386_dbg.inc

VRTX 商用嵌入式实时操作系统

CODEMACRO     opprefx   ; macro to change default operand size
              db 66H    ; when operating in real mode
ENDM
%*define (OPEN_IO) (
  MOV   EAX, 08000H       ;Enable expanded I/O space
  OUT   REMAPCFGH, AL    ;  and unlock the re-map bits
  XCHG  AL, AH
  OUT   REMAPCFGL, AL
  OUT   REMAPCFG, EAX
 )

;;**********************DEBUGGING CODE**************************************
;; Use external clocking (COMCLK) @1.8432MHz, 9600 Baud (divisor = 0c)
%*define (INIT_SER_COM1) (
  %SetEXRegByte (LCR0, 080H)     ;Access divisor latch.
  %SetEXRegByte (DLH0,00H)      ;Set the divisor for the baud rate generator.
  %SetEXRegByte (DLL0,0CH)
  %SetEXRegByte (LCR0,03H )     ;Set parity, stop bits, and word size.
  %SetEXRegByte (IER0,00H )     ;Enable selected interrupts.
  %SetEXRegByte (IIR0,00H  )    ;Clear all interrupts at start.
)                         
%*define (INIT_SER_COM2) (
  %SetEXRegByte (LCR1, 080H)     ;Access divisor latch.
  %SetEXRegByte (DLH1,00H)      ;Set the divisor for the baud rate generator.
  %SetEXRegByte (DLL1,0CH)
  %SetEXRegByte (LCR1,03H )     ;Set parity, stop bits, and word size.
  %SetEXRegByte (IER1,00H )     ;Enable selected interrupts.
  %SetEXRegByte (IIR1,00H  )    ;Clear all interrupts at start.
)                         

%*define (OUT_CHAR_COM1 (CHAR)) (
    mov edx, LSR0
    in  al, dx
    bt  eax, 5
    jnc $ - 11
  %SetEXRegByte (TBR0,%CHAR)
)

%*define (OUT_CHARP_COM1 (CHAR)) (
    mov dl, LOW LSR0
    mov dh, HIGH LSR0
    in  al, dx
    bt  eax, 5
    jnc $ - 9
  %SetEXRegByteP (TBR0,%CHAR)
)

%*define (OUT_CHAR_COM2 (CHAR)) (
    mov dl, LOW LSR1
    mov dh, HIGH LSR1
    in  al, dx
    bt  eax, 5
    jnc $ - 9
  %SetEXRegByte (TBR1,%CHAR)
)

%*define (OUT_CHARP_COM2 (CHAR)) (
    mov edx, LSR1
    in  al, dx
    bt  eax, 5
    jnc $ - 11
  %SetEXRegByteP (TBR1,%CHAR)
)

%*define (INIT_SER) (
%IF (%DEBUG_COM EQ 1) THEN (
%INIT_SER_COM1
) ELSE(
%IF (%DEBUG_COM EQ 2) THEN (
%INIT_SER_COM2
)FI
)FI
)

%*define (OUT_CHAR (CHAR)) (
%IF (%DEBUG_COM EQ 1) THEN (
  %OUT_CHAR_COM1 (%CHAR)
 ) ELSE(
  %IF (%DEBUG_COM EQ 2) THEN (
  %OUT_CHAR_COM2 (%CHAR)
 )FI 
)FI
)

%*define (OUT_CHARP (CHAR)) (
%IF (%DEBUG_COM EQ 1) THEN (
   %OUT_CHARP_COM1 (%CHAR)
  ) ELSE(
  %IF (%DEBUG_COM EQ 2) THEN (
   %OUT_CHARP_COM2 (%CHAR)
 )FI
)FI
)