+

  LN = Low-Nybble ; HN = High-Nybble
Meine Jugendsünden auf dem Amiga wieder gefunden...shame on me.

enthusi

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Saturday, April 21st 2012, 8:22pm

11 = Color-RAM bei Charset-MC ist aber mitunter Erklaerungsbeduerftig.
Es geht schliesslich nur um bit 0-2 (also nur Farben 0-7) fuer die Farbwahl, bit 3 legt fest ob der entsprechende char HiRes oder eben MC dargstellt wird.

internium

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Saturday, April 21st 2012, 8:51pm

Charset-MC hatte ich mir gar nicht so genau augeschaut, aber du hast Recht, hier mein Vorschlag für eine Erweiterung:

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 +---------------+----------------------------------------------------------+
 | Charset-Hires |  0 = Background ($D021)      1 = Color-RAM               |
 +---------------+----------------------------------------------------------+
 | Charset-MC    | 00 = Background ($D021)     01 = MC-Color1 ($D022)       |
 |               | 10 = MC-Color2  ($D023)     11 = Color-RAM               |
 |               |                                                          |
 |               | Note: You can only choose color 0-7 in Color-RAM, cause  |
 |               |       the 4th bit is using for Hires/MC-Switch           |
 +---------------+----------------------------------------------------------+
 | Charset-ECM   |  0 = Bit 6 and 7 of Screen-RAM choose BG-Color           |
 |               |    00 = Background ($D021)     01 = Background ($D022)   |
 |               |    10 = Background ($D023)     11 = Background ($D024)   |
 |               |                                                          |
 |               |  1 = Color-RAM                                           |
 |               |                                                          |
 |               | Note: Only 64 chars possible                             |
 +---------------+----------------------------------------------------------+
 | Bitmap-Hires  |  0 = LN Screen-RAM           1 = HN Screen-RAM           |
 +---------------+----------------------------------------------------------+
 | Bitmap-MC     | 00 = Background ($D021)     01 = HN Screen-RAM           |
 |               | 10 = LN Screen-RAM          11 = Color-RAM               |
 +---------------+----------------------------------------------------------+
 | Sprite-Hires  |  0 = Background ($D021)      1 = Sprite-Color ($D027..)  |
 +---------------+----------------------------------------------------------+
 | Sprite-MC     | 00 = Background ($D021)     01 = Sprite-MC-Color1 ($D025)|
 |               | 10 = Sprite-Color ($D027..) 11 = Sprite-MC-Color2 ($D026)|
 +---------------+----------------------------------------------------------+

  LN = Low-Nybble ; HN = High-Nybble
Meine Jugendsünden auf dem Amiga wieder gefunden...shame on me.

peiselulli

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Saturday, April 21st 2012, 11:03pm

Lass mal das $d021 bei den beiden Sprites-Backgrounds weg, das ist da falsch ...

enthusi

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Saturday, April 21st 2012, 11:03pm

und 01 ist aus Sicht der Sprites ebenfalls Background ;-)

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