Ek bilgiler:
http://amigadev.elowar.com/read/ADCD_2.1/Hardware_Manual_guide/node0005.htmlA later version of the custom chips found in early A500s and A2000s
replaced the original Agnus chip (8361) with a newer version called Fat
Agnus (8370/8371). The Fat Agnus chip has DMA access to 512K of Chip
memory, just like the original Agnus, but also allows an additional 512K
of internal slow memory or pseudo-fast memory located at ($00C0 0000).
Since the slow memory can be used for operating system overhead, this
allows all 512K of Chip memory to be used by the custom chips.
Neden SlowRAM :
The name slow memory comes from the fact that bus contention with the
custom chips can still occur even though only the CPU can access the
memory. Since slow memory is arbitrated by the same gate that controls
Chip memory, the custom chips can block processor access to slow memory in
the higher resolution video modes.