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Author Topic: Why no FPGA accelerator cards?  (Read 10831 times)

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Offline yaqube

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Re: Why no FPGA accelerator cards?
« on: December 12, 2010, 06:48:58 PM »
Quote from: SamuraiCrow;598313
The A500 did not have 70 nanosecond memory capable of 14 MHz bus access and therefore the CPU and chipset had to split the 7 MHz bus speed between themselves taking every other clock cycle for each.


I'm sorry but you are talking bollocks. In every Amiga chipset (OCS/ECS/AGA) the Chip RAM memory bus is run at ~3.5 MHz. The CPU can access every other memory cycle at most while the chipset DMA can access all of them (and can block the CPU for long periods).