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VRAM: Difference between revisions

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(chips A & B named in schematic)
(size in bytes)
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There are two '''VRAM''' chips on the SNES motheboard, both connected to [[S-PPU1]].
There are two '''VRAM''' chips on the SNES motherboard, both connected to [[S-PPU1]].  They are both [[SRAM]] and each 32K x 8 bit (32,768 bytes) in size, for a total of 65,536 bytes.


One chip holds the low bytes of the 16-bit words, the other chip holds the high bytes.
One chip holds the low bytes of the 16-bit words, the other chip holds the high bytes.

Revision as of 06:37, 6 July 2023

There are two VRAM chips on the SNES motherboard, both connected to S-PPU1. They are both SRAM and each 32K x 8 bit (32,768 bytes) in size, for a total of 65,536 bytes.

One chip holds the low bytes of the 16-bit words, the other chip holds the high bytes.

The two chips can be referred to as "A" and "B", after the lines of the VRAM Data Bus VDA0~7 and VDB0~7.

VRAM chip B in region B2 of the jwdonal schematic (directly above chip A)