📄 isd51.a51
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$NOMOD51
;------------------------------------------------------------------------------
; ISD51 In-System Debugger for 8051 based microcontrollers
; Copyright KEIL ELEKTRONIK GmbH and Keil Software, Inc. 2000 - 2003
; Version 2.03
;------------------------------------------------------------------------------
; ISD51.A51: This module needs to be added to the user application
;
; Copy this file to your project folder and add the copy to your uVision2
; project. You can customize several parameters of the ISD51 In-System
; Monitor within this configuration file.
;
; ISD51 V2.00: added new features like user I/O and hardware breakpoints.
; ISD51 V2.01: 'Stop' command did not break program execution on targets that
; do not have hardware breakpoints.
; ISD51 V2.02: fixed a problem when single stepping through putchar
;
; ISD51 V2.03: adapted for TI AUX Interupt (EAI Bit save/restore added)
;------------------------------------------------------------------------------
#include "ISD51.H" /* ISD51 Configuration Parameters */
;------------------------------------------------------------------------------
;----------------- !!! Do not modify code sections below !!! ------------------
;------------------------------------------------------------------------------
NAME ISD51_CONFIGURATION
SBYTE MACRO ; Transmit Byte in ACC via serial UART
JNB_TI $
CLR_TI
WR_SBUF ; MOV SBUF,A
ENDM
RBYTE MACRO ; Read one Byte from serial UART to ACC
RD_SBUF ; MOV A,SBUF
CLR_RI
ENDM
GBYTE MACRO ; Receive one Character from 8051 Serial Interface
JNB_RI $
RBYTE
ENDM
/* 8051 SFR Register addresses */
sfr P0 = 0x80;
sfr P1 = 0x90;
sfr P2 = 0xA0;
sfr P3 = 0xB0;
sfr PSW = 0xD0;
sfr ACC = 0xE0;
sfr B = 0xF0;
sfr SP = 0x81;
sfr DPL = 0x82;
sfr DPH = 0x83;
sfr AUXR = 0x8E;
sfr PH_FMCON = 0xE4; // for Philips LPC900 devices
sfr PH_FMADRL = 0xE6; // for Philips LPC900 devices
?ISD?RAMTOP EQU RAMSIZE-1
?ISD?CMP_S EQU CMP_START
?ISD?CMP_E EQU CMP_END
EXTRN NUMBER (?ISD?CORE)
PUBLIC ?ISD?RAMTOP
PUBLIC ?ISD?RESTART
PUBLIC ?ISD?CMDLOOP
PUBLIC ?ISD?GETBYTE
PUBLIC ?ISD?SENDBYTE
PUBLIC ?ISD?READSFR00
PUBLIC ?ISD?READSFR01
PUBLIC ?ISD?READSFR02
PUBLIC ?ISD?READSFR03
PUBLIC ?ISD?READSFR04
PUBLIC ?ISD?READSFR05
PUBLIC ?ISD?READSFR06
PUBLIC ?ISD?READSFR07
PUBLIC ?ISD?READSFR08
PUBLIC ?ISD?READSFR09
PUBLIC ?ISD?READSFR10
PUBLIC ?ISD?READSFR11
PUBLIC ?ISD?READSFR12
PUBLIC ?ISD?READSFR13
PUBLIC ?ISD?READSFR14
PUBLIC ?ISD?READSFR15
PUBLIC ?ISD?READSFR16
PUBLIC ?ISD?READSFR17
PUBLIC ?ISD?READSFR18
PUBLIC ?ISD?WRITESFR00
PUBLIC ?ISD?WRITESFR01
PUBLIC ?ISD?WRITESFR02
PUBLIC ?ISD?WRITESFR03
#ifdef PHILIPS_LPC900
PUBLIC ?ISD?WRITESFR04
PUBLIC ?ISD?WRITESFR05
#endif
PUBLIC ?ISD?VERSION
PUBLIC ?ISD?CMP_S
PUBLIC ?ISD?CMP_E
PUBLIC __isd_init
PUBLIC ?ISD?CBLK_SIZE ; block size for FLASH IAP Routine
?ISD?CBLK_SIZE EQU CBLK_SZ
CBLK EQU 10H ; Start address for FLASH buffer
?ISD?VERSION EQU 203 ; Version 2.03
#ifdef TI_MSC1210 // added for TI MSC121x
?BI?ISD51 SEGMENT BIT
RSEG ?BI?ISD51
SaveEAI: DBIT 1 ; Save TI AUX Interrupt Enable bit
#endif // for TI MSC121x
?PR?ISD51 SEGMENT CODE INBLOCK
CSEG AT SINTRVEC ; Serial Interrupt
LJMP SerialInterrupt
#ifdef TI_MSC1210_BREAKS
;-------- Chip Specific Break Features -----------------------
PUBLIC ?ISD?HWBREAKS
PUBLIC ?ISD?SETHWBREAK
BREAK_CODE EQU 0x8000
BREAK_XDATA EQU 0x4000
?ISD?HWBREAKS EQU (BREAK_CODE OR BREAK_XDATA) + 2
BPCTRL DATA 0A9H ; BPCTRL.7 := breakpoint interrupt request
; BPCTRL.1 := 0=code break, 1=xdata break
; BPCTRL.0 := breakpoint enable
BREAKL DATA 0AAH ; break low address
BREAKH DATA 0ABH ; break high address
MEMCTRL DATA 095H ; MEMCTRL.7 := breakpoint select
PIREG DATA 096H ; PIREG.0 := breakpoint interrupt enable
EICON DATA 0D8H ; Extended Interrupt CONtrol register
PFI BIT 0DCH ; Interrupt Request Flag for power fail and debug
CSEG AT 33H ; interupt vector for breakpoints
LJMP HWBreakEntry
RSEG ?PR?ISD51
USING 0 ; Assume Registerbank 0 for ARx symbols
; Entry Point for HW Breakpoint
HWBreakEntry: PUSH PSW
PUSH ACC
MOV A,BPCTRL
JB ACC.7,HWBreakpoint
POP ACC
POP PSW
LJMP 06BH ; Other interrupt sources such as A/D Converter
; SPI, PFI and (milli)second timer sharing the
; interrupt vector at address 33H must be
; relocated to address 6BH (interrupt 13)!
HWBreakpoint: MOV PSW,#0 ; Select Register Bank 0
PUSH AR0
PUSH AR1
MOV A,MEMCTRL ; Get Breakpoint reason
RLC A
MOV A,#0F8H/2
RLC A ; 0F8H->Break 0, 0F9H->Break 1
ORL BPCTRL,#80H ; Clear Breakpoint interrupt
CLR PFI
SET_TI
SJMP Send7Bytes
;--------------------------------------------------------------------------
; Command: Set Hardware Break Register
; LOW (?ISD?SETHWBREAK), HIGH (?ISD?SETHWBREAK), BPcode, LOW (bp_addr), HIGH (bp_addr)
; BPcode.0..2 := select hardware break register 0..7
; BPcode.3 := reserved, currently set to 0
; BPcode.4 := 0 disable breakpoint, 1 enable breakpoint
; BPcode.5 := 0 xdata breakpoint, 1 code breakpoint
; BPcode.6 := reserved, currently set to 0
; BPcode.7 := reserved, currently set to 0
?ISD?SETHWBREAK:
XCH A,R0
SWAP A
ORL MEMCTRL,#80H ; BPSEL=1; select hw breakpoint 1
JBC ACC.4,SelectHWbp1
ANL MEMCTRL,#7FH ; BPSEL=0; select hw breakpoint 0
SelectHWbp1: XCH A,R0
MOV BPCTRL,#80H ; disable breakpoint, clear pending breakpoints
MOV BREAKL,A
ACALL ?ISD?GETBYTE
MOV BREAKH,A
MOV BPCTRL,R0
AJMP ?ISD?CMDLOOP
;--------------------------------------------------------------------------
#endif
RSEG ?PR?ISD51
USING 0 ; Assume Registerbank 0 for ARx symbols
#if CBLK_SZ != 0 /* Hareware Breakpoints */
PUBLIC ?ISD?HWCALL
?ISD?HWCALL: PUSH PSW
PUSH ACC
MOV A,#0FDH ; Call Break
SJMP CallBreak
#endif
SerialInterrupt:
PUSH PSW
PUSH ACC
JNB_RI NoSerBreak
RBYTE ; Check for 0A5H Break Code
#if ISD_GETKEY
MOV _ISD_CHAR,A
#endif
CJNE A,#0A5H,ReturnI
#if CBLK_SZ == 0 /* Software Breakpoints */
SET_TI
#endif
NoSerBreak: MOV A,#0FFH
CallBreak: MOV PSW,#0 ; Select Register Bank 0
PUSH AR0
PUSH AR1
MOV R0,#?ISD?RAMTOP
#if CBLK_SZ == 0 /* Software Breakpoints */
MOV AR0,@R0 ; Load Start Address of Break Table
CJNE R0,#0xFF,CheckBreaks
#else /* Hardware Breakpoints */
JBC EA,ChkEA
ANL A,#0FBH
ChkEA:
#ifdef TI_MSC1210 // added for TI MSC121x
EAI BIT 0DDH ; Enable bit for AUX Interrupt
SETB SaveEAI
JBC EAI,ChkEAI
CLR SaveEAI
ChkEAI:
#endif // for TI MSC121x
MOV @R0,A
SET_TI
#endif
; Called when a Breakpoint is reached or in Single Stepping Mode
; Sends Break-Idenfier, R0, ACC, PSW, PCH, PCL, R1
#if CBLK_SZ == 0 /* Software Breakpoints */
SoftBreak: MOV A,#0F7H ; Send Idenifier
#endif
Send7Bytes: SBYTE ; Send Byte
POP AR1
MOV R0,#5
SendStackFrame: POP ACC
ACALL ?ISD?SENDBYTE
DJNZ R0,SendStackFrame
MOV A,R1
?ISD?CMDLOOP2: ACALL ?ISD?SENDBYTE
; Wait for Command
; CmdAddrL, CmdAddrH, R0, ACC
?ISD?CMDLOOP: ACALL ?ISD?GETBYTE ; Command Address
PUSH ACC
ACALL ?ISD?GETBYTE
PUSH ACC
ACALL ?ISD?GETBYTE
MOV R0,A
;;; ACALL ?ISD?GETBYTE
;;; RET
?ISD?GETBYTE: GBYTE
RET
#if CBLK_SZ == 0 /* Software Breakpoints */
; Check Soft Breaks in Memory
CheckBreaks: MOV A,SP
ADD A,#-4
MOV R1,A ; Address to PCH/PCL
SJMP CheckBreak1
CheckBreak: INC R0
DEC R1
MOV A,@R0 ; Compare Low Part
XRL A,@R1
INC R0
INC R1
JNZ CheckBreak1
MOV A,@R0 ; Compare High Part
XRL A,@R1
JZ SoftBreak
CheckBreak1: CJNE R0,#?ISD?RAMTOP-1,CheckBreak
POP AR1
RestartUser: POP AR0
#endif
ReturnI: POP ACC
POP PSW
RETI
?ISD?SENDBYTE: SBYTE
RET
;--------------------------------------------------------------------------
; Command: Restart User Program
; LOW (?ISD?RESTART), HIGH (?ISD?RESTART), R0, PCL, PCH, PSW, R1, ACC
;
;
?ISD?RESTART: PUSH ACC ; PCL Content of User Program
ACALL ?ISD?GETBYTE
PUSH ACC ; PCH Content of User Program
ACALL ?ISD?GETBYTE
PUSH ACC ; PSW Content of User Program
ACALL ?ISD?GETBYTE
MOV R1,A ; R1 Content of User Program
ACALL ?ISD?GETBYTE ; ACC Content of User Program
PUSH ACC
PUSH AR0
MOV R0,#?ISD?RAMTOP
MOV A,@R0
#if CBLK_SZ != 0 /* Flash Breakpoints */
SET_ES
POP AR0
RRC A
JNC StepMode
CLR_TI ; Go Mode
#ifdef TI_MSC1210 // added for TI MSC121x
MOV C,SaveEAI
MOV EAI,C
RRC A
JNC RetMode
POP ACC
POP PSW
SETB EA
RETI
StepMode: RRC A
JNC StepModeRet
POP ACC
MOV C,SaveEAI
MOV EAI,C
POP PSW
SETB EA
RETI
StepModeRet: POP ACC
MOV C,SaveEAI
MOV EAI,C
POP PSW
SETB EA
RET
#else
StepMode: RRC A
JNC RetMode
POP ACC
POP PSW
SETB EA
RETI
#endif // end for TI MSC121x
RetMode: RRC A
POP ACC
JNC EAClr
POP PSW
SETB EA
RET
EAClr: POP PSW
RET
#else
JNZ RestartSS
CLR_TI
RestartSS: AJMP RestartUser
#endif
;--------------------------------------------------------------------------;
; Insert HW Breakpoints
#if CBLK_SZ != 0 /* Hareware Breakpoints */
; Command: Write IData Memory Bytes
; LOW (?ISD?WR_IMEMN), HIGH (?ISD?WR_IMEMN), Adr, Cnt, ContBytes [...]
PUBLIC ?ISD?WR_IMEMN
?ISD?WR_IMEMN: MOV R1,A
IMEM2LOOP: ACALL ?ISD?GETBYTE
MOV @R0,A
INC R0
DJNZ R1,IMEM2LOOP
AJMP ?ISD?CMDLOOP
;--------------------------------------------------------------------------
; Command: Write Code Flash
; LOW (?ISD?WR_FLASH), HIGH (?ISD?WR_FLASH), FlashAdrL, FlashAdrH
PUBLIC ?ISD?WR_FLASH
?ISD?WR_FLASH: CWRITE
AJMP ?ISD?CMDLOOP2
#endif
;--------------------------------------------------------------------------
; Command: Write SFR DPL, DPH
; LOW (?ISD?WRITESFR00), HIGH (?ISD?WRITESFR00), DPL, DPH
;
;
?ISD?WRITESFR00:
MOV DPL,R0
MOV DPH,A
AJMP ?ISD?CMDLOOP
;--------------------------------------------------------------------------
; Command: Write SFR SP, B
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