MEAPC-C主控板的内存分布见图2-3,它可以寻址2K的地址范围。
202H~7FFH 1.5K程序空间
200H~201H 程序长度
100H~1FFH 系统子程序空间
00H~FFH 外部FLASHRAM 16个位 16个RAM
MEAPC-C主控板的内存分布 图2-3
§ 2-4 MEAPC-P编程板的引脚功能
MEAPC-P编程板负责为MEAPC-C主控板编程,它自带一个2K的备份程序存储器,便于复制程序;两位LED数码管显示指令和数据;5个按键负责将指令、数据输入MEAPC-C主控板。
1、MEAPC-P编程板的引脚(见图2-5)
2、MEAPC-P编程板的按键分布(见图2-4)
MEAPC-P编程板的按键功能 表:2-2
键号 功能 键号 功能
K1 LED数码管的数值加一 K4 确认并存入E224
K2 LED数码管的数值减一 K5 复位MEPAPC-C
K3 右移一位
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