Control Page: Difference between revisions

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Line 42: Line 42:
|-
|-
! 8x  
! 8x  
| class="scroll_x0" title="$0280 - X Scroll (BG0) [Low]" | W  
| class="scroll0" title="$0280 - X Scroll (BG0) [Low]" | W  
| class="scroll_x0" title="$0281 - X Scroll (BG0) [High]" | W  
| class="scroll0" title="$0281 - X Scroll (BG0) [High]" | W  
| class="scroll_y0" title="$0282 - Y Scroll (BG0) [Low]" | W  
| class="scroll0" title="$0282 - Y Scroll (BG0) [Low]" | W  
| class="scroll_y0" title="$0283 - Y Scroll (BG0) [High]" | W  
| class="scroll0" title="$0283 - Y Scroll (BG0) [High]" | W  
| class="scroll_x1" title="$0284 - X Scroll (BG1) [Low]" | W  
| class="scroll1" title="$0284 - X Scroll (BG1) [Low]" | W  
| class="scroll_x1" title="$0285 - X Scroll (BG1) [High]" | W  
| class="scroll1" title="$0285 - X Scroll (BG1) [High]" | W  
| class="scroll_y1" title="$0286 - Y Scroll (BG1) [Low]" | W  
| class="scroll1" title="$0286 - Y Scroll (BG1) [Low]" | W  
| class="scroll_y1" title="$0287 - Y Scroll (BG1) [High]" | W  
| class="scroll1" title="$0287 - Y Scroll (BG1) [High]" | W  
| class="scroll_x2" title="$0288 - X Scroll (BG2) [Low]" | W  
| class="scroll2" title="$0288 - X Scroll (BG2) [Low]" | W  
| class="scroll_x2" title="$0289 - X Scroll (BG2) [High]" | W  
| class="scroll2" title="$0289 - X Scroll (BG2) [High]" | W  
| class="scroll_y2" title="$028A - Y Scroll (BG2) [Low]" | W  
| class="scroll2" title="$028A - Y Scroll (BG2) [Low]" | W  
| class="scroll_y2" title="$028B - Y Scroll (BG2) [High]" | W  
| class="scroll2" title="$028B - Y Scroll (BG2) [High]" | W  
| class="scroll_x3" title="$028C - X Scroll (BG3) [Low]" | W  
| class="scroll3" title="$028C - X Scroll (BG3) [Low]" | W  
| class="scroll_x3" title="$028D - X Scroll (BG3) [High]" | W  
| class="scroll3" title="$028D - X Scroll (BG3) [High]" | W  
| class="scroll_x3" title="$028E - Y Scroll (BG3) [Low]" | W  
| class="scroll3" title="$028E - Y Scroll (BG3) [Low]" | W  
| class="scroll_x3" title="$028F - Y Scroll (BG3) [High]" | W  
| class="scroll3" title="$028F - Y Scroll (BG3) [High]" | W  
|-
|-
! 9x  
! 9x  
Line 65: Line 65:
| class="select_name_table" title="$0298 - Name Table Select" | W  
| class="select_name_table" title="$0298 - Name Table Select" | W  
| - || - || - || - || -  
| - || - || - || - || -  
| class="select_tileset_read" title="$0298E - Tileset Read Select" | W  
| class="select_tileset_read" title="$0298E - Tileset Render Select" | W  
| class="select_tileset_write" title="$0298F - Tileset Write Select" | W
| class="select_tileset_write" title="$0298F - Tileset Write Select" | W
|-
|-
Line 155: Line 155:
| $0207 || [[Register - High ROM Select|High ROM Select]]
| $0207 || [[Register - High ROM Select|High ROM Select]]
|-
|-
| class="scroll_x0" |  
| class="scroll0" |  
| $0280 - $0281 || [[Register - Scroll|X Scroll]] (BG0)
| $0280 - $0283 || [[Register - Scroll|Scroll Register]] (BG0)
|-
|-
| class="scroll_y0" |  
| class="scroll1" |  
| $0282 - $0283 || [[Register - Scroll|Y Scroll]] (BG0)
| $0284 - $0287 || [[Register - Scroll|Scroll Register]] (BG1)
|-
|-
| class="scroll_x1" |  
| class="scroll2" |  
| $0284 - $0285 || [[Register - Scroll|X Scroll]] (BG1)
| $0288 - $028B || [[Register - Scroll|Scroll Register]] (BG2)
|-
|-
| class="scroll_y1" |
| class="scroll3" |  
| $0286 - $0287 || [[Register - Scroll|Y Scroll]] (BG1)
| $028C - $028F || [[Register - Scroll|Scroll Register]] (BG3)
|-
| class="scroll_x2" |
| $0288 - $0289 || [[Register - Scroll|X Scroll]] (BG2)
|-
| class="scroll_y2" |
| $028A - $028B || [[Register - Scroll|Y Scroll]] (BG2)
|-
| class="scroll_x3" |  
| $028C - $028D || [[Register - Scroll|X Scroll]] (BG3)
|-
| class="scroll_y3" |
| $028E - $028F || [[Register - Scroll|Y Scroll]] (BG3)
|-
|-
| class="fixed_regions_top_bottom" |  
| class="fixed_regions_top_bottom" |  
Line 189: Line 177:
|-
|-
| class="select_tileset_read" |  
| class="select_tileset_read" |  
| $029E || [[Register - Tileset Select|Tileset Read Select]]
| $029E || [[Register - Tileset Select|Tileset Render Select]]
|-
|-
| class="select_tileset_write" |  
| class="select_tileset_write" |  

Latest revision as of 20:00, 28 August 2024

The Control Page is a page of memory that is devoted to connecting to other parts of NerdConsole. All of the other systems that can be addressed are collected in the Control Page to ensure the maximum amount of contiguous available memory. The Control Page gives access to the controllers, audio, RAM and ROM banking, and the graphics system.

Control Page Map ($02xx)

0 1 2 3 4 5 6 7 8 9 A B C D E F
0x W R W W W W W W - - - - - - - -
1x - - - - - - - - - - - - - - - -
2x - - - - - - - - - - - - - - - -
3x - - - - - - - - - - - - - - - -
4x - - - - - - - - - - - - - - - -
5x - - - - - - - - - - - - - - - -
6x - - - - - - - - - - - - - - - -
7x - - - - - - - - - - - - - - - -
8x W W W W W W W W W W W W W W W W
9x W W - - - - - - W - - - - - W W
Ax W W - - - - - - W W W W - - - -
Bx W - - - - - - - - - - - - - - -
Cx W W W W W W W W R R R R R R R R
Dx W R - - - - - - - - - - - - - -
Ex W W - - - - - - W W W - - - - W
Fx W W - - - - - - W W W - - - - W

Key

Color Address Description
$0200 Input Latch/Clock
$0201 Input Data
$0202 Audio Address Flag
$0203 Audio Address/Data
$0204 Main RAM Select
$0205 Extended RAM Select
$0206 Low ROM Select
$0207 High ROM Select
$0280 - $0283 Scroll Register (BG0)
$0284 - $0287 Scroll Register (BG1)
$0288 - $028B Scroll Register (BG2)
$028C - $028F Scroll Register (BG3)
$0290 Fixed Regions Top/Bottom
$0291 Fixed Regions Left/Right
$0298 Name Table Select
$029E Tileset Render Select
$029F Tileset Write Select
$02A0 Background Color Cycle Speed
$02A1 Sprite Color Cycle Speed
$02A8 Background Tileset Cycle Speed
$02A9 Background Tileset Cycle Limit
$02AA Sprite Tileset Cycle Speed
$02AB Sprite Tileset Cycle Limit
$02B0 Last Sprite
$02C0 - $02C7 Special Command Parameters
$02C8- $02CF Special Command Returns
$02D0 Special Command
$02D1 Special Command Status
$02E0 Bitmap Config
$02E1 Bitmap Control
$02E8 - $02EA Bitmap Address
$02EF Bitmap Data
$02F0 - $02F1 Debug Display
$02F8 - $02FA Active Features
$02FF Graphics Mode
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