Rename kernel to bdos

Makefile

@@ -1,8 +1,9 @@
 FLOPPY = 360
-BIOS = 0xFA00
+
+RAM = 0x10000
 
 PROGRAMS = $(patsubst %.asm,%.com,$(wildcard com/*.asm))
-DISTFILES = rdos.bin $(PROGRAMS)
+DISTFILES = bdos.bin $(PROGRAMS)
 ROMS =
 
 QEMU_ARCH = $(shell uname -m)
@@ -11,7 +12,7 @@ QEMU_ARGS = $(addprefix --option-rom ,$(ROMS))
 
 NASM = nasm
 NASM_ARGS = -s -Ilib -Plib/nasmcomp.asm -w-macro-params
-NASM_ARGS += -DBIOS=$(BIOS)
+NASM_ARGS += -DRAM=$(RAM)
 
 EMUL = utils/emul
 
@@ -32,9 +33,9 @@ endif
 
 default: fdimage.img
 
-# Kernel image
-rdos.bin: kernel/*.asm lib/*.asm
-	$(NASM) $(NASM_ARGS) -o $@ -I kernel kernel/main.asm
+# BDOS image
+bdos.bin: bdos/*.asm lib/*.asm
+	$(NASM) $(NASM_ARGS) -o $@ -I bdos bdos/main.asm
 
 # Boot sectors
 boot/%.bs: boot/%.asm

bios/8086.asm

@@ -1,9 +1,9 @@
-ORG BIOS
+ORG (RAM - 0x0800)
 CPU 8086
 
-DISKCX: EQU 0x40
-DISKDX: EQU 0x42
-DISKBX: EQU 0x44
+DISKCX: EQU 0x8
+DISKDX: EQU 0xA
+DISKBX: EQU 0xC
 
 JMP NEAR BOOT
 JMP NEAR WBOOT

boot/fat.asm

@@ -234,7 +234,7 @@ error:
   int 0x19
 
 kernel_name:
-  db "RDOS    BIN"
+  db "BDOS    BIN"
 
 times (0x1FE - ($-$$)) db 0