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VRAM: Difference between revisions
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[[File:vram chip.png|thumb|VRAM chip B in region B2 of the [[jwdonal schematic]] (directly above chip A)]] | [[File:vram chip.png|thumb|VRAM chip B in region B2 of the [[jwdonal schematic]] (directly above chip A)]] | ||
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. | 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 [[bank]]). | ||
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 06:03, 16 December 2023
VRAM chip B in region B2 of the jwdonal schematic (directly above chip A)
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 bank).
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.