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Author Topic: Technical Question regarding beginning address for FAST Ram on 68k (A500)  (Read 1317 times)

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Offline AntiriadTopic starter

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Does anybody know what should be the beginning address for the FAST ram? If we assume that we have 8MB of Fast Ram what should be the end address?

Does the Ram get addressed from the A0-A15 Address pins or is there an "internal" design trick(due to Chip/Fast Ram architecture) for doing that such as using upper address pins and doing bank swaps?

Thanks

Mike
 

Offline AntiriadTopic starter

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Thanks for your response. From the Memory map you gave me it seems that the 0-200000 is reserved for Chip Ram and from 200000-9FFFFF for Fast. This adds up to 10MB of Ram. I Though the the maximum memory allocated for an A500 is 9MB????

Correct?

Mike