TY  - BOOK
AU  - Penfold,R.A.
AU  - Penfold,J.W.
TI  - An introduction to Z80 machine code
SN  - 0859341275
PY  - 1984///
CY  - London : 
PB  - Babani, 
KW  - Machine codes (Electronic computers)
KW  - Zilog Z-80 (Microprocessor)
KW  - Programming
ER  -