From: Daniel D. <dr...@ma...> - 2001-12-14 11:48:31
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On 14 Dec 2001, Russel Winder wrote: > However, systems have always been able to have ROM and RAM in XDATA even > if this was actually a rare occurrence for 8051-based systems. SDCC > seems to have no way of dealing with this sensibly and s51 seems to have > no ability to simulate this situation at all. Has this been restrictive I think you have to use some extra gates outside of the 8051 chip to make it able to execute code from xdata space (combine psen,rw,rd, etc.) It is not the simulator's work to simulate outside of the chip. But anyway, I'm planing to implement a general way of maping any part of any memory space to any other memory space(es). Mybe it can help to solve your problem. Daniel |