#include?“board.h“
#include?“7seg.h“

void?outp（unsigned?int?addr?char?data）
//?Output?byte?to?port
?{?__asm
????{?mov?dx?addr
??????mov?al?data
??????out?dx?al
????}
?}

char?inp（unsigned?int?addr）
//?Input?byte?from?port
?{?char?result;
???__asm
????{?mov?dx?addr
??????in?al?dx
??????mov?result?al
????}
???return?result;
?}

void?set_int（unsigned?char?int_no?void?*?service_proc）
?{?_asm
????{?push?es
??????xor?ax?ax
??????mov?es?ax
??????mov?al?int_no
??????xor?ah?ah
??????shl?ax?1
??????shl?ax?1
??????mov?si?ax
??????mov?ax?service_proc
??????mov?es:[si]?ax
??????inc?si
??????inc?si
??????mov?bx?cs
??????mov?es:[si]?bx
??????pop?es
????}
?}

/*?USART?*/

unsigned?char?putch_buffer[256];
unsigned?char?putch_out_pos;
unsigned?char?putch_pos;

void?putch_out（void）
//?Output?one?symbol?from?buffer?to?8251A?USART
?{?if?（putch_out_pos?==?putch_pos）
??????return;
???if（（inp（ADR_USART_STAT）?&?0x01）?==?0）
??????return;
???outp（ADR_USART_DATA?putch_buffer[putch_out_pos]）;
???putch_out_pos++;
?}

unsigned?char?putch（?unsigned?char?c?）
//?Put?one?symbol?into?buffer
?{?putch_buffer[putch_pos]?=?c;
???putch_pos++;
???return?c;
?}

void?prints（char*?s）
//?Print?string?using?putch（）?function
?{?char?c;
???while（s?&&?*s）
????{?c?=?*s;
??????if?（c?==?‘\r‘）
?????????c?=?‘\n‘;
??????putch（c）;
??????s++;
????}
?}

void?printui（unsigned?int?i）
//?Print?unsigned?int?using?putch（）?function
?{?unsigned?char?val;
???unsigned?int?temp?=?10000;
???unsigned?char?printed=0;
???while?（temp?>=?1）
????{?val?=?（i?/?temp）?%?10;
??????if?（（val!=0）?||?printed?||?（temp?==?1））
???????{?putch（val?+?‘0‘）;
?????????printed?=?1;
???????}
??????if?（temp?==?1）
?????????break;
??????temp?/=?10;
????}
?}

void?setup_usart（void）
//?8251?USART?Setup
?{?/*?setup?USART?*/
???outp（ADR_USART_CMD?0x7D）;?/*?ED?*/
???outp（ADR_USART_CMD?0x07）;?/*?RxEn?TxEn?DTRa?*/

???putch_out_pos?=?0;
???putch_pos?=?0;
?}

/*?Timer?*/

signed?char?delay;

int?sound_enabled;
int?display_enabled;

void?sound_nmi（void）
?{?delay++;
???if?（delay?>=?10）
??????delay?=?-delay;???
???outp（ADR_TIMER_CONTROL?TIMER_COUNTER2?|?TIMER_MODE2?|?TIMER_LSB）;
???outp（ADR_TIMER_DATA2?ABS（delay）+0x40）;
?}

void?_interrupt?_far?nmi_handler（void）;

void?setup_nmi（void）
//?Set?NMI?Timer?at?50Hz.
?{?set_int（0x02?（void?*）&nmi_handler）;

???outp（ADR_TIMER_CONTROL?TIMER_COUNTER1?|?TIMER_MODE2?|?TIMER_LSB_MSB）;
???outp（ADR_TIMER_DATA1?0xD0）;	
???outp（ADR_TIMER_DATA1?0x07）;	
?}

/*?PIO?*/

//?Value?to?be?displayed
unsigned?int?display_value;

//?Current?display?position
unsigned?char?cur_display_pos;
//?Current?dispaly?segments
unsigned?char?cur_display_segs;

unsigned?char?keys[16];

#define?KEY_7	0
#define?KEY_8	1
#define?KEY_9	2
#define?KEY_DIV	3
#define?KEY_4	4
#define?KEY_5	5
#define?KEY_6	6
#define?KEY_MUL	7
#define?KEY_1	8
#define?KEY_2	9
#define?KEY_3	10
#

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4769??2012-06-28?09:45??8086?Demo?Board\7seg.h

?????文件???????1191??2018-08-21?23:15??8086?Demo?Board\80C31\main.asm

?????文件???????6422??2012-06-28?09:45??8086?Demo?Board\board.c

?????文件???????2030??2012-06-28?09:45??8086?Demo?Board\board.h

?????文件???????7860??2012-06-28?09:45??8086?Demo?Board\calc.c

?????文件??????14576??2012-06-28?09:45??8086?Demo?Board\calc.exe

?????文件???????1464??2012-06-28?09:45??8086?Demo?Board\calc.h

?????文件?????????55??2012-06-28?09:45??8086?Demo?Board\cleanup.bat

?????文件????????281??2012-06-28?09:45??8086?Demo?Board\compile.bat

?????文件??????95700??2012-08-23?10:30??8086?Demo?Board\DemoBoard.pdsprj

?????文件???????3329??2018-08-22?22:58??8086?Demo?Board\DemoBoard.pdsprj.LAPTOP-L37PB4J6.GaoMin.workspace

?????文件???????3072??2012-06-28?09:45??8086?Demo?Board\math.lib

?????文件????????255??2012-06-28?09:45??8086?Demo?Board\rtl.asm

?????目錄??????????0??2018-08-21?23:15??8086?Demo?Board\80C31

?????目錄??????????0??2018-08-21?23:15??8086?Demo?Board

-----------?---------??----------?-----??----

???????????????141004????????????????????15