Address Bus B

Address Bus B is an 8-bit bus on the SNES. It is also known as the SNES bus. It is drawn in purple in the colorized jwdonal schematic, and its individual address lines are labeled PA0-PA7, which stands for "peripheral address," as in S-CPU peripherals (not SNES peripherals). It is connected to:

• pins 51-58 of the S-CPU
• pins 5-12 of S-PPU1
• pins 43-50 and 53-54 of WRAM
• pins 28-30 and 59-61, 3 and 34 of the Cartridge Slot
• pins 1-8 of the Expansion Port
• the S-SMP
• S-PPU2