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Private Memory

The memory contained into the MC is said to be "private" because it is isolated from the EXT-BUS by the mean of 3rd-state buffers so no external device can gain access to it in any way.

It is possible to build an external Memory Unit to provide "shared" memory. That would be the one used by DMA capable peripherals.

The use of a separate private memory allows for concurrent operations between DMA operations and normal software execution as long as this takes place in private memory.

LC-81 Homebrew Minicomputer -- this software is based on Help Books running at melissa