54 lines
1 KiB
Text
54 lines
1 KiB
Text
.load 0x1380
|
|
.entry _drake_loader_entry_point
|
|
|
|
@include <../bios_api.dss>
|
|
|
|
.data
|
|
## $_drake_logo_line_1 " ___ ___ ___ __ ______"
|
|
## $_drake_logo_line_2 " / _ \/ _ \/ _ | / //_/ __/"
|
|
## $_drake_logo_line_3 " / // / , _/ __ |/ ,< / _/ "
|
|
## $_drake_logo_line_4 "/____/_/|_/_/ |_/_/|_/___/ "
|
|
## $_logo_padding " "
|
|
|
|
$ddd <DiskDriverData>
|
|
|
|
|
|
.code
|
|
_drake_loader_entry_point:
|
|
## mov R10, 0xE0
|
|
## int 0x30
|
|
## push 0
|
|
## call $_print_logo
|
|
|
|
mov [$ddd.Mode], DiskMode.READ
|
|
mov [$ddd.Disk], 0x00
|
|
mov [$ddd.Sector], 0x0000
|
|
mov [$ddd.Address], 0x0400
|
|
mov [$ddd.DataSize], 5120
|
|
mov [$ddd.MemoryAddress], MemoryAddresses.RAM
|
|
|
|
mov R9, $ddd
|
|
mov R10, 0x12
|
|
int 0x20
|
|
|
|
jmp MemoryAddresses.RAM
|
|
hlt
|
|
|
|
## _print_logo:
|
|
## mov R5, $_drake_logo_line_1
|
|
## mov R6, 0
|
|
## mov ACC, 6
|
|
## _print_logo_loop:
|
|
## mov R10, 0x0C
|
|
## inc R6
|
|
## mov R9, $_logo_padding
|
|
## int 0x30
|
|
## mov R9, R5
|
|
## int 0x30
|
|
## mov R10, 0x02
|
|
## int 0x30
|
|
## addip R5, 29
|
|
## jls $_print_logo_loop, R6
|
|
## ret
|
|
|
|
.fixed 512, 0x00
|