F68HC11 V3.5 MEMORY MAP

DECHEXNAMEVALUE/DESCRIPTION
0$0000W0: Word Pointer
1$0001 "
2 $0002 IP0: Instruction Pointer
3 $0003  "
4 $0004 UP$0006: UAREA
5 $0005  "
6 $0006 DNLINKLinked List of Tasks
7 $0007  "
8 $0008 UPLINKLinked List of Tasks
9 $0009  "
10 $000A PRIORITYPriority Level of Task
11 $000B  "
12 $000C RPSAVEProgram Counter
13 $000D  "Location 6 thru D are reserved for
multitasking.  Whey they are not 
used, they can be used as variable 
locations.
14 $000E R0STACKINIT: Base Address of Return 
Stack
15 $000F  "
16 $0010 S0BOS: 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.
17 $0011  "
18 $0012 KEY-BC-PTRDEFKEY: Address of Control Blocks
that determine how the built-in 
input routines work.
19 $0013  "
20 $0014 EMIT-BC-PTRDEFOUT: Address of Control Blocks 
that determine how the built-in 
output routines work.
21 $0015  "
22 $0016 UKEYKEYSUB+2: Address of Input 
Subroutines
23 $0017  "
24 $0018 UEMITEMITSUB+2: Address of Output 
Subroutines
25 $0019  "
26 $001A U?TERMINALQTSUB+2: Address of ?TERMINAL 
Subroutines
27 $001B  "
28 $001C TIBTIBX: Starting Address of Terminal 
Input Buffer
29 $001D  "
30 $001E UC/L16: Length of TIB
31 $001F  "
32 $0020 CLD/WRM$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.
33 $0021  "

34 $0022 UPADUPADINIT: Base Address of Scratch 
Pad used for output number 
conversion
35 $0023  "
36 $0024 BASE10: Current Number Base
37 $0025  "
38 $0026 C/10MS20000: Cycles per 10 Milliseconds 
delay
39 $0027  "
40 $0028 CR CHARACTER$0D: ASCII value of CR
41 $0029  "
42 $002A BS CHARACTER$08: ASCII value of BS
43 $002B  "
44 $002C DPTOP: Dictionary Pointer
45 $002D  "
46 $002E DP\0: Head Dictionary Pointer
47 $002F  "
48 $0030 EDP$B604: EEPROM Dictionary Usage 
Pointer that is used to when a word 

is moved into EEPROM with EEWORD
49 $0031  "
50 $0032 HEADERLESS0: Flag that controls headerless 
code generation
51 $0033  "
52 $0034 VOC-LINKUAREA+UASMOF+2
53 $0035  "
54 $0036 $81$81: Fake head mode of count 1 with
MSB set to 1 
55 $0037 $A0$A0: Blank(=$20) with MSB set to 1
56 $0038 UFORTHNTOP: Name Field Address of top 
word
57 $0039  "
58 $003A 000000
59 $003B 00
60 $003C $81$81
61 $003D $A0$A0
62 $003E UEDITOREDTOP: Reserved for future use of 
EDITOR
63 $003F  "
64 $0040  "UAREA+U4TH+2
65 $0041  "
66 $0042 $81$81
67 $0043 $A0$A0
68 $0044 UASSEMBLERASMTOP: Reserved for future use of 
ASSEMBLER
69 $0045  "
70 $0046  "UAREA+UEDITOR+2
71 $0047  "
72 $0048 WIDTH31: Maximum length of word
73 $0049  "
74 $004A FENCENTOP: Lower limit restricting 
FORGET
75 $004B  "
76 $004C UABORTABORT: Error handling vector
77 $004D  "
78 $004E UFIRST$C7FC: The address of first block 
buffer

79 $004F  "

80 $0050 ULIMIT$D000: End of block buffer
81 $0051  "
82 $0052 OFFSET0: The offset added to the block 
number on the stack by BLOCK or 
BUFFER to determine the actual 
physical block number
83 $0053  "
84 $0054 WARNING0: Shows how error is handled.
85 $0055  "
86 $0056 UR/WRAM DISK: Default location
87 $0057  "
88 $0058 >IN# of bytes from the beginning of 
the input stream at any particular 
moment during interpretation
89 $0059  "
90 $005A SPANThe count of characters received 
and stored by the most recent 
execution of EXPECT
91 $005B  "
92 $005C #TIBThe number of characters input
#TIB is accessed by WORD when BLK 
is 0
93 $005D  "
94 $005E DPLThe number of places after the
 fractional point for input 
conversion
95 $005F  "
96 $0060 FLDThe value of the field length 
reserved for a number during output 

conversion
97 $0061  "
98 $0062 USEThe address of block buffer 
currently using
99 $0063  "
100 $0064 PREVThe address of block buffer 
previously used
101 $0065  "
102 $0066 BLKThe number of block that is 
currently being interpreted
103 $0067  "
104 $0068 SCRThe number of block most recently
listed
105 $0069  "
106 $006A CONTEXTThe vocabulary to be searched first 

in the dictionary
107 $006B  "
108 $006C CURRENTThe vocabulary into which new word
definitions will be entered
109$006D  "
110 $006E STATEThe value defining the compilation 
state
111 $006F  "
112 $0070 CSPTemporary location for the Check 
Stack Pointer(CSP) position for 
compilation error checking
113 $0071  "

114 $0072 CYLINDERBase Address of the Ram Disk
115 $0073  "

116 $0074FSPFloating-point Stack Pointer
117 $0075  "
118 $0076 FSP0(DISKNO)158: Base Address of Floating-point 

Stack  
119 $0077  "
120 $0078 PLACES(B/SIDE)Number of digits to the right of
the radix point displayed by E. or
F.
121 $0079  "     TOSEND USER VARIABLES
122  $007A(digits)
123$007B(digits)
124  $007C     (digits)
125  $007D     (digits)
126  $007E     (digits)
127  $007F     (digits)
128  $0080     (digits)
129 $0081     (digits)
130 $0082     (digits)
131 $0083 (digits)
132 $0084  (digits)
133 $0085  (digits)
134 $0086  (digits)
135 $0087  (digits)PAD DOWN FOR 14 CHAR
136 $0088  (characters)TIBX UPADINIT
137 $0089  (characters)
138 $008A(characters)
139 $008B(characters)
140 $008C(characters)
141 $008D(etc.)
142 $008E 
143 $008F 
144 $0090 
145 $0091 
146 $0092 
147 $0093 
148 $0094 
149 $0095 
150 $0096 
151 $0097 
152 $0098 
153 $0099 
154 $009A 
155 $009B 
156 $009C 
157 $009D 
158 $009E 
159 $009F 
160 $00A0 
161 $00A1 
162 $00A2 
163 $00A3 
164 $00A4 
165 $00A5 
166 $00A6 
167 $00A7 
168 $00A8
169 $00A9

170 $00AA

171 $00AB(characters)TIB continues
172 $00AC
173 $00AD
174 $00AE
175 $00AF
176 $00B0
177 $00B1
178 $00B2
179 $00B3
180 $00B4
181 $00B5 
182 $00B6
183 $00B7 
184 $00B8
185 $00B9 
186 $00BA
187 $00BB 
188 $00BC
189$00BD 
190$00BE 
191$00BF 
192$00C0
193$00C1 
194$00C2
195$00C3 
196$00C4
197$00C5 
198$00C6
199$00C7 
200$00C8 
201$00C9 
202$00CA          
203$00CB 
204$00CC
205$00CD
206 $00CE 
207 $00CF 
208 $00D0        
209 $00D1
211 $00D3
212 $00D4
213 $00D5
214 $00D6
215 $00D7TIB ends
216 $00D8RETURN STACK 20
217 $00D9  "
218 $00DARETURN STACK 19
219 $00DB  "
220 $00DCRETURN STACK 18
221 $00DD  "
222 $00DERETURN STACK 17
223 $00DF  "
224 $00E0RETURN STACK 16 
225 $00E1  "
226 $00E2RETURN STACK 15 
227 $00E3  "
228 $00E4 RETURN STACK 14 
229 $00E5  "


230 $00E6 RETURN STACK 13 
231 $00E7  " 
232 $00E8 RETURN STACK 12 
233 $00E9  " 
234 $00EA RETURN STACK 11 
235 $00EB  " 
236 $00EC RETURN STACK 10 
237 $00ED  " 
238 $00EE RETURN STACK 9 
239 $00EF  " 
240 $00F0 RETURN STACK 8 
241 $00F1  " 
242 $00F2 RETURN STACK 7 
243 $00F3  " 
244 $00F4 RETURN STACK 6 
245 $00F5  " 
246 $00F6 RETURN STACK 5 
247 $00F7  " 
248 $00F8 RETURN STACK 4 
249 $00F9  " 
250 $00FA RETURN STACK 3 
251 $00FB  " 
252 $00FC RETURN STACK 2 
253 $00FD  " 
254 $00FE RETURN STACK 1
255 $00FF  "            R0 PUT IN S 
256 $0100 DATA STACK 20
257 $0101"
258 $0102 DATA STACK 19
259 $0103  "
260 $0104 DATA STACK 18
261 $0105  "
262 $0106 DATA STACK 17
263 $0107  "
264 $0108 DATA STACK 16
265 $0109  "
266 $010A DATA STACK 15
267 $010B  "
268 $010C DATA STACK 14
269 $010D  " 
270 $010E DATA STACK 13
271 $010F  " 
272 $0110 DATA STACK 12
273 $0111  " 
274 $0112 DATA STACK 11
275 $0113  " 
276 $0114 DATA STACK 10
277$0115  " 
278$0116 DATA STACK 9
279$0117  " 
280  $0118 DATA STACK 8
281$0119  " 
282$011A DATA STACK 7
283$011B  " 
284$011C DATA STACK 6
285$011D  " 
286$011E DATA STACK 5
287$011F  "


288$0120DATA STACK 4
289$0121"
290$0122DATA STACK 3
291$0123"
292$0124DATA STACK 2
293$0125"
294$0126DATA STACK 1
295$0127"
296$0128F.P.STACK 8S0 IN Y
297$0129"
298$012A
299$012B
300$012C
301$012D
302$012EF.P.STACK 7
303$012F
304$0130
305$0131
306$0132
307$0133
308$0134F.P.STACK 6
309$0135
310$0136
311$0137
312$0138
313$0139
314$013AF.P.STACK 5
315$013B
316$013C
317$013D
318$013E
319$013F
320$0140F.P.STACK 4
321$0141
322$0142
323$0143
324$0144
325$0145
326$0146F. P. STACK 3
327$0147
328$0148
329$0149
330$014A
331$014B
332$014CF. P. STACK 2
333$014D
334$014E
335$014F
336$0150
337$0151
338$0152F. P. STACK 1
339$0153
340$0154
341$0155
342$0156
343$0157
344$0158NTOP$84
345$0159'T'


346$015A'A'
347$015B'S'
348$015C'K+80'
349$015DLINK
350$015E   "
351$015FPFAPTR
352$0160   "
353$0161(dictionary)TOP
354$0162  "
355$0163  "
356$0164  "

511$01FFEND OF INTERNAL RAM

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

$B000PORTAPort A Data Register
$B001Reserved etc.
$B002PIOCParallel I/O Control Register
$B003PORTCPort C Data Register
$B004PORTBPort B Data Register
$B005PORTCLPort C Latched Data Register
$B006Reserved
$B007DDRCData Direction Register for Port C
$B008PORTDPort D Data Register
$B009DDRDData Direction Register for Port D
$B00APORTEPort E Data Register
$B00BCFORCTimer Compare Force Register
$B00COC1MOutput Compare 1 Mask Register
$B00DOC1DOutput Compare 1 Data Register
$B00ETCNTTimer Counter Register
$B00F"
$B010TIC1Timer Input Capture Register 1
$B011"
$B012TIC2Timer Input Capture Register 2
$B013"
$B014TIC3Timer Input Capture Register 3
$B015"
$B016TOC1Timer Output Compare Register 1
$B017"
$B018TOC2Timer Output Compare Register 2
$B019"
$B01ATOC3Timer Output Compare Register 3
$B01B"
$B01CTOC4Timer Output Compare Register 4
$B01D"
$B01ETI4O5Timer Input Capture 4 or
Output Compare 5 Register
$B01F"
$B020TCTL1Timer Control Register 1
$B021TCTL2Timer Control Register 2
$B022TMSK1Main Timer Interrupt Mask Reg.1
$B023TFLG1Main Timer Interrupt Flag Reg.1
$B024TMSK2Misc. Timer Interrupt Mask Reg.2
$B025TFLG2Misc. Timer Interrupt Flag Reg.2
$B026PACTLPulse Accumulator Control Register
$B027PACNTPulse Accumulator Count Register
$B028SPCRSPI Control Register


$B029SPSRSPI Status Register
$B02ASPDRSPI Data Register
$B02BBAUDSCI Baud Rate Control Register
$30 BY RESET
$B02CSCCR1SCI Control Register
$00 BY RESET
$B02DSCCR2SCI Control Register 2
$0C BY RESET
$B02ESCSRSCI Status Register
$B02FSCDRSCI Data Register
$B030ADCTLA/D Control/Status Register
$B031ADR1A/D Result Register 1
$B032ADR2A/D Result Register 2
$B033ADR3A/D Result Register 3
$B034ADR4A/D Result Register 4
$B035BPROTBlock Protect Register
$B036Reserved
$B037Reserved
$B038Reserved
$B039OPTIONSystem Configuration Options
$B03ACOPRSTArm/Reset COP Timer Circuitry
$B03BPPROGEEPROM Programming Register
$B03CHPRIOHighest Priority Interrupt & Misc.
$B03DINITRAM and I/O Mapping register
$0B BY RESET
$B03ETEST1Factory Test Register
$B03FCONFIGConfiguration Control register

$B600EEPROM 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
$B7FFEEPROM REG INITIALIZATION FOR 64 CLK CYC REG 


$D000FLOATING POINT ROM
"ADDTIONAL HEADS
$E000ROM AND HEADS
"
"
"
"
"
$XXXXNON RUN TIME CODES
"
"
"


"
"
$XXXXRUN TIME CODES
"
"
"
"
"
$XXX0DEFKEY SCSR IN ROM ADDRESS OF STATUS REG.
$XXX1
$XXX2DEFKEY+2 $20 IN ROM AND MASK
$XXX3DEFKEY+3 0 IN ROM XOR MASK
$XXX4DEFKEY+4 SCDR IN ROM ADDRESS OF INPUT REG.
$XXX5
$XXX6DEFOUT SCSR IN ROM ADDRESS OF STATUS REG
$XXX7
$XXX8DEFOUT+2 $80 IN ROM AND MASK
$XXX9DEFOUT+3 0 IN ROM XOR MASK
$XXXADEFOUT+4 SCDR IN ROM ADDRESS OF OUTPUT REGISTER
$XXXB
"
$FFC0RESERVED
$FFC1"
$FFC2RESERVED
$FFC3"
$FFC4RESERVED
$FFC5"
$FFC6RESERVED
$FFC7"
$FFC8RESERVED
$FFC9"
$FFCARESERVED
$FFCB"
$FFCCRESERVED
$FFCD"
$FFCERESERVED
$FFCF"
$FFD0RESERVED
$FFD1"
$FFD2RESERVED
$FFD3"
$FFD4RESERVED
$FFD5"
$FFD6SCI SER SYS $B7BF IN ROM
$FFD7"
$FFD8SPI SERIAL $B7C2 IN ROM
$FFD9"
$FFDAPLS ACC OVRFL $B7C5 IN ROM
$FFDB"
$FFDCPLS ACC EDGE $B7C8 IN ROM
$FFDD"
$FFDETMR OVERFLOW $B7CB IN ROM
$FFDF"
$FFE0TMR OUT CAP 5 $B7CE IN ROM
$FFE1"
$FFE2TMR OUT CAP 4 $B7D1 IN ROM
$FFE3"
$FFE4TMR OUT CAP 3 $B7D4 IN ROM 


$FFE5"
$FFE6TMR OUT CAP 2 $B7D7 IN ROM
$FFE7"
$FFE8TMR OUT CAP 1 $B7DA IN ROM
$FFE9"
$FFEATMR IN CAP 3 $B7DD IN ROM
$FFEB"
$FFECTMR IN CAP 2 $B7E0 IN ROM
$FFED"
$FFEETMR IN CAP 1 $B7E3 IN ROM
$FFEF"
$FFF0REAL TIME $B7E6 IN ROM
$FFF1"
$FFF2IRQ $B7E9 IN ROM
$FFF3"
$FFF4XIRQ $B7EC IN ROM
$FFF5"
$FFF6SWI $B7EF IN ROM
$FFF7"
$FFF8OP-CODE TRAP $B7F2 IN ROM
$FFF9"
$FFFACOP FAILURE $B7F5 IN ROM
$FFFB"
$FFFCCOP Clk Mon $B7F8 IN ROM
$FFFD"
$FFFERESET COLD+2 IN ROM
$FFFF"