Refactoring in bios/drake
This commit is contained in:
parent
69d9f49361
commit
b90cc537ef
14 changed files with 250 additions and 154 deletions
2
build.nr
2
build.nr
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@ -1 +1 @@
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1614
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1617
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@ -7,7 +7,7 @@ fixed_clock = false
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clock_rate_sec = 5000
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memory_extension_pages = 16
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screen_redraw_rate_per_second = 10
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screen_redraw_rate_per_second = 20
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SingleColor_foreground = #009900FF
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SingleColor_background = #111111FF
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Binary file not shown.
Binary file not shown.
Binary file not shown.
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@ -184,6 +184,69 @@
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@end
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@raw_export_end
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@export_comment BIOS_API " --\n"
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@export_comment BIOS_API " Disk driver modes."
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@raw_export_start BIOS_API
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@group DiskMode
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READ 0x00
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WRITE 0x01
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@end
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@raw_export_end
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@export_comment BIOS_API " --\n"
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@export_comment BIOS_API " Disk driver signals."
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@raw_export_start BIOS_API
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@group DiskSignals
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START 0x00
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CANCEL 0x01
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IGNORE 0xFF
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@end
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@raw_export_end
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@export_comment BIOS_API " --\n"
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@export_comment BIOS_API " Disk driver status."
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@raw_export_start BIOS_API
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@group DiskStatus
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FREE 0x00
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WRITING 0x01
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READING 0x02
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@end
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@raw_export_end
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@export_comment BIOS_API " --\n"
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@export_comment BIOS_API " Disk driver registers."
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@raw_export_start BIOS_API
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@group DiskRegisters
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SIGNAL 0x00
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MODE_SELECTOR 0x01
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DISK_SELECTOR 0x02
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SECTOR_SELECTOR 0x03
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ADDRESS_SELECTOR 0x05
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DATA_SIZE 0x07
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MEMORY_ADDRESS 0x09
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RO_STATUS 0x0B
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RO_CURRENT_DISK 0x0C
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RO_CURRENT_SECTOR 0x0D
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RO_CURRENT_ADDRESS 0x0F
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RO_REST_DATA_SIZE 0x11
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RO_MEMORY_ADDRESS 0x13
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@end
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@raw_export_end
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@export_comment BIOS_API " --\n"
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@export_comment BIOS_API " Disk driver data structure."
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@raw_export_start BIOS_API
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@struct DiskDriverData
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Mode:1 > 0x00
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Disk:1 > 0x00
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Sector:2 > 0x00, 0x00
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Address:2 > 0x00, 0x00
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DataSize:2 > 0x00, 0x00
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MemoryAddress:2 > 0x00, 0x00
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@end
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@raw_export_end
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@export_comment BIOS_API " --\n"
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## ===============================================================================================
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.data
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@ -2,7 +2,54 @@
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.code
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_print_machine_info:
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_print_string_text16: ## _print_string(String* str, Text16VModeCell* cell)
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arg R1 ## @Param: String addr
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arg R2 ## @Param: Cell addr
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_print_string_text16_loop:
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mov R6, R2 ## Restore Cell addr
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movb *R6, *R1 ## Move next character into cell
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inc R1 ## Point address to next character
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addip R6, 3 ## Offset to X coord of cell
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movb R7, *R6 ## Store X coord in R7
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inc R7 ## Increment X coord
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movb *R6, R7 ## Store new X coord in cell
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mov R10, 0x21 ## int 0x30 parameter for print_char_text16
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mov R9, R2 ## int 0x30 parameter for text_cell address
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int 0x30 ## bios_video_int
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movb ACC, *R1 ## Copy current character in ACC
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jne $_print_string_text16_loop, 0 ## Jump if current character is not 0 (NULL_TERM)
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ret
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_print_integer_signle_color:
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mov R1, 0
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arg ACC
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jne $_print_integer_signle_color_loop, 0
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push 48 ## '0' ASCII is 48
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inc R1
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jmp $_print_integer_signle_color_loop_end
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_print_integer_signle_color_loop:
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jeq $_print_integer_signle_color_loop_end, 0
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divipu ACC, 10
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addipu RV, 48
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push RV
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inc R1
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jmp $_print_integer_signle_color_loop
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_print_integer_signle_color_loop_end:
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pop R9
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dec R1
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movb [VGA_Registers.TEXT_SINGLE_CHAR], R9
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movb [VGA_Registers.SIGNAL], reg(S_REG_1)
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mov ACC, R1
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jne $_print_integer_signle_color_loop_end, 0
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ret
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_print_machine_info_signle_color:
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mov R9, $_bios_logo_2_line_1
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mov R10, 0x0C
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int 0x30 ## Print Next Logo Line
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@ -69,12 +116,12 @@ _print_machine_info:
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mov R9, $_bios_logo_2_line_5
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mov R7, 4
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mov ACC, 19
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_print_machine_info_logo_loop:
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_print_machine_info_logo_signle_color_loop:
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inc R7
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mov R10, 0x0C
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int 0x30 ## Print Next Logo Line
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addip R9, 54 ## 54 is the length of a line
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mov R10, 0x02
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int 0x30 ## Print New Line
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jls $_print_machine_info_logo_loop, R7
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jls $_print_machine_info_logo_signle_color_loop, R7
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ret
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@ -6,7 +6,8 @@
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_int_20_handler:
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mov ACC, R10
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jeq $_int_20_disk_interface, 0x0010
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jeq $_int_20_disk_interface_get_disk_list, 0x0011
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jeq $_int_20_disk_interface_get_disk_list, 0x0011 ## TODO: Implement
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jeq $_int_20_disk_interface_load_from_ddd_blocking, 0x0012
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jeq $_int_20_set_new_interrupt_handler, 0x0000
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jeq $_int_20_clear_interrupt, 0x0001
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jmp $_int_20_end
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@ -29,6 +30,11 @@ _int_20_disk_interface:
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jmp $_int_20_end
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_int_20_disk_interface_get_disk_list:
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jmp $_int_20_end
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_int_20_disk_interface_load_from_ddd_blocking:
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push R9 ## DDD Address
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push 1
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call $_disk_load_from_ddd_blocking
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jmp $_int_20_end
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_int_20_set_new_interrupt_handler:
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push R8 ## Interrupt Code
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push R9 ## Handler Address
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@ -61,6 +67,7 @@ _int_30_handler:
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jeq $_int_30_print_string_buffered, 0x000C
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jeq $_int_30_write_vram_text16, 0x0021
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jeq $_int_30_print_string_text16, 0x0022
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jeq $_int_30_clear_screen, 0x00E0
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jeq $_int_30_refresh_screen, 0x00E1
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@ -87,13 +94,13 @@ _int_30_direct_print_integer_text_single:
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mov reg(S_REG_1), Sig_VGA_Text_Single_Color.PRINT_CHAR
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push R9
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push 1
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call $_print_integer
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call $_print_integer_signle_color
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jmp $_int_30_end
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_int_30_store_integer_text_single:
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mov reg(S_REG_1), Sig_VGA_Text_Single_Color.STORE_CHAR
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push R9
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push 1
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call $_print_integer
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call $_print_integer_signle_color
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jmp $_int_30_end
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_int_30_store_char_text_single:
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movb [VGA_Registers.TEXT_SINGLE_CHAR], R9
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@ -140,6 +147,12 @@ _int_30_write_vram_text16:
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movb [VGA_Registers.MEMORY_CONTROLLER_Y_BYTE], *R9
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movb [VGA_Registers.SIGNAL], Sig_VGA_Text_16_Color.WRITE_VRAM
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jmp $_int_30_end
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_int_30_print_string_text16:
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push R8 ## String addr
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push R9 ## TextCell16 addr
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push 2
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call $_print_string_text16
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jmp $_int_30_end
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_int_30_clear_screen:
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movb [VGA_Registers.SIGNAL], Sig_VGA_Text_Single_Color.CLEAR_SCREEN
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@ -4,7 +4,7 @@
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@include <data.dss>
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@include <utils.dss>
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@include <drivers.dss>
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@include <display_info.dss>
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@include <display.dss>
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## ============================= BIOS Program =============================
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.code
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@ -21,7 +21,7 @@ _bios_entry_point:
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int 0x20 ## -Calling int 0x20 with 0x00 as parameter, to set new handler up
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push 0
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call $_print_machine_info ## Print BIOS logo and machine info
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call $_print_machine_info_signle_color ## Print BIOS logo and machine info
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## MBR Loading
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and FL, 0b1111111111111110 ## Disable interrupts
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@ -2,6 +2,34 @@
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.code
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_disk_load_from_ddd_blocking: ## _disk_load_from_ddd_blocking(DiskDriverData* ddd)
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arg R1 ## @Param: ddd
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movb [{MemoryAddresses.DISK_INTERFACE + DiskRegisters.MODE_SELECTOR}], *R1
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inc R1
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movb [{MemoryAddresses.DISK_INTERFACE + DiskRegisters.DISK_SELECTOR}], *R1
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inc R1
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mov [{MemoryAddresses.DISK_INTERFACE + DiskRegisters.SECTOR_SELECTOR}], *R1
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addip R1, 2
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mov [{MemoryAddresses.DISK_INTERFACE + DiskRegisters.ADDRESS_SELECTOR}], *R1
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addip R1, 2
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mov [{MemoryAddresses.DISK_INTERFACE + DiskRegisters.DATA_SIZE}], *R1
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addip R1, 2
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mov [{MemoryAddresses.DISK_INTERFACE + DiskRegisters.MEMORY_ADDRESS}], *R1
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movb [{MemoryAddresses.DISK_INTERFACE + DiskRegisters.SIGNAL}], DiskSignals.START
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and FL, 0b1111111111111110 ## Disable interrupts
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mov FL, ACC
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_disk_load_from_ddd_blocking_wait_loop:
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## debug_profile_start 0xE0, DBGProfilerTime.MILLIS
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mov ACC, [{MemoryAddresses.DISK_INTERFACE + DiskRegisters.RO_STATUS}]
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## debug_profile_stop
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jne $_disk_load_from_ddd_blocking_wait_loop, DiskStatus.FREE
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or FL, 0b0000000000000001 ## Enable interrupts
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mov FL, ACC
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ret
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_load_mbr_data_block:
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movb [{MemoryAddresses.DISK_INTERFACE + 0x1}], 0x00 ## Mode = Read
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movb R1, [CMOS_Settings.BOOT_DISK]
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@ -24,6 +52,9 @@ _calc_interrupt_vector_address:
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mov RV, ACC
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ret
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_set_interrupt_vector_entry:
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arg R1
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push R1
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@ -42,28 +73,6 @@ _set_interrupt_vector_entry_end:
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ret
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_print_integer:
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mov R1, 0
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arg ACC
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jne $_print_integer_loop, 0
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push 48 ## '0' ASCII is 48
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inc R1
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jmp $_print_integer_loop_end
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_print_integer_loop:
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jeq $_print_integer_loop_end, 0
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divipu ACC, 10
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addipu RV, 48
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push RV
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inc R1
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jmp $_print_integer_loop
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_print_integer_loop_end:
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pop R9
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dec R1
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movb [VGA_Registers.TEXT_SINGLE_CHAR], R9
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movb [VGA_Registers.SIGNAL], reg(S_REG_1)
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mov ACC, R1
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jne $_print_integer_loop_end, 0
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ret
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_strlen:
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@ -1,5 +1,5 @@
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## --
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## -- This file is automatically generated by the DragonAssembler (version 0.4.1613)
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## -- This file is automatically generated by the DragonAssembler (version 0.4.1616)
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## -- Please do not modify this file in any way.
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## --
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@ -117,3 +117,55 @@
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@end
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## --
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## Disk driver modes.
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@group DiskMode
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READ 0x00
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WRITE 0x01
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@end
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## --
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## Disk driver signals.
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@group DiskSignals
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START 0x00
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CANCEL 0x01
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IGNORE 0xFF
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@end
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## --
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## Disk driver status.
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@group DiskStatus
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FREE 0x00
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WRITING 0x01
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READING 0x02
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@end
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## --
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## Disk driver registers.
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@group DiskRegisters
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SIGNAL 0x00
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MODE_SELECTOR 0x01
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DISK_SELECTOR 0x02
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SECTOR_SELECTOR 0x03
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ADDRESS_SELECTOR 0x05
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DATA_SIZE 0x07
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MEMORY_ADDRESS 0x09
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RO_STATUS 0x0B
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RO_CURRENT_DISK 0x0C
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RO_CURRENT_SECTOR 0x0D
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RO_CURRENT_ADDRESS 0x0F
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RO_REST_DATA_SIZE 0x11
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RO_MEMORY_ADDRESS 0x13
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@end
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## --
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## Disk driver data structure.
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@struct DiskDriverData
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Mode:1 > 0x00
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Disk:1 > 0x00
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Sector:2 > 0x00, 0x00
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Address:2 > 0x00, 0x00
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DataSize:2 > 0x00, 0x00
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MemoryAddress:2 > 0x00, 0x00
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@end
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## --
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@ -3,7 +3,6 @@
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@include <../bios_api.dss>
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@include <palette.dss>
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@include <disk.dss>
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@ -14,13 +13,15 @@
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$textCell <Text16VModeCell>
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.code
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_drake_bootsector_entry_point:
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push 0
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push $ddd
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push $dpt_block
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push 2
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call $_load_dpt_block
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movb [VGA_Registers.VIDEO_MODE], VGA_VideoModes.TEXT_16_COLORS
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push 2
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@ -35,12 +36,10 @@ _drake_bootsector_entry_point:
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movb [$textCell.Foreground], DefaultPalette.Orange
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movb [$textCell.Background], DefaultPalette.Black
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push $string
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push $textCell
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push 2
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call $_print_string
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mov R10, 0x22
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mov R8, $string
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mov R9, $textCell
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int 0x30
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movb [$textCell.CoordX], 8
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@ -48,10 +47,10 @@ _drake_bootsector_entry_point:
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movb [$textCell.Foreground], DefaultPalette.Black
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movb [$textCell.Background], DefaultPalette.Orange
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push { $dpt_block + DPTStructure.ENTRIES_START + (2 * DPTStructure.ENTRY_SIZE_B) + DPTStructure.ENTRY_PART_LBL }
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push $textCell
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push 2
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call $_print_string
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mov R10, 0x22
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mov R8, { $dpt_block + DPTStructure.ENTRIES_START + (2 * DPTStructure.ENTRY_SIZE_B) + DPTStructure.ENTRY_PART_LBL }
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mov R9, $textCell
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int 0x30
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@ -59,39 +58,25 @@ _drake_bootsector_entry_point:
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_load_dpt_block:
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mov [$ddd.Mode], DiskMode.READ
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mov [$ddd.Disk], 0x00
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mov [$ddd.Sector], 0x0000
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mov [$ddd.Address], 0x0200
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mov [$ddd.DataSize], 512
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mov [$ddd.MemoryAddress], $dpt_block
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push $ddd
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push 1
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call $_disk_load_from_ddd_blocking
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_load_dpt_block: ## _load_dpt_block(DiskDriverData* ddd, DPTBlock* dpt_block)
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arg R1 ## @Param: ddd
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arg R2 ## @Param: dpt_block
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mov R3, R1 ## Copy $ddd address into R3
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movb *R1, DiskMode.READ ## $ddd.Mode
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inc R1
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movb *R1, 0x00 ## $ddd.Disk
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inc R1
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mov *R1, 0x0000 ## $ddd.Sector
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addip R1, 2
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mov *R1, 0x0200 ## $ddd.Address
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addip R1, 2
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mov *R1, 512 ## $ddd.DataSize
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addip R1, 2
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mov *R1, R2 ## $ddd.MemoryAddress
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mov R9, R3 ## Move original $ddd address into R9 (for int 0x20)
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mov R10, 0x12 ## int 0x20 parameter for load_from_ddd_blocking
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int 0x20 ## Bios interrupt
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ret
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_print_string: ## _print_string(String* str, Text16VModeCell* cell)
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arg R1 ## @Param: String addr
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arg R2 ## @Param: Cell addr
|
||||
_print_string_loop:
|
||||
mov R6, R2 ## Restore Cell addr
|
||||
movb *R6, *R1 ## Move next character into cell
|
||||
inc R1 ## Point address to next character
|
||||
addip R6, 3 ## Offset to X coord of cell
|
||||
movb R7, *R6 ## Store X coord in R7
|
||||
inc R7 ## Increment X coord
|
||||
movb *R6, R7 ## Store new X coord in cell
|
||||
mov R10, 0x21 ## int 0x30 parameter for print_char_text16
|
||||
mov R9, R2 ## int 0x30 parameter for text_cell address
|
||||
int 0x30 ## bios_video_int
|
||||
movb ACC, *R1 ## Copy current character in ACC
|
||||
jne $_print_string_loop, 0 ## Jump if current character is not 0 (NULL_TERM)
|
||||
ret
|
||||
|
||||
|
||||
|
||||
|
||||
.fixed 5120, 0xFF
|
||||
|
|
|
|||
|
|
@ -1,72 +0,0 @@
|
|||
@guard _DISK_DSS_
|
||||
|
||||
@define DISK_INTERFACE_ADDR 0x1580
|
||||
|
||||
@group DiskMode
|
||||
READ 0x00
|
||||
WRITE 0x01
|
||||
@end
|
||||
|
||||
@group DiskSignals
|
||||
START 0x00
|
||||
CANCEL 0x01
|
||||
IGNORE 0xFF
|
||||
@end
|
||||
|
||||
@group DiskStatus
|
||||
FREE 0x00
|
||||
WRITING 0x01
|
||||
READING 0x02
|
||||
@end
|
||||
|
||||
@group DiskRegisters
|
||||
SIGNAL 0x00
|
||||
MODE_SELECTOR 0x01
|
||||
DISK_SELECTOR 0x02
|
||||
SECTOR_SELECTOR 0x03
|
||||
ADDRESS_SELECTOR 0x05
|
||||
DATA_SIZE 0x07
|
||||
MEMORY_ADDRESS 0x09
|
||||
RO_STATUS 0x0B
|
||||
RO_CURRENT_DISK 0x0C
|
||||
RO_CURRENT_SECTOR 0x0D
|
||||
RO_CURRENT_ADDRESS 0x0F
|
||||
RO_REST_DATA_SIZE 0x11
|
||||
RO_MEMORY_ADDRESS 0x13
|
||||
@end
|
||||
|
||||
@struct DiskDriverData
|
||||
Mode:1 > 0x00
|
||||
Disk:1 > 0x00
|
||||
Sector:2 > 0x00, 0x00
|
||||
Address:2 > 0x00, 0x00
|
||||
DataSize:2 > 0x00, 0x00
|
||||
MemoryAddress:2 > 0x00, 0x00
|
||||
@end
|
||||
|
||||
.code
|
||||
|
||||
_disk_load_from_ddd_blocking:
|
||||
arg R1
|
||||
movb [{DISK_INTERFACE_ADDR + DiskRegisters.MODE_SELECTOR}], *R1
|
||||
inc R1
|
||||
movb [{DISK_INTERFACE_ADDR + DiskRegisters.DISK_SELECTOR}], *R1
|
||||
inc R1
|
||||
mov [{DISK_INTERFACE_ADDR + DiskRegisters.SECTOR_SELECTOR}], *R1
|
||||
addip R1, 2
|
||||
mov [{DISK_INTERFACE_ADDR + DiskRegisters.ADDRESS_SELECTOR}], *R1
|
||||
addip R1, 2
|
||||
mov [{DISK_INTERFACE_ADDR + DiskRegisters.DATA_SIZE}], *R1
|
||||
addip R1, 2
|
||||
mov [{DISK_INTERFACE_ADDR + DiskRegisters.MEMORY_ADDRESS}], *R1
|
||||
movb [{DISK_INTERFACE_ADDR + DiskRegisters.SIGNAL}], DiskSignals.START
|
||||
and FL, 0b1111111111111110 ## Disable interrupts
|
||||
mov FL, ACC
|
||||
_disk_load_from_ddd_blocking_wait_loop:
|
||||
## debug_profile_start 0xE0, DBGProfilerTime.MILLIS
|
||||
mov ACC, [{DISK_INTERFACE_ADDR + DiskRegisters.RO_STATUS}]
|
||||
## debug_profile_stop
|
||||
jne $_disk_load_from_ddd_blocking_wait_loop, DiskStatus.FREE
|
||||
or FL, 0b0000000000000001 ## Enable interrupts
|
||||
mov FL, ACC
|
||||
ret
|
||||
|
|
@ -2,7 +2,6 @@
|
|||
.entry _drake_loader_entry_point
|
||||
|
||||
@include <../bios_api.dss>
|
||||
@include <disk.dss>
|
||||
|
||||
.data
|
||||
## $_drake_logo_line_1 " ___ ___ ___ __ ______"
|
||||
|
|
@ -28,9 +27,9 @@ _drake_loader_entry_point:
|
|||
mov [$ddd.DataSize], 5120
|
||||
mov [$ddd.MemoryAddress], MemoryAddresses.RAM
|
||||
|
||||
push $ddd
|
||||
push 1
|
||||
call $_disk_load_from_ddd_blocking
|
||||
mov R9, $ddd
|
||||
mov R10, 0x12
|
||||
int 0x20
|
||||
|
||||
jmp MemoryAddresses.RAM
|
||||
hlt
|
||||
|
|
|
|||
Loading…
Reference in a new issue