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DragonVM/extra/info/info
Sylar 0e25847a69 Sync push
2025-04-07 11:20:09 +02:00

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#==========================================================================================================================================
# Memory Map
#==========================================================================================================================================
0x0000 BIOS (4096 Bytes) (write to this section is disabled)
0x0FFF
-------
0x1000 CMOS (128 Bytes) (write to this section is only allowed in BIOS Mode)
MemStart: (2 bytes) 0x0000
MemSize: (2 bytes) 0x0002
ClockSpeed: (2 bytes) 0x0004
DisplayRedrawRate: (1 bytes) 0x0006
ScreenWidth: (2 bytes) 0x0007
ScreenHeight: (2 bytes) 0x0009
BootDisk: 0x0010
DiskList: (2 bytes) 0x007E
0x107F
-------
0x1080 INTERRUPT VECTOR (512 Bytes)
Status: 1 Byte
0xFF: Enabled
0x00: Disabled
Handler Address: 2 Byte
...Repeat...
0x127F
-------
0x1280 KEYBOARD MAPPING (224 Bytes) (write to this section is only allowed in BIOS Mode)
0x00: Modifiers (2 bytes)
0b00000000.00000001: Left Shift
0b00000000.00000010: Left Ctrl
0b00000000.00000100: Left Alt
0b00000000.00001000: Left Super
0b00000000.00010000: Right Shift
0b00000000.00100000: Right Control
0b00000000.01000000: Right Alt
0b00000000.10000000: Right Super
0b00000001.00000000: Caps Lock
0b00000010.00000000: Num Lock
0b00000100.00000000: Scroll Lock
0x02: KeyCode (2 bytes)
0x135F
-------
0x1360 MOUSE MAPPING (32 Bytes)
0x137F
-------
0x1380 BOOTLOADER (512 Bytes)
0x157F
-------
0x1580 DISK INTERFACE (128 Bytes)
Read/Write:
Signal: 1 Byte
0x00: Start Operation
0x01: Cancel Current Operation
0xFF: Ignore
Mode: 1 Byte
0x00: Read
0x01: Write
Disk: 1 Byte
Sector: 2 Bytes
Address: 2 Bytes
DataSize: 2 Bytes
DataAddress: 2 Byte
ReadOnly:
Status: 1 Byte
0x00: Free
0x01: Writing
0x02: Reading
CurrentDisk: 1 Byte
CurrentSector: 2 Bytes
CurrentAddress: 2 Bytes
RestDataSize: 2 Bytes
SourceData: 2 Bytes
Free: 107 Byte
0x15FF
-------
0x1600 VIDEO CARD INTERFACE (256 Bytes)
0x00: Video Mode (1 Byte)
0x00: Text Single Color
0x01: Text 16-color
# 0x02: Text 256-color
# 0x03: Text True Color Mode
# 0x04: GFX Single Color
# 0x05: GFX 16-color
# 0x06: GFX 256-color
# 0x07: GFX True Color Mode
0x01: Clear Color (1 Byte)
0x02: Palette (1 Byte)
0x03: Signal (1 Byte)
0x00: Continue
0x02: Text Single Color - Direct Print Character
0x03: Text Single Color - Store character in buffer
0x04: Text SIngle Color - Direct Print buffer & Flush Buffer
0x05: Text Single Color - Flush Buffer
0x06: Text Single Color - Print Buffer Without Flushing
0x07: Text Single Color - Print Buffered String
0x11: Text 16 Colors - Write Memory
0xE0: Refresh Screen
0xE1: Clear Screen
0xE2: Redraw Screen
0x04: Text Single Color Character (1 Byte)
0x05: Text Single Color Inverted colors (1 Byte)
0x06: (2 bytes) Text Single Color Buffered String Address
0x7E: Flags (2 Bytes)
0b00000000.00000001: Double Buffering Enabled
0b00000000.00000010: Disable Screen Redraw
0x80: Memory Controller
0x80: XCoordinate (2 Bytes)
0x84: YCoordinate (2 Bytes)
0x88: Character (1 Byte)
0x09: Foreground (1 Byte)
0x8A: Background (1 Byte)
(VRAM Memory Cell: Character:1, Foreground:1, Background:1, Reserved:1)
0x16FF
-------
0x1700 GENERIC SERIAL INTERFACE (64 Bytes)
0x173F
-------
0x1740 RAM (59583 Bytes)
0xFFFF
#==========================================================================================================================================
# INTERRUPTS
#==========================================================================================================================================
BIOS Specific - Software Interrupts:
====================================
0x20: BIOS Interrupt (Uses R10 register for specific functionality)
0x00: Set Interrupt Handler
0x01: Clear Interrupt Handler
0x10: Disk Interface
0x11: Disk Interface - Get disk list
0x12: Disk Interface - Load from DDD - BLOCKING
0x30: BIOS Video Interrupt (Uses R10 register for specific functionality)
0x01: Print Char in Text Single Mode (char stored in R9 register)
0x02: New Line in Text Single Mode
0x03: Print Null-Terminated String in Text Single Mode (string address stored in R9 register)
0x04: Print Integer in Text Single Mode (integer stored in R9 register)
0x05: Store Integer in buffer in Text Single Mode (integer stored in R9 register)
0x06: Store character in buffer in Text Single Mode (integer stored in R9 register)
0x07: Print buffer no flush in Text Single Mode
0x08: Print buffer and flush in Text Single Mode
0x09: Flush buffer in Text Single Mode
0x0A: Store Null-Terminated String in buffer in Text Single Mode (string address stored in R9 register)
0x0B: Toggles inverted colors in Text Single Mode
0x21: Write VRAM in Text16 Colors Mode (Cell address stored in R9)
0x22: Print String in Text16 Colors Mode (String address stored in R8, Cell address stored in R9)
0x23: Print Integer in Text16 Colors Mode (Integer stored in R8, Cell address stored in R9)
0x24: Clear Screen in Text16 Colors Mode (Cell address stored in R9)
0x25: Scroll in Text16 Colors Mode
0xE0: Refresh Screen
0xE1: Clear Screen
Machine Specific - Hardware Interrupts:
=======================================
MAX INTERRUPT 0xAA
0x80: Disk Interface Finished
0xA0: Keyboard Interface - Key Pressed
0xA1: Keyboard Interface - Key Released
0xA2: Keyboard Interface - Text Entered
0xE0: Virtual Display - Text16_Mode Screen Refreshed
#==========================================================================================================================================
# DPT - Partition Table
#==========================================================================================================================================
Disk Address: 0x200 - 0x400 (512 bytes)
Header: (0x200 - 0x20B) (12 bytes)
0x000: (2 bytes) - 0xF1CA - This number identifies this block as a DPT partition table
0x002: (2 bytes) - DPT version
0x004: (1 byte) - Partition count (max 5)
0x005: (7 bytes) - Reserved
Partition Table: (0x20C - 0x3FF) (500 bytes)
Entry: (100 bytes) (x5)
0x00: (4 bytes) - Start Address
0x04: (4 bytes) - Size
0x08: (2 bytes) - Flags
0x08: (26 bytes) - Reserved
0x24: (64 bytes) - Partition label
#==========================================================================================================================================
# Regex
#==========================================================================================================================================
Type: Javascript
Number Constants
0x[0-9A-Fa-f]+|0b[0-1]+|(?<!\w)[0-9]+(?!\w)
Labels
\$\w+
Registers (case-insensitive)
(?<!\w)(r[1-9]|r10|fl|pp|rv|fp|sp|ip|acc)(?!\w)
Variables in dasm
VARIABLE_NAME(?!\.)(?!\w)
#==========================================================================================================================================
# Test Disk DPT Block (4 MB Disk, 4 partitions)
#==========================================================================================================================================
F1 CA 00 02 04 FF FF FF FF FF FF FF
00 00 04 00
00 00 14 00
00 00
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
42 4F 4F 54 53 45 43 54 4F 52 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 18 00
00 01 68 00
00 00
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 01 80 00
00 1F 40 00
00 01
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
44 72 61 67 6F 6E 4F 53 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 20 C0 00
00 1F 40 00
00 00
FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
54 65 73 74 20 50 61 72 74 69 74 69 6F 6E 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Disk: 4096 kb
=============
boot + dpt 1 kb 1024 bytes (9x400) 0x0000.0000 -> 0x0000.03FF
-------------
boot-ssector 5 kb 5120 bytes (0x1400) 0x0000.0400 -> 0x0000.17FF
Unallocated 90 kb 92160 bytes (0x16800) 0x0000.1800 -> 0x0001.7FFF
DragonOS 2000 kb 2048000 bytes (0x1F4000) 0x0001.8000 -> 0x0020.BFFF
Test Partition 2000 kb 2048000 bytes (0x1F4000) 0x0020.C000 -> 0x0040.0000
#==========================================================================================================================================
# Bootstrap structure
#==========================================================================================================================================
Starting bytes of bootable partition:
Identifier (2 Bytes) - Must be set to 0xF1C4
Reserved (30 Bytes)
Kernel first stage block must start at PART_ADDR + 32 and must be 1024 bytes in size
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