repo2/firmware_legacy/papilioduo/memory.h
| 339 | markw | #ifndef MEMORY_H
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#define MEMORY_H
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| 370 | markw | //512k memory map
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//(up to 320k atari mem)
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//----
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//64k (base)
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//64-127 (64k)= freeze backup
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//128-223 (96k)= carts
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//160-223 (64k)= dir cache
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//224-255 (32k)= os rom/ram
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//256 (ext)
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| 339 | markw | #define SRAM_BASE ((void*) 0x200000)
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#define SDRAM_BASE ((void*) 0x800000)
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// Memory usage...
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// 0x20000-0x37FFF (0x820000 in zpu space) = carts - 96k
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// 0x28000-0x37FFF (0x820000 in zpu space) = directory cache - 64k
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// 0x10000-0x1FFFF (0x810000 in zpu space) = freeze backup - 64k
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// 0x38000-0x3FFFF (0x838000 in zpu space) = os rom/basic rom - 32k
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#define INIT_MEM
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#define DIR_INIT_MEM (SDRAM_BASE + 0x28000)
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#define DIR_INIT_MEMSIZE 65536
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#define FREEZE_MEM (SDRAM_BASE + 0x10000)
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#define CARTRIDGE_MEM (SDRAM_BASE + 0x20000) // Share with dir cache, long carts will be wired by dir listing
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// offset in SDRAM area
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#define ROM_OFS 0x38000
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#define atari_regbase ((void*) 0x10000)
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#define atari_regmirror ((void*) 0x20000)
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#define zpu_regbase ((void*) 0x40000)
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#define pokey_regbase ((void*) 0x40400)
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#endif
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