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fasm-putch
| Author | SHA1 | Date | |
|---|---|---|---|
33e5891931
|
10 changed files with 213 additions and 273 deletions
2
.gitignore
vendored
2
.gitignore
vendored
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|
@ -4,5 +4,3 @@
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|||
*.bin
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mnt/
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build/
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bx_enh_dbg.ini
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serial.out
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|
|
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35
Makefile
35
Makefile
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@ -4,43 +4,22 @@ clean:
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start32.bin: src/*
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fasm src/start32.asm start32.bin
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image: start32.bin mount grub-cfg roska.img mnt/roska/
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image: start32.bin mount
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cp start32.bin mnt/roska/
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sync
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qemu-run: image roska.img
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qemu-multiboot: start32.bin
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qemu-system-i386 -kernel start32.bin -serial stdio
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qemu-image: image
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qemu-system-i386 roska.img -serial stdio
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bochs-run: image roska.img
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touch serial.out
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bochs -qf bochsrc.txt
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mount: roska.img mnt/
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@if ! mountpoint -q "mnt/"; then \
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sudo mount -o loop,offset=1048576,umask=177,dmask=022,uid=$(shell id -u),gid=$(shell id -g) roska.img mnt/; \
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fi;
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umount:
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@if mountpoint -q "mnt/"; then \
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sudo umount mnt/; \
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fi;
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@sudo umount mnt
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mnt/:
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@mkdir -p mnt
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mnt/roska/: mount roska.img
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@mkdir -p mnt/roska
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@mkdir mnt
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build/:
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@mkdir build
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roska.img: mnt/
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dd if=/dev/zero of=roska.img bs=1k count=16128
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echo 'type=83' | sudo sfdisk roska.img
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sudo losetup /dev/loop0 roska.img
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sudo losetup /dev/loop1 roska.img -o1048576
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sudo mkdosfs -F32 -f 2 /dev/loop1
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sudo mount /dev/loop1 mnt/
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sudo grub-install --target=i386-pc --root-directory=mnt --boot-directory=mnt/boot --no-floppy --modules="normal part_msdos multiboot" /dev/loop0
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sudo umount mnt/
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sudo losetup -d /dev/loop1
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sudo losetup -d /dev/loop0
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grub-cfg: grub.cfg mount
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cp grub.cfg mnt/boot/grub/grub.cfg
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lo-unsetup: umount
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sudo losetup -d /dev/loop1
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sudo losetup -d /dev/loop0
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14
bochsrc.txt
14
bochsrc.txt
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@ -1,14 +0,0 @@
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display_library: x, options="gui_debug"
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magic_break: enabled=1
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romimage: file=$BXSHARE/BIOS-bochs-legacy
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vgaromimage: file=$BXSHARE/VGABIOS-lgpl-latest
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clock: sync=realtime
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cpu: ips=4294967295, reset_on_triple_fault=false
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megs: 128
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ata0: enabled=1, ioaddr1=0x1f0, ioaddr2=0x3f0, irq=14
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ata0-master: type=disk, mode=flat, path=roska.img, cylinders=32, heads=16, spt=63
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boot: disk
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# Use `bximage` to get disk geometry
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# Serial is piped to serial.out for your `tail`ing sweetness
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com1: enabled=1, mode=file, dev=serial.out
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3
grub.cfg
3
grub.cfg
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@ -1,3 +0,0 @@
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menuentry "rOSka" {
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multiboot /roska/start32.bin
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}
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127
src/font.asm
127
src/font.asm
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@ -1,89 +1,38 @@
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;;; Resolution: 8x16
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kfontbasicascii:
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;; 0 NULL
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db 11001100b
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db 11001100b
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db 00110011b
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db 00110011b
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db 11001100b
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db 11001100b
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db 00110011b
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db 00110011b
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db 11001100b
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db 11001100b
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db 00110011b
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db 00110011b
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db 11001100b
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db 11001100b
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db 00110011b
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db 00110011b
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;; 1-31 control characters
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rb 30*16
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;; 32 Space
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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;; 33 !
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db 00000000b
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db 00000000b
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db 00000000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00000000b
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db 00000000b
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db 00011000b
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db 00011000b
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db 00000000b
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;; 34 "
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db 00000000b
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db 01100110b
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db 01100110b
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db 01100110b
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db 01100110b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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;; 35 #
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db 00000000b
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db 00000000b
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db 00000000b
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db 01100110b
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db 01100110b
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db 11111111b
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db 11111111b
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db 01100110b
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db 01100110b
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db 11111111b
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db 11111111b
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db 01100110b
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db 01100110b
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db 00000000b
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db 00000000b
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db 00000000b
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;; Thank you Terminus for letting us use this font under SIL licence
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kfont:
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; controlchars
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times 31 db 0x00000000000000000000000000000000
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; space
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db 11000000b
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db 10000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000001b
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db 00000001b
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db 00000001b
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db 00000001b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000001b
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db 00000011b
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; !
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db 00000000b
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db 00000000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00011000b
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db 00000000b
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db 00011000b
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db 00011000b
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db 00000000b
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db 00000000b
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db 00000000b
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db 00000000b
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@ -1,19 +1,11 @@
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macro kputpixel x*, y*, r*, g*, b* {
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push b ;b
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push g ;g
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push r ;r
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push y ;y
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push x ;x
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call putpixel
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add esp, 4*5
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}
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;; x, y, r, g, b
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;; x, y, brightness
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putpixel:
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push ebp
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mov ebp, esp
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push eax
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push ebx
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push ecx
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push edi
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; check pixel is in screen
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@ -36,37 +28,74 @@ putpixel:
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add edi, eax
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; Brightness
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mov eax, [ebp + 16]
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; Poke videomemory
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xor eax, eax
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mov ebx, [ebp+16]
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mov cl, [mbootinfo.fb_rpos]
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shl ebx, cl
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or eax, ebx
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mov ebx, [ebp+20]
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mov cl, [mbootinfo.fb_gpos]
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shl ebx, cl
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or eax, ebx
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mov ebx, [ebp+24]
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mov cl, [mbootinfo.fb_bpos]
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shl ebx, cl
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or eax, ebx
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cmp [mbootinfo.fb_bpp], 32
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jne .bpp24
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stosd
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jmp .done
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.bpp24:
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stosb
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shr eax, 8
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stosb
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shr eax, 8
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stosb
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cld
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rep stosb
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.done:
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pop edi
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pop ecx
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pop ebx
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pop eax
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pop ebp
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ret
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; char, x, y
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putchar:
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push ebp
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mov ebp, esp
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push eax
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push ebx
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push ecx
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push edx
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; skip non printable
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mov eax, [ebp+8] ;char
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cmp eax, 0x20
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jl .unprintable
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cmp eax, 0x7e
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jg .unprintable
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mov ecx, 16
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mul ecx
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mov esi, [kfont+eax]
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mov ebx, [ebp+12] ;x
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mov edx, [ebp+16] ;y
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cld
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xor eax, eax
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.loop:
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lodsb ; load font row to al
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mov ah, 0
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.loop2:
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shl al
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jnc .blankpix
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; draw a pixel
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push 0xff
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push edx ;x
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push ecx ;y
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.blankpix:
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inc ah
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cmp ah, 8
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je .loop
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.done:
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pop edx
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pop ecx
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pop ebx
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pop eax
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pop ebp
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ret
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.unprintable:
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push .unprintablemsg
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call serialwrite
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add esp, 4
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jmp .done
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.unprintablemsg: db 10,"Err: Unprintable char not handled!", 0
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include "src/font.asm"
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|
|
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29
src/itoa.asm
29
src/itoa.asm
|
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@ -1,12 +1,8 @@
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;; Modified from: https://gist.github.com/SplittyDev/8e728627012e57ac0deac196660014fb
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|
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; __itoa(src int, target addr, base)
|
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;target address returned in EAX
|
||||
;EBX, EBP, ESP preserved as our calling convention,
|
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;refer to docs or something
|
||||
|
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;
|
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; Routine to convert a 32-bit integer to a string.
|
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; Registers are preserved.
|
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;
|
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; EAX: Source integer
|
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; EBX: Target address
|
||||
|
|
@ -30,28 +26,19 @@
|
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; ECX: Target address (active)
|
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; EDX: Target address (temporary)
|
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;
|
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; return:
|
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; put original target at EAX
|
||||
; (we trust this blindly)
|
||||
|
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macro kuitoa src*, dest*, base* {
|
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push base
|
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push dest
|
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push src
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call __uitoa
|
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add esp, 3*4
|
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}
|
||||
|
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__uitoa:
|
||||
.start:
|
||||
push ebp
|
||||
mov ebp, esp
|
||||
|
||||
push eax
|
||||
push ebx
|
||||
push ecx
|
||||
push edx
|
||||
|
||||
mov eax, [ebp+8]
|
||||
mov ebx, [ebp+12]
|
||||
mov ecx, [ebp+16]
|
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mov ecx, [ebp+12]
|
||||
mov ebx, [ebp+16]
|
||||
|
||||
mov edx, ecx
|
||||
mov ecx, ebx
|
||||
|
|
@ -88,9 +75,11 @@ __uitoa:
|
|||
dec ecx
|
||||
jmp .reverse
|
||||
.end:
|
||||
pop edx
|
||||
pop ecx
|
||||
pop ebx
|
||||
pop eax
|
||||
|
||||
mov eax, [ebp+12] ; Return target address
|
||||
pop ebp
|
||||
ret
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,7 @@
|
|||
mbootgetinfo:
|
||||
push ebp
|
||||
mov ebp, esp
|
||||
push ebx
|
||||
push esi
|
||||
push edi
|
||||
cld
|
||||
|
|
@ -9,23 +10,23 @@ mbootgetinfo:
|
|||
cmp eax, 0x2badb002
|
||||
jne mbootnomagic
|
||||
|
||||
mov edx, [ebp+12]
|
||||
mov eax, [edx]
|
||||
mov ebx, [ebp+12]
|
||||
mov eax, [ebx]
|
||||
mov [mbootinfo.flags], eax
|
||||
|
||||
;; Get memoryinformation
|
||||
test eax, 1b
|
||||
jz mbootnomeminfo
|
||||
mov eax, [edx+4]
|
||||
mov eax, [ebx+4]
|
||||
mov [mbootinfo.mem_lower], eax
|
||||
mov eax, [edx+8]
|
||||
mov eax, [ebx+8]
|
||||
mov [mbootinfo.mem_upper], eax
|
||||
|
||||
;; Get videoinformation
|
||||
test [mbootinfo.flags], (1 shl 02)
|
||||
jz mbootnovideoinfo
|
||||
|
||||
mov esi, edx
|
||||
mov esi, ebx
|
||||
add esi, 88
|
||||
mov eax, [esi]
|
||||
mov [mbootinfo.fb_addr], eax
|
||||
|
|
@ -53,8 +54,6 @@ mbootgetinfo:
|
|||
mov [mbootinfo.fb_type], al
|
||||
inc esi
|
||||
|
||||
;garbage?
|
||||
add esi, 2
|
||||
;; r/g/b positions and masks
|
||||
mov ecx, 6
|
||||
mov edi, mbootinfo.fb_rpos
|
||||
|
|
@ -63,12 +62,13 @@ mbootgetinfo:
|
|||
.bytesppcalc:
|
||||
xor eax, eax
|
||||
mov al, [mbootinfo.fb_bpp]
|
||||
mov edx, 8
|
||||
div dl
|
||||
mov ebx, 8
|
||||
div bl
|
||||
mov [mbootinfo.fb_bytespp], al
|
||||
.done:
|
||||
pop edi
|
||||
pop esi
|
||||
pop ebx
|
||||
pop ebp
|
||||
ret
|
||||
|
||||
|
|
|
|||
|
|
@ -1,14 +1,9 @@
|
|||
SERIAL_PORT equ 0x3f8
|
||||
serialinitialized db 0
|
||||
|
||||
; Write null terminated string in address str_pointer to serial
|
||||
macro serw [str_pointer*] {
|
||||
push str_pointer
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
}
|
||||
|
||||
serialinit:
|
||||
push ax
|
||||
|
||||
;Disable ints
|
||||
mov dx, SERIAL_PORT+1
|
||||
mov al, 0x00
|
||||
|
|
@ -59,6 +54,7 @@ serialinit:
|
|||
out dx, al
|
||||
mov [serialinitialized], 1
|
||||
.end:
|
||||
pop ax
|
||||
ret
|
||||
.errormsg db "Serial init failed", 0
|
||||
|
||||
|
|
@ -68,6 +64,7 @@ serialwrite:
|
|||
push ebp
|
||||
mov ebp, esp
|
||||
push esi
|
||||
push ax
|
||||
cld
|
||||
mov esi, [ebp+8]
|
||||
.loop:
|
||||
|
|
@ -83,6 +80,7 @@ serialwrite:
|
|||
out dx, al
|
||||
jmp .loop
|
||||
.done:
|
||||
pop ax
|
||||
pop esi
|
||||
pop ebp
|
||||
ret
|
||||
|
|
|
|||
143
src/start32.asm
143
src/start32.asm
|
|
@ -13,7 +13,7 @@ MB_CHECKSUM equ -(MB_HEADER_MAGIC + MB_HEADER_FLAGS)
|
|||
|
||||
VWIDTH equ 640
|
||||
VHEIGHT equ 480
|
||||
VDEPTH equ 32
|
||||
VDEPTH equ 24
|
||||
|
||||
multiboot:
|
||||
dd MB_HEADER_MAGIC
|
||||
|
|
@ -29,13 +29,6 @@ multiboot:
|
|||
dd VHEIGHT ; video height
|
||||
dd VDEPTH ; video depth
|
||||
|
||||
; Includes yayyy
|
||||
include "src/serial.asm"
|
||||
include "src/mbootinfo.asm"
|
||||
include "src/itoa.asm"
|
||||
include "src/framebuffer.asm"
|
||||
include "src/roskalogoraw.asm"
|
||||
|
||||
start:
|
||||
; Setup stack
|
||||
mov ebp, stack_top
|
||||
|
|
@ -45,60 +38,77 @@ start:
|
|||
push eax
|
||||
|
||||
call serialinit
|
||||
|
||||
serw stuff.bootmsg
|
||||
push stuff.bootmsg
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
|
||||
call mbootgetinfo
|
||||
add esp, 2*4
|
||||
|
||||
push stuff.fbaddrmsgpfx
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
|
||||
sub esp, 36 ;Reserve stack for return
|
||||
mov ebx, esp ;Store str buff addr
|
||||
push dword esp ;Destination address
|
||||
push dword 16 ;Base
|
||||
push dword [mbootinfo.fb_addr] ;source
|
||||
call __uitoa
|
||||
add esp, 3*4
|
||||
push esp
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
|
||||
kuitoa [mbootinfo.fb_addr], ebx, 16
|
||||
serw stuff.fbaddrmsgpfx, ebx
|
||||
push stuff.fbdimensionsmsgpfx
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
push dword esp ;destination address
|
||||
push dword 10 ;base
|
||||
push dword [mbootinfo.fb_width]
|
||||
call __uitoa
|
||||
add esp, 3*4
|
||||
push esp
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
push stuff.x
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
|
||||
kuitoa [mbootinfo.fb_width], ebx, 10
|
||||
serw stuff.fbdimensionsmsgpfx, ebx, stuff.x
|
||||
push dword esp ;destination address
|
||||
push dword 10 ;base
|
||||
push dword [mbootinfo.fb_height]
|
||||
call __uitoa
|
||||
add esp, 3*4
|
||||
push esp
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
push stuff.x
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
|
||||
kuitoa [mbootinfo.fb_height], ebx, 10
|
||||
serw ebx, stuff.x
|
||||
|
||||
movzx eax, byte [mbootinfo.fb_bpp]
|
||||
kuitoa eax, ebx, 10
|
||||
serw ebx
|
||||
|
||||
|
||||
movzx eax, byte [mbootinfo.fb_rpos]
|
||||
kuitoa eax, ebx, 10
|
||||
serw stuff.rpostxt, ebx
|
||||
|
||||
movzx eax, byte [mbootinfo.fb_gpos]
|
||||
kuitoa eax, ebx, 10
|
||||
serw stuff.gpostxt, ebx
|
||||
|
||||
movzx eax, byte [mbootinfo.fb_bpos]
|
||||
kuitoa eax, ebx, 10
|
||||
serw stuff.bpostxt, ebx
|
||||
|
||||
|
||||
movzx eax, byte [mbootinfo.fb_rmasksize]
|
||||
kuitoa eax, ebx, 10
|
||||
serw stuff.rmasksizetxt, ebx
|
||||
|
||||
movzx eax, byte [mbootinfo.fb_gmasksize]
|
||||
kuitoa eax, ebx, 10
|
||||
serw stuff.gmasksizetxt, ebx
|
||||
|
||||
movzx eax, byte [mbootinfo.fb_bmasksize]
|
||||
kuitoa eax, ebx, 10
|
||||
serw stuff.bmasksizetxt, ebx
|
||||
push dword esp ;destination address
|
||||
push dword 10 ;base
|
||||
xor eax, eax
|
||||
mov al, [mbootinfo.fb_bpp]
|
||||
push dword eax
|
||||
call __uitoa
|
||||
add esp, 3*4
|
||||
push esp
|
||||
call serialwrite
|
||||
add esp, 4
|
||||
|
||||
add esp, 36 ;Clean reserved uitoa return string from stack
|
||||
|
||||
; Draw a green test pixel to bottom-right
|
||||
kputpixel VWIDTH-1, VHEIGHT-1, 0x00, 0xff, 0x00
|
||||
; Draw a test pixel to bottom right corner
|
||||
mov eax, 0xff
|
||||
mov ebx, 767
|
||||
mov ecx, 1023
|
||||
push 0xff
|
||||
push 479
|
||||
push 639
|
||||
call putpixel
|
||||
add esp, 3*4
|
||||
|
||||
; Draw a predefined logo in magenta to top-left
|
||||
rOSkalogodraw:
|
||||
mov esi, roskalogo
|
||||
mov eax, 0 ;Brightness
|
||||
|
|
@ -106,12 +116,13 @@ rOSkalogodraw:
|
|||
mov ecx, 0 ;x
|
||||
.loop:
|
||||
lodsb
|
||||
|
||||
push ecx
|
||||
push eax
|
||||
kputpixel ecx, ebx, eax, 0x00, eax
|
||||
pop eax
|
||||
push ebx
|
||||
push ecx
|
||||
call putpixel
|
||||
pop ecx
|
||||
pop ebx
|
||||
pop eax
|
||||
|
||||
inc ecx
|
||||
cmp byte cl, [roskalogo.w]
|
||||
|
|
@ -121,32 +132,36 @@ rOSkalogodraw:
|
|||
cmp byte bl, [roskalogo.h]
|
||||
jne .loop
|
||||
.done:
|
||||
jmp hang
|
||||
|
||||
push byte 0x21
|
||||
push byte 0x21
|
||||
push byte 0x21
|
||||
call putchar
|
||||
add esp, 3*4
|
||||
|
||||
jmp hang
|
||||
|
||||
hang:
|
||||
serw .msg
|
||||
push .msg
|
||||
call serialwrite
|
||||
cli
|
||||
.loop:
|
||||
hlt
|
||||
jmp .loop
|
||||
.msg db 10, "Halting...", 10, 0
|
||||
|
||||
include "src/serial.asm"
|
||||
include "src/mbootinfo.asm"
|
||||
include "src/itoa.asm"
|
||||
include "src/framebuffer.asm"
|
||||
include "src/roskalogoraw.asm"
|
||||
|
||||
stuff:
|
||||
.bootmsg db 10, "=== rOSka ===", 10, 0
|
||||
.fbaddrmsgpfx db 10, "Framebuffer address: 0x", 0
|
||||
.fbdimensionsmsgpfx db 10, "Framebuffer dimensions: ", 0
|
||||
.x db "x", 0
|
||||
|
||||
|
||||
.rpostxt db 10, "rPos: ", 0
|
||||
.gpostxt db 10, "gPos: ", 0
|
||||
.bpostxt db 10, "bPos: ", 0
|
||||
.rmasksizetxt db 10, "rMaskSize: ", 0
|
||||
.gmasksizetxt db 10, "gMaskSize: ", 0
|
||||
.bmasksizetxt db 10, "bMaskSize: ", 0
|
||||
|
||||
align 4096
|
||||
bss_start:
|
||||
;align 4096
|
||||
|
|
|
|||
Loading…
Reference in a new issue