?? isd51.a51
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$NOMOD51
;------------------------------------------------------------------------------
; ISD51 In-System Debugger for 8051 based microcontrollers
; Copyright KEIL ELEKTRONIK GmbH and Keil Software, Inc. 2000 - 2002
; Version 1.00 Beta 0
;------------------------------------------------------------------------------
; 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.
;
;------------------------------------------------------------------------------
#include "ISD51.H" /* ISD51 Configuration Parameters */
;------------------------------------------------------------------------------
;----------------- !!! Do not modify code sections below !!! ------------------
;------------------------------------------------------------------------------
NAME ISD51_CONFIGURATION
;
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;
?ISD?RAMTOP EQU RAMSIZE-1
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
PUBLIC ?ISD?VERSION
PUBLIC __isd_init
?ISD?VERSION EQU 100 ; Version 1.00
?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
PUSH PSW
PUSH ACC
MOV A,BPCTRL
JNB ACC.7,NoHWBreakPoint
LJMP HwBreakPoint
; this code is at C:0x003F
NoHWBreakPoint: POP ACC
POP PSW
; here we are at C:0x0043 ; PFI Interrupt Vector must be changed to 8!
RSEG ?PR?ISD51
USING 0 ; Assume Registerbank 0 for ARx symbols
; Entry Point for HW Breakpoint
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
SerialInterrupt:
PUSH PSW
PUSH ACC
MOV PSW,#0 ; Select Register Bank 0
PUSH AR0
PUSH AR1
JB_RI BreakSerial
MOV R0,#?ISD?RAMTOP
MOV AR0,@R0 ; Load Start Address of Break Table
CJNE R0,#0xFF,CheckBreaks
; Called when a Breakpoint is reached or in Single Stepping Mode
; Sends Break-Idenfier, R0, ACC, PSW, PCH, PCL, R1
SoftBreak: MOV A,#0F7H ; Send Idenifier
Send7Bytes: SBYTE ; Send Byte
POP AR1
MOV R0,#5
SendStackFrame: POP ACC
ACALL ?ISD?SENDBYTE
DJNZ R0,SendStackFrame
MOV A,R1
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
; 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
ReturnI: POP AR1
RestartUser: POP AR0
POP ACC
POP PSW
RETI
BreakSerial: RBYTE
CJNE A,#0A5H,ReturnI
SET_TI
SJMP SoftBreak
?ISD?SENDBYTE: SBYTE
RET
;--------------------------------------------------------------------------
; 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
; LOW (?ISD?WRITESFR01), HIGH (?ISD?WRITESFR01), SP, B
;
?ISD?WRITESFR01:
MOV SP,R0
MOV B,A
AJMP ?ISD?CMDLOOP
;--------------------------------------------------------------------------
; Command: Write SFR02: P0
; LOW (?ISD?WRITESFR02), HIGH (?ISD?WRITESFR02), dummy, P0
;
?ISD?WRITESFR02:
MOV P0,A
AJMP ?ISD?CMDLOOP
;--------------------------------------------------------------------------
; Command: Write SFR03: P3
; LOW (?ISD?WRITESFR03), HIGH (?ISD?WRITESFR03), dummy, P3
;
?ISD?WRITESFR03:
MOV P3,A
AJMP ?ISD?CMDLOOP
;--------------------------------------------------------------------------
; 0 Read CPU Core SFR registers:
; LOW (?ISD?READCORESFR), HIGH (?ISD?READCORESFR), dummy, dummy
; Sends: dummy, dummy, B, AUXR, DPL, DPH, SP
?ISD?READSFR00: MOV A,SP
PUSH DPH
PUSH DPL
PUSH AUXR
PUSH B
PUSH ACC ; Dummy
PUSH ACC ; Dummy
AJMP Send7Bytes
;
;--------------------------------------------------------------------------
; 1 Read CPU Core SFR registers:
; LOW (?ISD?READSFR01), HIGH (?ISD?READSFR01), dummy, dummy
; Sends: S:80, S:84, S:85, S:86, S:87, S:88, S:89
;
?ISD?READSFR01:
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