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48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
#ifndef ADDRESSES_H
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#define ADDRESSES_H
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/*
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* Memory layout of addresses 0x0000 - 0xA000
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* 0x0000-0x0fff - Probably shouldn't mess with this? idk it feels wrong
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* 0x1000-0x17ff - Free
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* 0x1800-0x1fff - Global Variables
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* 0x2000-0x2fff - Larger structs
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* 0x3000-0x3fff - Filesystem area
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* 0x4000-0x4fff - Font area
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* 0x6000-0x84ff - Free
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* 0x8500-0x8fff - SMAP Area
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* 0x9000-0x9fff - VBE info area
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*/
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// Global Variables
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#define SLEEP_TIMER 0x1800
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#define CURRENT_PAGE_DIR_ADDR 0x1804
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#define PHYS_MEM_MAX_BLOCKS 0x1808
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#define PHYS_MEM_USED_BLOCKS 0x180C
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// Some structs
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#define TERMINAL_INFO_LOC 0x2000
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#define KEYBOARD_STATE_LOC 0x2100
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#define DATETIME_LOC 0x2200
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// Filesystem Area 0x3000 - 0x3fff
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#define FILETABLE_LOC 0x3000
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// Font area 0x4000 - 0x4fff
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#define FONT_LOC 0x4000
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#define FONT_WIDTH (FONT_LOC)
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#define FONT_HEIGHT (FONT_LOC + 1)
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// Smap Area 0x8500 - 0x8fff
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#define SMAP_ENTRY_COUNT 0x8500
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#define SMAP_ENTRIES 0x8504
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// VBE Info Area 0x9000 - 0x9fff
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#define MODE_INFO_BLOCK_LOC 0x9000 // 512 Bytes
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// Other addresses
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#define KERNEL_LOC 0x100000
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#define MEMMAP_AREA 0x30000
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#endif
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