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11/20/02 15:55
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#32828 - Philips 8051 extension, edata
Hi.
I'm studying philips extension of 8051. I got some questions about EDATA.

- How much edata is in philips mx core? In user manual is edata on address 00h to 4ffh in architecture reference
specification is on addresses 00h to ffffh.

- If there is only 1280 bytes of edata ram which memory we affect with instruction emov on addresses between
7f:04ffh and 80:0000h?

- what if we make memory access with eptr (instructions MOVX A, @EPTR and MOVX @EPTR, A) on
address above 7e:ffffh. do we access to edata ram?

thank you
simon

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