168 lines
5.6 KiB
Text
168 lines
5.6 KiB
Text
#==========================================================================================================================================
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# Memory Map
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#==========================================================================================================================================
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0x0000 BIOS (4096 Bytes) (write to this section is disabled)
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0x0FFF
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-------
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0x1000 CMOS (128 Bytes) (write to this section is only allowed in BIOS Mode)
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MemStart: (2 bytes) 0x0000
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MemSize: (2 bytes) 0x0002
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ClockSpeed: (2 bytes) 0x0004
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BootDisk: 0x0010
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ICC_
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ICC_OutputAddr: (2 bytes) 0x007E
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0x107F
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-------
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0x1080 INTERRUPT VECTOR (512 Bytes)
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Status: 1 Byte
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0xFF: Enabled
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0x00: Disabled
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Handler Address: 2 Byte
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...Repeat...
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0x127F
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-------
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0x1280 KEYBOARD MAPPING (224 Bytes) (write to this section is only allowed in BIOS Mode)
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0x00: Modifiers (2 bytes)
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0b00000000.00000001: Left Shift
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0b00000000.00000010: Left Ctrl
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0b00000000.00000100: Left Alt
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0b00000000.00001000: Left Super
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0b00000000.00010000: Right Shift
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0b00000000.00100000: Right Control
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0b00000000.01000000: Right Alt
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0b00000000.10000000: Right Super
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0b00000001.00000000: Caps Lock
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0b00000010.00000000: Num Lock
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0b00000100.00000000: Scroll Lock
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0x02: KeyCode (2 bytes)
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0x135F
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0x1360 MOUSE MAPPING (32 Bytes)
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0x137F
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0x1380 BOOTLOADER (512 Bytes)
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0x157F
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0x1580 DISK INTERFACE (128 Bytes)
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Read/Write:
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Signal: 1 Byte
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0x00: Start Operation
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0x01: Cancel Current Operation
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0xFF: Ignore
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Mode: 1 Byte
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0x00: Read
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0x01: Write
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Disk: 1 Byte
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Sector: 2 Bytes
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Address: 2 Bytes
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DataSize: 2 Bytes
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DataAddress: 2 Byte
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ReadOnly:
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Status: 1 Byte
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0x00: Free
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0x01: Writing
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0x02: Reading
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CurrentDisk: 1 Byte
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CurrentSector: 2 Bytes
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CurrentAddress: 2 Bytes
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RestDataSize: 2 Bytes
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SourceData: 2 Bytes
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Free: 107 Byte
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0x15FF
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0x1600 VIDEO CARD INTERFACE (256 Bytes)
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0x00: Video Mode (1 Byte)
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0x00: Text Single Color
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# 0x01: Text 16-color
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# 0x02: Text 256-color
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# 0x03: Text True Color Mode
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# 0x04: GFX Single Color
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# 0x05: GFX 16-color
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# 0x06: GFX 256-color
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# 0x07: GFX True Color Mode
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# 0x01: Clear Color (1 Byte)
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# 0x02: Palette (1 Byte)
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0x03: Signal (1 Byte)
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0x00: Continue
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0x02: Text Single Color - Direct Print Character
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0x03: Text Single Color - Store character in buffer
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0x04: Text SIngle Color - Direct Print buffer & Flush Buffer
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0x05: Text Single Color - Flush Buffer
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0x06: Text Single Color - Print Buffer Without Flushing
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0x07: Text Single Color - Print Buffered String
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0xE0: Refresh Screen
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0xE1: Clear Screen
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0x04: Text Single Color Character (1 Byte)
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0x05: Text Single Color Inverted colors (1 Byte)
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0x06: (2 bytes) Text Single Color Buffered String Address
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0x16FF
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0x1700 GENERIC SERIAL INTERFACE (64 Bytes)
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0x173F
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0x1740 RAM (59583 Bytes)
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0xFFFF
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#==========================================================================================================================================
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# INTERRUPTS
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#==========================================================================================================================================
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BIOS Specific - Software Interrupts:
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====================================
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0x20: BIOS Interrupt (Uses R10 register for specific functionality)
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0x00: Set Interrupt Handler
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0x01: Clear Interrupt Handler
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0x10: Disk Interface
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0x30: BIOS Video Interrupt (Uses R10 register for specific functionality)
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0x01: Print Char in Text Single Mode (char stored in R9 register)
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0x02: New Line in Text Single Mode
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0x03: Print Null-Terminated String in Text Single Mode (string address stored in R9 register)
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0x04: Print Integer in Text Single Mode (integer stored in R9 register)
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0x05: Store Integer in buffer in Text Single Mode (integer stored in R9 register)
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0x06: Store character in buffer in Text Single Mode (integer stored in R9 register)
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0x07: Print buffer no flush in Text Single Mode
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0x08: Print buffer and flush in Text Single Mode
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0x09: Flush buffer in Text Single Mode
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0x0A: Store Null-Terminated String in buffer in Text Single Mode (string address stored in R9 register)
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0x0B: Toggles inverted colors in Text Single Mode
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0xE0: Refresh Screen
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0xE1: Clear Screen
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Machine Specific - Hardware Interrupts:
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=======================================
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MAX INTERRUPT 0xAA
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0x80: Disk Interface Finished
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0xA0: Keyboard Interface - Key Pressed
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0xA1: Keyboard Interface - Key Released
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0xA2: Keyboard Interface - Text Entered
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#==========================================================================================================================================
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# DPT - Partition Table
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#==========================================================================================================================================
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Disk Address: 0x200 - 0x400 (512 bytes)
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Header: (0x200 - 0x20B) (12 bytes)
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0x000: (2 bytes) - 0xF1CA - This number identifies this block as a DPT partition table
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0x002: (2 bytes) - DPT version
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0x004: (1 byte) - Partition count (max 5)
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0x005: (7 bytes) - Reserved
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Partition Table: (0x20C - 0x3FF) (500 bytes)
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Entry: (100 bytes) (x5)
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0x00: (4 bytes) - Start Address
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0x04: (4 bytes) - Size
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0x08: (28 bytes) - Reserved
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0x40: (64 bytes) - Partition label
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