mirror of https://github.com/JorjBauer/aiie.git
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#ifndef __VMRAM__H
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#define __VMRAM__H
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#include <stdint.h>
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/* Preallocated RAM class. */
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class VMRam {
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public:
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VMRam();
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~VMRam();
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void init();
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uint8_t readByte(uint32_t addr);
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void writeByte(uint32_t addr, uint8_t value);
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uint8_t *memPtr(uint32_t addr);
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bool Serialize(int8_t fd);
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bool Deserialize(int8_t fd);
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bool Test();
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private:
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// We need 599 pages of 256 bytes for the //e.
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//
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// This previously used a split memory model where some of this was
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// in internal ram and some was external - and while that's not true
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// right now, it may be true again in the future.
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//
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// If we go that way: zero-page should be in internal RAM (it's
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// changed very often). Some other pages that are read or written
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// often should probably go in here too. The order of the pages (in
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// apple/applemmu.cpp) defines what order the pages are referenced
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// in the VMRam object; the lowest should wind up in internal RAM.
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// Pages 0-3 are ZP; we want those in RAM.
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// Pages 4-7 are 0x200 - 0x3FF. We want those in RAM too (text pages).
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// Has to be static if we're using the EXTMEM sectioning, so it's now in vmram.cpp :/
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//EXTMEM uint8_t preallocatedRam[599*256];
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};
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#endif
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