                        F68HC11 V3.5 MEMORY MAP

HEX     NAME            VALUE/DESCRIPTION
~~~     ~~~~            ~~~~~~~~~~~~~~~~~
$0000   W               0: Word Pointer
$0001   "
$0002   I               P0: Instruction Pointer
$0003   "
$0004   UP              $0006: UAREA
$0005   "
$0006   DNLINK          Linked List of Tasks
$0007   "
$0008   UPLINK          Linked List of Tasks
$0009   "
$000A   PRIORITY        Priority Level of Task
$000B   "
$000C   RPSAVE          Program Counter
$000D   "               Location 6 thru D are reserved for multitasking.  
                        WheN they are not used, they can be used as variable 
                        locations.
$000E   R0              STACKINIT: Base Address of Return Stack
$000F   "
$0010   S0              BOS: Base Address of Data Stack R0 and S0 can be 
                        modified to point into external RAM if larger stack areas 
                        are desired. They will not be put into effect until ABORT 
                        is executed.
$0011   "
$0012   KEY-BC-PTR      DEFKEY: Address of Control Blocks that determine how 
                        the built-in input routines work.
$0013   "
$0014   EMIT-BC-PTR     DEFOUT: Address of Control Blocks that determine how 
                        the built-in output routines work.
$0015   "
$0016   UKEY            KEYSUB+2: Address of Input Subroutines
$0017   "
$0018   UEMIT           EMITSUB+2: Address of Output Subroutines
$0019   "
$001A   U?TERMINAL      QTSUB+2: Address of ?TERMINAL Subroutines
$001B   "
$001C   TIB             TIBX: Starting Address of Terminal Input Buffer
$001D   "
$001E   UC/L            16: Length of TIB
$001F   "
$0020   CLD/WRM         $A55A: As long as this contains a $A55A pattern and 
                        there is no <CTRL-G> in the serial channel, the 
                        system will not do a cold download of system variables 
                        at every reset.
$0021   "
$0022   UPAD            UPADINIT: Base Address of Scratch Pad used for output 
                        number conversion
$0023   "
$0024   BASE            10: Current Number Base
$0025   "
$0026   C/10MS          20000: Cycles per 10 Milliseconds delay
$0027   "
$0028   CR CHARACTER    $0D: ASCII value of CR
$0029   "
$002A   BS CHARACTER    $08: ASCII value of BS
$002B   "
$002C   DP              TOP: Dictionary Pointer
$002D   "
$002E   DP\             0: Head Dictionary Pointer
$002F   "
$0030   EDP             $B604: EEPROM Dictionary Usage Pointer that is used to 
                        when a word is moved into EEPROM with EEWORD
$0031   "
$0032   HEADERLESS      0: Flag that controls headerless code generation
$0033   "
$0034   VOC-LINK        UAREA+UASMOF+2
$0035   "
$0036   $81             $81: Fake head mode of count 1 with MSB set to 1 
$0037   $A0             $A0: Blank(=$20) with MSB set to 1
$0038   UFORTH          NTOP: Name Field Address of top  word
$0039   "
$003A   00              0000
$003B   00
$003C   $81             $81
$003D   $A0             $A0
$003E   UEDITOR         EDTOP: Reserved for future use of EDITOR
$003F   "
$0040   UAREA+U4TH+2
$0041   "
$0042   $81             $81
$0043   $A0             $A0
$0044   UASSEMBLER      ASMTOP: Reserved for future use of ASSEMBLER
$0045   "
$0046   "               UAREA+UEDITOR+2
$0047   "
$0048   WIDTH           31: Maximum length of word
$0049   "
$004A   FENCE           NTOP: Lower limit restricting FORGET
$004B   "
$004C   UABORT          ABORT: Error handling vector
$004D   "
$004E   UFIRST          $C7FC: The address of first block buffer
$004F   "
$0050   ULIMIT          $D000: End of block buffer
$0051   "
$0052   OFFSET          0: The offset added to the block number on the stack 
                        by BLOCK or BUFFER to determine the actual physical 
                        block number
$0053   "
$0054   WARNING         0: Shows how error is handled.
$0055   "
$0056   UR/W            RAM DISK: Default location
$0057   "
$0058   >IN             # of bytes from the beginning of the input stream at 
                        any particular moment during interpretation
$0059   "
$005A   SPAN            The count of characters received and stored by the 
                        most recent execution of EXPECT
$005B   "
$005C   #TIB            The number of characters input #TIB is accessed by 
                        WORD when BLK is 0
$005D   "
$005E   DPL             The number of places after the fractional point for 
                        input conversion
$005F   "
$0060   FLD             The value of the field length reserved for a number 
                        during output conversion
$0061   "
$0062   USE             The address of block buffer currently using
$0063   "
$0064   PREV            The address of block buffer previously used
$0065   "
$0066   BLK             The number of block that is currently being 
                        interpreted
$0067   "
$0068   SCR             The number of block most recently listed
$0069   "
$006A   CONTEXT         The vocabulary to be searched first in the dictionary
$006B   "
$006C   CURRENT         The vocabulary into which new word definitions will be 
                        entered
$006D   "
$006E   STATE           The value defining the compilation state
$006F   "
$0070   CSP             Temporary location for the Check Stack Pointer(CSP) 
                        position for compilation error checking
$0071   "
$0072   CYLINDER        Base Address of the Ram Disk
$0073   "
$0074   FSP             Floating-point Stack Pointer
$0075   "
$0076   FSP0            (DISKNO)158: Base Address of Floating-point Stack  
$0077   "
$0078   PLACES          (B/SIDE) Number of digits to the right of the radix 
                        point displayed by E. or F.
$0079   TOS             END USER VARIABLES
$007A   (digits)
$007B   (digits)
$007C   (digits)
$007D   (digits)
$007E   (digits)
$007F   (digits)
$0080   (digits)
$0081   (digits)
$0082   (digits)
$0083   (digits)
$0084   (digits)
$0085   (digits)
$0086   (digits)
$0087   (digits)                PAD DOWN FOR 14 CHAR
$0088   (characters)            TIBX UPADINIT
$0089   (characters)
$008A   (characters)
$008B   (characters)
$008C   (characters)
$008D   (etc.)
$008E 
$008F 
$0090 
$0091 
$0092 
$0093 
$0094 
$0095 
$0096 
$0097 
$0098 
$0099 
$009A 
$009B 
$009C 
$009D 
$009E 
$009F 
$00A0 
$00A1 
$00A2 
$00A3 
$00A4 
$00A5 
$00A6 
$00A7 
$00A8
$00A9
$00AA
$00AB   (characters)            TIB continues
$00AC
$00AD
$00AE
$00AF
$00B0
$00B1
$00B2
$00B3
$00B4
$00B5 
$00B6
$00B7 
$00B8
$00B9 
$00BA
$00BB 
$00BC
$00BD 
$00BE 
$00BF 
$00C0
$00C1 
$00C2
$00C3 
$00C4
$00C5 
$00C6
$00C7 
$00C8 
$00C9 
$00CA          
$00CB 
$00CC
$00CD
$00CE 
$00CF 
$00D0        
$00D1
$00D3
$00D4
$00D5
$00D6
$00D7   TIB ends
$00D8   RETURN STACK 20
$00D9   "
$00DA   RETURN STACK 19
$00DB   "
$00DC   RETURN STACK 18
$00DD   "
$00DE   RETURN STACK 17
$00DF   "
$00E0   RETURN STACK 16 
$00E1   "
$00E2   RETURN STACK 15 
$00E3   "
$00E4   RETURN STACK 14 
$00E5   "
$00E6   RETURN STACK 13 
$00E7   " 
$00E8   RETURN STACK 12 
$00E9   " 
$00EA   RETURN STACK 11 
$00EB   " 
$00EC   RETURN STACK 10 
$00ED   " 
$00EE   RETURN STACK 9 
$00EF   " 
$00F0   RETURN STACK 8 
$00F1   " 
$00F2   RETURN STACK 7 
$00F3   " 
$00F4   RETURN STACK 6 
$00F5   " 
$00F6   RETURN STACK 5 
$00F7   " 
$00F8   RETURN STACK 4 
$00F9   " 
$00FA   RETURN STACK 3 
$00FB   " 
$00FC   RETURN STACK 2 
$00FD   " 
$00FE   RETURN STACK 1
$00FF   R0 PUT IN S 
$0100   DATA STACK 20
$0101   "
$0102   DATA STACK 19
$0103   "
$0104   DATA STACK 18
$0105   "
$0106   DATA STACK 17
$0107   "
$0108   DATA STACK 16
$0109   "
$010A   DATA STACK 15
$010B   "
$010C   DATA STACK 14
$010D   " 
$010E   DATA STACK 13
$010F   " 
$0110   DATA STACK 12
$0111   " 
$0112   DATA STACK 11
$0113   " 
$0114   DATA STACK 10
$0115   " 
$0116   DATA STACK 9
$0117   " 
$0118   DATA STACK 8
$0119   " 
$011A   DATA STACK 7
$011B   " 
$011C   DATA STACK 6
$011D   " 
$011E   DATA STACK 5
$011F    "
$0120   DATA STACK 4
$0121   "
$0122   DATA STACK 3
$0123   "
$0124   DATA STACK 2
$0125   "
$0126   DATA STACK 1
$0127   "
$0128   F.P.STACK 8S0 IN Y
$0129   "
$012A
$012B
$012C
$012D
$012E   F.P.STACK 7
$012F
$0130
$0131
$0132
$0133
$0134   F.P.STACK 6
$0135
$0136
$0137
$0138
$0139
$013A   F.P.STACK 5
$013B
$013C
$013D
$013E
$013F
$0140   F.P.STACK 4
$0141
$0142
$0143
$0144
$0145
$0146   F. P. STACK 3
$0147
$0148
$0149
$014A
$014B
$014C   F. P. STACK 2
$014D
$014E
$014F
$0150
$0151
$0152   F. P. STACK 1
$0153
$0154
$0155
$0156
$0157
$0158   NTOP            $84
$0159   'T'
$015A   'A'
$015B   'S'
$015C   'K+80'
$015D   LINK
$015E   "
$015F   PFAPTR
$0160   "
$0161   (dictionary)TOP
$0162   "
$0163   "
$0164   "
$01FF   END OF INTERNAL RAM

$103D   INIT REG $0B REV 2-3 ($09 REV 0-1) BY RESET

$B000   PORTA           Port A Data Register
$B001   Reserved etc.
$B002   PIOC            Parallel I/O Control Register
$B003   PORTC           Port C Data Register
$B004   PORTB           Port B Data Register
$B005   PORTCL          Port C Latched Data Register
$B006   Reserved
$B007   DDRC            Data Direction Register for Port C
$B008   PORTD           Port D Data Register
$B009   DDRD            Data Direction Register for Port D
$B00A   PORTE           Port E Data Register
$B00B   CFORC           Timer Compare Force Register
$B00C   OC1M            Output Compare 1 Mask Register
$B00D   OC1D            Output Compare 1 Data Register
$B00E   TCNT            Timer Counter Register
$B00F   "
$B010   TIC1            Timer Input Capture Register 1
$B011   "
$B012   TIC2            Timer Input Capture Register 2
$B013   "
$B014   TIC3            Timer Input Capture Register 3
$B015   "
$B016   TOC1            Timer Output Compare Register 1
$B017   "
$B018   TOC2            Timer Output Compare Register 2
$B019   "
$B01A   TOC3            Timer Output Compare Register 3
$B01B   "
$B01C   TOC4            Timer Output Compare Register 4
$B01D   "
$B01E   TI4O5           Timer Input Capture 4 or Output Compare 5 Register
$B01F   "
$B020   TCTL1           Timer Control Register 1
$B021   TCTL2           Timer Control Register 2
$B022   TMSK1           Main Timer Interrupt Mask Reg.1
$B023   TFLG1           Main Timer Interrupt Flag Reg.1
$B024   TMSK2           Misc. Timer Interrupt Mask Reg.2
$B025   TFLG2           Misc. Timer Interrupt Flag Reg.2
$B026   PACTL           Pulse Accumulator Control Register
$B027   PACNT           Pulse Accumulator Count Register
$B028   SPCR            SPI Control Register
$B029   SPSR            SPI Status Register
$B02A   SPDR            SPI Data Register
$B02B   BAUD            SCI Baud Rate Control Register
$30     BY RESET
$B02C   SCCR1           SCI Control Register
$00     BY RESET
$B02D   SCCR2           SCI Control Register 2
$0C     BY RESET
$B02E   SCSR            SCI Status Register
$B02F   SCDR            SCI Data Register
$B030   ADCTL           A/D Control/Status Register
$B031   ADR1            A/D Result Register 1
$B032   ADR2            A/D Result Register 2
$B033   ADR3            A/D Result Register 3
$B034   ADR4            A/D Result Register 4
$B035   BPROT           Block Protect Register
$B036   Reserved
$B037   Reserved
$B038   Reserved
$B039   OPTION          System Configuration Options
$B03A   COPRST          Arm/Reset COP Timer Circuitry
$B03B   PPROG           EEPROM Programming Register
$B03C   HPRIO           Highest Priority Interrupt & Misc.
$B03D   INITRAM and I/O Mapping register
$0B     BY RESET
$B03E   TEST1           Factory Test Register
$B03F   CONFIG          Configuration Control register
"
"
$B600   EEPROM AUTOSTART LOC HI-LEVEL IN EEPROM
$B601   " "
$B602   " CFA OF WORD FOR HI-LEVEL AUTOSTART
$B603   " "
"
"
"       unassigned
"
"
$B7BF  SCI SER SYS INT VEC AT   $FFD6 POINTS HERE
"
"
$B7C2  SPI SERIAL               $FFD8
"
"
$B7C5  PLS ACC OVRFL            $FFDA
"
"
$B7C8  PLS ACC EDGE             $FFDC
"
"
$B7CB  TMR OVERFLOW             $FFDE
"
"
$B7CE  TMR OUT CAP 5            $FFE0
"
"
$B7D1  TMR OUT CAP 4            $FFE2
"     
"
$B7D4  TMR OUT CAP 3            $FFE4
"
"
$B7D7  TMR OUT CAP 2            $FFE6
"
"
$B7DA  TMR OUT CAP 1            $FFE8
"
"
$B7DD  TMR IN CAP 3             $FFEA
"
"
$B7E0  TMR IN CAP 2             $FFEC
"
"
$B7E3  TMR IN CAP 1             $FFEE
"
"
$B7E6  REAL TIME                $FFF0
"
"
$B7E9  IRQ                      $FFF2
"
"
$B7EC  XIRQ                     $FFF4
"
"
$B7EF  SWI                      $FFF6
"
"
$B7F2  OP-CODE TRAP             $FFF8
"
"
$B7F5  COP FAILURE              $FFFA
"
"
$B7F8  COP Clk Mon              $FFFC
"
"
$B7FB  ENTRY POINT FOR RESET SUB
$B7FC  "
$B7FD  "
$B7FE  AUTOSTART LOC FOR RESET SUBROUTINE BEFORE
$B7FF  EEPROM REG INITIALIZATION FOR 64 CLK CYC REG 


$D000   FLOATING POINT ROM 
"       ADDTIONAL HEADS
"
$E000   ROM AND HEADS
"
"
"
"
"
$XXXX   NON RUN TIME CODES
"
"
"
"
"
$XXXX   RUN TIME CODES
"
"
"
"
"
$XXX0   DEFKEY SCSR IN ROM ADDRESS OF STATUS REG.
$XXX1   "
$XXX2   DEFKEY+2 $20 IN ROM AND MASK
$XXX3   DEFKEY+3 0 IN ROM XOR MASK
$XXX4   DEFKEY+4 SCDR IN ROM ADDRESS OF INPUT REG.
$XXX5   "
$XXX6   DEFOUT SCSR IN ROM ADDRESS OF STATUS REG
$XXX7   "
$XXX8   DEFOUT+2 $80 IN ROM AND MASK
$XXX9   DEFOUT+3 0 IN ROM XOR MASK
$XXXA   DEFOUT+4 SCDR IN ROM ADDRESS OF OUTPUT REGISTER
$XXXB   "
$FFC0   RESERVED
$FFC1   "
$FFC2   RESERVED
$FFC3   "
$FFC4   RESERVED
$FFC5   "
$FFC6   RESERVED
$FFC7   "
$FFC8   RESERVED
$FFC9   "
$FFCA   RESERVED
$FFCB   "
$FFCC   RESERVED
$FFCD   "
$FFCE   RESERVED
$FFCF   "
$FFD0   RESERVED
$FFD1   "
$FFD2   RESERVED
$FFD3   "
$FFD4   RESERVED
$FFD5   "
$FFD6   SCI SER SYS $B7BF IN ROM
$FFD7   "
$FFD8   SPI SERIAL $B7C2 IN ROM
$FFD9   "
$FFDA   PLS ACC OVRFL $B7C5 IN ROM
$FFDB   "
$FFDC   PLS ACC EDGE $B7C8 IN ROM
$FFDD   "
$FFDE   TMR OVERFLOW $B7CB IN ROM
$FFDF   "
$FFE0   TMR OUT CAP 5 $B7CE IN ROM
$FFE1   "
$FFE2   TMR OUT CAP 4 $B7D1 IN ROM
$FFE3   "
$FFE4   TMR OUT CAP 3 $B7D4 IN ROM 
$FFE5   "
$FFE6   TMR OUT CAP 2 $B7D7 IN ROM
$FFE7   "
$FFE8   TMR OUT CAP 1 $B7DA IN ROM
$FFE9   "
$FFEA   TMR IN CAP 3 $B7DD IN ROM
$FFEB   "
$FFEC   TMR IN CAP 2 $B7E0 IN ROM
$FFED   "
$FFEE   TMR IN CAP 1 $B7E3 IN ROM
$FFEF   "
$FFF0   REAL TIME $B7E6 IN ROM
$FFF1   " 
$FFF2   IRQ $B7E9 IN ROM
$FFF3   "
$FFF4   XIRQ $B7EC IN ROM
$FFF5   "
$FFF6   SWI $B7EF IN ROM
$FFF7   "
$FFF8   OP-CODE TRAP $B7F2 IN ROM
$FFF9   "
$FFFA   COP FAILURE $B7F5 IN ROM
$FFFB   "
$FFFC   COP Clk Mon $B7F8 IN ROM
$FFFD   "
$FFFE   RESET COLD+2 IN ROM
$FFFF   "

************************** end of memory map ********************************
