A51: Support for the SST89C5X

QUESTION

Does the A51 assembler support the SST 89C5x parts?

If so, is there a specific header file that I need to use?

ANSWER

Yes. A51 supports all 8051 derivatives, even the SST parts. The header file for this part is listed below.

;-------------------------------------------------------------------------------
; REG89C5x.INC
; SST89C5x Processor Declarations
; Copyright 1998 KEIL Software, Inc.
; This file was derived from REG51.INC
; Modified by Chris Boys 1998
;-------------------------------------------------------------------------------
$SAVE
$NOLIST
;
; BYTE Registers
P0 DATA 80H
P1 DATA 90H
P2 DATA 0A0H
P3 DATA 0B0H
PSW DATA 0D0H
ACC DATA 0E0H
B DATA 0F0H
SP DATA 81H
DPL DATA 82H
DPH DATA 83H
PCON DATA 87H
TCON DATA 88H
TMOD DATA 89H
TL0 DATA 8AH
TL1 DATA 8BH
TH0 DATA 8CH
TH1 DATA 8DH
IE DATA 0A8H
IP DATA 0B8H
SCON DATA 98H
SBUF DATA 99H
T2CON DATA 0C8H
RCAP2L DATA 0CAH
RCAP2H DATA 0CBH
TL2 DATA 0CCH
TH2 DATA 0CDH
WDTC DATA 0C0H
WDTD DATA 86H
SFDT DATA 0F8H
SFAL DATA 0F9H
SFAH DATA 0FAH
SFCM DATA 0FBH
SFCF DATA 0F7H


; BIT Registers
; PSW
CY BIT 0D7H
AC BIT 0D6H
F0 BIT 0D5H
RS1 BIT 0D4H
RS0 BIT 0D3H
OV BIT 0D2H
F1 BIT 0D1H
PARITY BIT 0D0H
; TCON
TF1 BIT 8FH
TR1 BIT 8EH
TF0 BIT 8DH
TR0 BIT 8CH
IE1 BIT 8BH
IT1 BIT 8AH
IE0 BIT 89H
IT0 BIT 88H
; T2CON
TF2 BIT 0CFH
EXF2 BIT 0CEH
RCLK BIT 0CDH
TCLK BIT 0CCH
EXEN2 BIT 0CBH
TR2 BIT 0CAH
C_T2 BIT 0C9H
CP_RL2 BIT 0C8H
; IE
EA BIT 0AFH
ET2 BIT 0ADH
ES BIT 0ACH
ET1 BIT 0ABH
EX1 BIT 0AAH
ET0 BIT 0A9H
EX0 BIT 0A8H
; IP
PT2 BIT 0BDH
PS BIT 0BCH
PT1 BIT 0BBH
PX1 BIT 0BAH
PT0 BIT 0B9H
PX0 BIT 0B8H
; P1
T2EX BIT 91H
T2 BIT 90H
; P3
RD BIT 0B7H
WR BIT 0B6H
T1 BIT 0B5H
T0 BIT 0B4H
INT1 BIT 0B3H
INT0 BIT 0B2H
TXD BIT 0B1H
RXD BIT 0B0H
; SCON
SM0 BIT 9FH
SM1 BIT 9EH
SM2 BIT 9DH
REN BIT 9CH
TB8 BIT 9BH
RB8 BIT 9AH
TI BIT 99H
RI BIT 98H
$RESTORE

SEE ALSO

• SST Devices - 8051 Family

Last Reviewed: Thursday, February 25, 2021