Latest revision as of 20:01, 29 April 2018

CXK5864 8KiB RAM chips as palette RAM in a AES system

Palette RAM is 16KiB (2 banks of 256 palettes of 16, 16bit colors), it contains color data for each palette.

It is accessible directly from the 68k memory space.

Speed

Should be 120ns or less (3mclk).

The CXK5864BSP-10L is a 8192-word x 8-bit high speed CMOS static RAM.

The CXK5864BSP comes in 3 packages:

- CXK5864BSP-70L for 70ns (access time)

- CXK5864BSP-10L for 100ns (access time)

- CXK5864BSP-12L for 120ns (access time)

@@ Line 1: / Line 1: @@
 [[File:Aes_palram.jpg|thumb|right|CXK5864 8KiB RAM chips as palette RAM in a AES system]]
-Palette RAM is 16KiB (2 banks of 256 palettes of 16, 16bit colors), and contains color data for each [[palettes]].
+[[File:CXK5864BSP-10L.jpg|thumb|right|CXK5864 8KiB RAM chips as palette RAM in a MV2F system]]
+[[File:BR6265BF-10SL.jpg|thumb|right|BR6265BF 8KiB RAM chips as palette RAM in a MV1AX system]]
+Palette RAM is 16KiB (2 banks of 256 palettes of 16, 16bit [[colors]]), it contains color data for each [[palettes|palette]].
-It can be read and written at any time. During active display, the color read or written will be displayed for at least one pixel, resulting in noticeable glitches if multiple palettes are updated.
+It is accessible directly from the [[68k]] [[68k memory map|memory space]].
+=Speed=
+Should be 120ns or less (3mclk).
+The CXK5864BSP-10L is a 8192-word x 8-bit high speed CMOS static RAM.
+The CXK5864BSP comes in 3 packages:
+- CXK5864BSP-70L for 70ns (access time)
+- CXK5864BSP-10L for 100ns (access time)
+- CXK5864BSP-12L for 120ns (access time)
 [[Category:Video system]]
 [[Category:Chips]]