Remove nasm dependency

Makefile

@@ -7,8 +7,6 @@ DISTFILES = $(KERNEL) $(PROGRAMS)
 FLOPPY = 1440
 
 # Programs used for building
-NASM = nasm
-NASM_ARGS = -s --before "cpu 8086" -DPRODUCT=$(PRODUCT) -DVERSION=$(VERSION)
 AS = host/as
 SYS = ./sys.elf
 

README.md

@@ -1,30 +1,18 @@
 ## Primary goals
 
-- Run on 8086 or up
+- Run on 8086
 - Be able to load and execute a COM program from disk
-- Support for running programs in the NEC V30 8080 emulation mode
-
-## Secondary goals
-
-- CP/M syscall compatibility
-- Terminal emulator for COM1 (like picocom on linux)
-- Boot linux
-- Editor (nano or ed-like)
 - Self-hosting assembler
 
 ## Building
 
-You can generate a 3.5" floppy image with `make fd1440.img`, a 5.25" floppy with `make fd160.img`.
-
 Build requirements:
 
 - make
-- nasm
+- busybox awk for bootstrap assembler
 - mtools >=4.0.20 (Debian buster or up)
 
 Useful for testing:
 
 - C compiler
 - qemu-system-i386
-
-The Makefile has other potentially interesting targets.