文档介绍：表2-13 输入指令表2-15 CPU控制指令
端口地址(PORT ADDRESS)
IMMED. REG. INDIR. 'NOP' 00
n (C) 'HALT' 76
INPUT 'IN' REG ADDRESSING A DB n ED 78 DISABLE INT '(DI)' F3
B ED 40 ENABLE INT '(EI)' FB
C ED 48 SET INT MODE 0 'IM0' ED 46
D ED 50 SET INT MODE 1 'IM1' ED 56
E ED 58 SET INT MODE 2 'IM2' ED 5E
H ED 60
L ED 68
'INI'-INPUT & Ine B≠0 REG. INDIR. (HL) ED A2 数据快输入命令(BLOCK MANDS
'INIR'- HL. Dec B ED B2
'IND'-INPUT & Dec b ED AA
'INDR'- HL. Dec IF B≠0 ED BA