written assembly code for 6502 68000,Z80,PIC,i86 from 8086 to P4.
many small tools for dos-windows in real and protected mode. Written full protected mode operating system in 16 and 32 bit mode
for 286 to P4 - all low level in assembler, dos immulation,highmem,dpmi
Much hardware programming.
Low level encryption routines
ntfs file system.
Linux low level programming.
Floating point programming in
assembler - also SSE MMX instructions.
Fluent in english,dutch,spanish,some