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Line 17: A notable exception was the IBM PC. Graphics display was facilitated by the use of an expansion card with its own memory plugged into an ISA slot. The first IBM PC to use the SMA was the [[IBM PCjr]], released in 1984. [[Video memory]] was shared with the first ~~128KiB~~128 KiB of RAM. The exact size of the video memory could be reconfigured by software to meet the needs of the current program. An early hybrid system was the Commodore Amiga which could run as a shared memory system, but would load executable code preferentially into non-shared "[[Amiga Chip RAM\|fast RAM]]" if it was available.

Shared graphics memory: Difference between revisions