Cartridge: Revision history

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25 August 2023

  • curprev 16:4816:48, 25 August 2023‎ Asie talk contribs‎ 594 bytes +594‎ Created page with "== Cartridge bus == The cartridge bus allows both memory access (to linear addresses 0x10000-0xFFFFF) and I/O access (to ports 0xC0-0xFF). To facilitate this, the Memory/IO pin is used: * When Memory/IO is asserted '''high''', all bus address pins specify the 20-bit linear memory address. * When Memory/IO is asserted '''low''', bus address pins 0-7 specify the port address bits 0-7, bus address pins 8-15 are low, bus address pins 16-19 specify the port address bits 4-..."
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