Contents | < Browse
5. New LISA Display Modes
We now have a palette of 2~24 colours.
LORES (320x200)
----------------
6 Bitplane (non HAM, non EHB) 64 colours !
7 Bitplane 128 colours !
8 Bitplane 256 colours !
8 Bitplane HAM Any 2^24 colours !
Dual playfield, Max 4 bitplane per playfield. 16 colours !
per playfield. The bank of 16 colours in the 256 colour palette
is selectable per playfield.
HIRES (640x200)
----------------
5 Bitplanes 32 colours @
6 Bitplanes 64 colours @
7 Bitplanes 128 colours @
8 Bitplanes 256 colours @
6 Bitplanes EHB 32 * 2 colours @
6 Bitplanes HAM 4096 colours @
8 Bitplanes HAM any of 2^24 colours @
Dual playfield, max 4 bitplane per playfield 16 colours per ! or @
playfield. The bank of 16 colours in the 256 colour palette
is selectable per playfield.
SUPERHIRES (1280X200)
---------------------
1 or 2 bitplanes, as ECS, but no colour fudging !
3 Bitplanes 8 colours @
4 Bitplanes 16 colours @
5 Bitplanes 32 colours $
6 Bitplanes 64 colours $
7 Bitplanes 128 colours $
8 Bitplanes 256 colours $
6 Bitplanes EHB 32 * 2 colours $
6 Bitplanes HAM 4O96 colours $
8 Bitplanes HAM any of 2~24 colours $
Dual Playfield, max 4 bitplanes per playfield @ or $
16 colours per playfield. The bank of 16 of colours
in the 256 colours palette is selectable per playfield.
VGA (640X480 non-interlaced)
-----------------------------
1 or 2 bitplanes, as ECS, but no colour fudging !
3 Bitplanes 8 colours @
4 Bitplanes 16 colours @
5 Bitplanes 32 colours $
6 Bitplanes 64 colours $
7 Bitplanes 128 colours $
8 Bitplanes 256 colours $
6 Bitplanes EHB 32 * 2 colours $
6 Bitplanes HAM 4O96 colours $
8 Bitplanes HAM any of 2~24 colours $
Dual playfield,Max 4 bitplanes per playfield @ or $
16 colours per playfield . The bank of 16 colours
in the 256 colour palette is selectable per playfield
Super 72 (848x614 interlaced, 70 Hz frame rate)
-----------------------------------------------
1 or 2 bitplanes, as ECS, but no colour fudging 1X
3 Bitplanes 8 colours 2X
4 Bitplanes 16 colours 2X
5 Bitplanes 32 colours 4X
6 Bitplanes 64 colours 4X
7 Bitplanes 128 colours 4X
8 Bitplanes 256 colours 4X
6 Bitplanes EHB 32 * 2 colours 4X
6 Bitplanes HAM 4O96 colours 4X
8 Bitplanes HAM any of 2~24 colours 4X
Dual playfield,Max 4 bitplanes per playfield 2X or 4X
16 colours per playfield . The bank of 16 colours
in the 256 colour palette is selectable per playfield
All playfield scrolling is now in 35ns increments.
Pre AA scrolling was in 140ns increments.
Scroll Range as Programmed in BPLCON1
-----------------------------------
+----------+--------------+--------------+
| 1X Modes | LORES Pixels | SHRES Pixels |
+----------+--------------+--------------+
| LORES | 0-15 | 0-63 |
| HIRES | 0-7 | 0-31 |
| SHRES | 0-3 | 0-15 |
+----------+--------------+--------------+
+----------+--------------+--------------+
| 2X Modes | LORES Pixels | SHRES Pixels |
+----------+--------------+--------------+
| LORES | 0-31 | 0-127 |
| HIRES | 0-15 | 0-63 |
| SHRES | 0-7 | 0-31 |
+----------+--------------+--------------+
+----------+--------------+--------------+
| 4X Modes | LORES Pixels | SHRES Pixels |
+----------+--------------+--------------+
| LORES | 0-63 | 0-255 |
| HIRES | 0-31 | 0-127 |
| SHRES | 0-15 | 0-63 |
+----------+--------------+--------------+
Sprites
-------
All sprites can now be displayed in either:
1) ECS default mode
2) 140 ns (this is not ECS mode!)
3) 70 ns
4) 35 ns
on display resolution. eg 35 ns sprites on a lores screen, or 140 ns
sprites on a superhires screen.
Sprites are either 16, 32, or 64 bits wide.
Sprites can be attatched in any mode (formerly could not attach sprites
in the ECS SHRES 35ns resolution mode).
Can use any bank of 16 colours from the 256 colour palette for the sprite
colours.
Key:
! needs 1x Bandwidth (old modes)
@ needs 2x Bandwidth (normal CAS 32bit bus with or double CAS 16 bit bus width)
$ needs 4x Bandwidth (double CAS 32bit bus width)