1 | (* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *) |
---|
2 | (* Interpret.ma: Operational semantics for the 8051/8052 processor. *) |
---|
3 | (* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *) |
---|
4 | |
---|
5 | include "ASM.ma". |
---|
6 | include "Arithmetic.ma". |
---|
7 | include "BitVectorTrie.ma". |
---|
8 | |
---|
9 | ndefinition Time ≝ Nat. |
---|
10 | |
---|
11 | ninductive SerialBufferType: Type[0] ≝ |
---|
12 | Eight: Byte → SerialBufferType |
---|
13 | | Nine: Bit → Byte → SerialBufferType. |
---|
14 | |
---|
15 | ninductive LineType: Type[0] ≝ |
---|
16 | P1: Byte → LineType |
---|
17 | | P3: Byte → LineType |
---|
18 | | SerialBuffer: SerialBufferType → LineType. |
---|
19 | |
---|
20 | (* What is a continuation, now? *) |
---|
21 | |
---|
22 | ninductive SFR8051: Type[0] ≝ |
---|
23 | SFR_SP: SFR8051 |
---|
24 | | SFR_DPL: SFR8051 |
---|
25 | | SFR_DPH: SFR8051 |
---|
26 | | SFR_PCON: SFR8051 |
---|
27 | | SFR_TCON: SFR8051 |
---|
28 | | SFR_TMOD: SFR8051 |
---|
29 | | SFR_TL0: SFR8051 |
---|
30 | | SFR_TL1: SFR8051 |
---|
31 | | SFR_TH0: SFR8051 |
---|
32 | | SFR_TH1: SFR8051 |
---|
33 | | SFR_P1: SFR8051 |
---|
34 | | SFR_SCON: SFR8051 |
---|
35 | | SFR_SBUF: SFR8051 |
---|
36 | | SFR_IE: SFR8051 |
---|
37 | | SFR_P3: SFR8051 |
---|
38 | | SFR_IP: SFR8051 |
---|
39 | | SFR_PSW: SFR8051 |
---|
40 | | SFR_ACC_A: SFR8051 |
---|
41 | | SFR_ACC_B: SFR8051. |
---|
42 | |
---|
43 | ndefinition sfr_8051_index ≝ |
---|
44 | λs: SFR8051. |
---|
45 | match s with |
---|
46 | [ SFR_SP ⇒ Z |
---|
47 | | SFR_DPL ⇒ S Z |
---|
48 | | SFR_DPH ⇒ two |
---|
49 | | SFR_PCON ⇒ three |
---|
50 | | SFR_TCON ⇒ four |
---|
51 | | SFR_TMOD ⇒ five |
---|
52 | | SFR_TL0 ⇒ six |
---|
53 | | SFR_TL1 ⇒ seven |
---|
54 | | SFR_TH0 ⇒ eight |
---|
55 | | SFR_TH1 ⇒ nine |
---|
56 | | SFR_P1 ⇒ ten |
---|
57 | | SFR_SCON ⇒ eleven |
---|
58 | | SFR_SBUF ⇒ twelve |
---|
59 | | SFR_IE ⇒ thirteen |
---|
60 | | SFR_P3 ⇒ fourteen |
---|
61 | | SFR_IP ⇒ fifteen |
---|
62 | | SFR_PSW ⇒ sixteen |
---|
63 | | SFR_ACC_A ⇒ seventeen |
---|
64 | | SFR_ACC_B ⇒ eighteen |
---|
65 | ]. |
---|
66 | |
---|
67 | ninductive SFR8052: Type[0] ≝ |
---|
68 | SFR_T2CON: SFR8052 |
---|
69 | | SFR_RCAP2L: SFR8052 |
---|
70 | | SFR_RCAP2H: SFR8052 |
---|
71 | | SFR_TL2: SFR8052 |
---|
72 | | SFR_TH2: SFR8052. |
---|
73 | |
---|
74 | ndefinition sfr_8052_index ≝ |
---|
75 | λs: SFR8052. |
---|
76 | match s with |
---|
77 | [ SFR_T2CON ⇒ Z |
---|
78 | | SFR_RCAP2L ⇒ S Z |
---|
79 | | SFR_RCAP2H ⇒ two |
---|
80 | | SFR_TL2 ⇒ three |
---|
81 | | SFR_TH2 ⇒ four |
---|
82 | ]. |
---|
83 | |
---|
84 | (* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *) |
---|
85 | (* Processor status. *) |
---|
86 | (* -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= *) |
---|
87 | nrecord Status: Type[0] ≝ |
---|
88 | { |
---|
89 | code_memory: BitVectorTrie Byte sixteen; |
---|
90 | low_internal_ram: BitVectorTrie Byte seven; |
---|
91 | high_internal_ram: BitVectorTrie Byte seven; |
---|
92 | external_ram: BitVectorTrie Byte sixteen; |
---|
93 | |
---|
94 | program_counter: Word; |
---|
95 | |
---|
96 | special_function_registers_8051: Vector Byte nineteen; |
---|
97 | special_function_registers_8052: Vector Byte five; |
---|
98 | |
---|
99 | p1_latch: Byte; |
---|
100 | p3_latch: Byte |
---|
101 | }. |
---|
102 | |
---|
103 | naxiom sfr8051_index_nineteen: |
---|
104 | ∀i: SFR8051. |
---|
105 | sfr_8051_index i < nineteen. |
---|
106 | |
---|
107 | naxiom sfr8052_index_five: |
---|
108 | ∀i: SFR8052. |
---|
109 | sfr_8052_index i < five. |
---|
110 | |
---|
111 | ndefinition set_p1_latch ≝ |
---|
112 | λs: Status. |
---|
113 | λb: Byte. |
---|
114 | let old_code_memory ≝ code_memory s in |
---|
115 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
116 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
117 | let old_external_ram ≝ external_ram s in |
---|
118 | let old_program_counter ≝ program_counter s in |
---|
119 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
120 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
121 | let old_p3_latch ≝ p3_latch s in |
---|
122 | mk_Status old_code_memory |
---|
123 | old_low_internal_ram |
---|
124 | old_high_internal_ram |
---|
125 | old_external_ram |
---|
126 | old_program_counter |
---|
127 | old_special_function_registers_8051 |
---|
128 | old_special_function_registers_8052 |
---|
129 | b |
---|
130 | old_p3_latch. |
---|
131 | |
---|
132 | ndefinition set_p3_latch ≝ |
---|
133 | λs: Status. |
---|
134 | λb: Byte. |
---|
135 | let old_code_memory ≝ code_memory s in |
---|
136 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
137 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
138 | let old_external_ram ≝ external_ram s in |
---|
139 | let old_program_counter ≝ program_counter s in |
---|
140 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
141 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
142 | let old_p1_latch ≝ p1_latch s in |
---|
143 | mk_Status old_code_memory |
---|
144 | old_low_internal_ram |
---|
145 | old_high_internal_ram |
---|
146 | old_external_ram |
---|
147 | old_program_counter |
---|
148 | old_special_function_registers_8051 |
---|
149 | old_special_function_registers_8052 |
---|
150 | old_p1_latch |
---|
151 | b. |
---|
152 | |
---|
153 | ndefinition get_8051_sfr ≝ |
---|
154 | λs: Status. |
---|
155 | λi: SFR8051. |
---|
156 | let sfr ≝ special_function_registers_8051 s in |
---|
157 | let index ≝ sfr_8051_index i in |
---|
158 | get_index … sfr index ?. |
---|
159 | napply (sfr8051_index_nineteen i). |
---|
160 | nqed. |
---|
161 | |
---|
162 | ndefinition get_8052_sfr ≝ |
---|
163 | λs: Status. |
---|
164 | λi: SFR8052. |
---|
165 | let sfr ≝ special_function_registers_8052 s in |
---|
166 | let index ≝ sfr_8052_index i in |
---|
167 | get_index … sfr index ?. |
---|
168 | napply (sfr8052_index_five i). |
---|
169 | nqed. |
---|
170 | |
---|
171 | ndefinition set_8051_sfr ≝ |
---|
172 | λs: Status. |
---|
173 | λi: SFR8051. |
---|
174 | λb: Byte. |
---|
175 | let index ≝ sfr_8051_index i in |
---|
176 | let old_code_memory ≝ code_memory s in |
---|
177 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
178 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
179 | let old_external_ram ≝ external_ram s in |
---|
180 | let old_program_counter ≝ program_counter s in |
---|
181 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
182 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
183 | let new_special_function_registers_8051 ≝ |
---|
184 | cic:/matita/ng/Vector/set_index.fix(0,3,2) Byte nineteen old_special_function_registers_8051 index b ? in |
---|
185 | let old_p1_latch ≝ p1_latch s in |
---|
186 | let old_p3_latch ≝ p3_latch s in |
---|
187 | mk_Status old_code_memory |
---|
188 | old_low_internal_ram |
---|
189 | old_high_internal_ram |
---|
190 | old_external_ram |
---|
191 | old_program_counter |
---|
192 | new_special_function_registers_8051 |
---|
193 | old_special_function_registers_8052 |
---|
194 | old_p1_latch |
---|
195 | old_p3_latch. |
---|
196 | napply (sfr8051_index_nineteen i). |
---|
197 | nqed. |
---|
198 | |
---|
199 | ndefinition set_8052_sfr ≝ |
---|
200 | λs: Status. |
---|
201 | λi: SFR8052. |
---|
202 | λb: Byte. |
---|
203 | let index ≝ sfr_8052_index i in |
---|
204 | let old_code_memory ≝ code_memory s in |
---|
205 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
206 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
207 | let old_external_ram ≝ external_ram s in |
---|
208 | let old_program_counter ≝ program_counter s in |
---|
209 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
210 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
211 | let new_special_function_registers_8052 ≝ |
---|
212 | cic:/matita/ng/Vector/set_index.fix(0,3,2) Byte five old_special_function_registers_8052 index b ? in |
---|
213 | let old_p1_latch ≝ p1_latch s in |
---|
214 | let old_p3_latch ≝ p3_latch s in |
---|
215 | mk_Status old_code_memory |
---|
216 | old_low_internal_ram |
---|
217 | old_high_internal_ram |
---|
218 | old_external_ram |
---|
219 | old_program_counter |
---|
220 | old_special_function_registers_8051 |
---|
221 | new_special_function_registers_8052 |
---|
222 | old_p1_latch |
---|
223 | old_p3_latch. |
---|
224 | napply (sfr8052_index_five i). |
---|
225 | nqed. |
---|
226 | |
---|
227 | ndefinition set_program_counter ≝ |
---|
228 | λs: Status. |
---|
229 | λw: Word. |
---|
230 | let old_code_memory ≝ code_memory s in |
---|
231 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
232 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
233 | let old_external_ram ≝ external_ram s in |
---|
234 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
235 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
236 | let old_p1_latch ≝ p1_latch s in |
---|
237 | let old_p3_latch ≝ p3_latch s in |
---|
238 | mk_Status old_code_memory |
---|
239 | old_low_internal_ram |
---|
240 | old_high_internal_ram |
---|
241 | old_external_ram |
---|
242 | w |
---|
243 | old_special_function_registers_8051 |
---|
244 | old_special_function_registers_8052 |
---|
245 | old_p1_latch |
---|
246 | old_p3_latch. |
---|
247 | |
---|
248 | ndefinition set_code_memory ≝ |
---|
249 | λs: Status. |
---|
250 | λr: BitVectorTrie Byte sixteen. |
---|
251 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
252 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
253 | let old_external_ram ≝ external_ram s in |
---|
254 | let old_program_counter ≝ program_counter s in |
---|
255 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
256 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
257 | let old_p1_latch ≝ p1_latch s in |
---|
258 | let old_p3_latch ≝ p3_latch s in |
---|
259 | mk_Status r |
---|
260 | old_low_internal_ram |
---|
261 | old_high_internal_ram |
---|
262 | old_external_ram |
---|
263 | old_program_counter |
---|
264 | old_special_function_registers_8051 |
---|
265 | old_special_function_registers_8052 |
---|
266 | old_p1_latch |
---|
267 | old_p3_latch. |
---|
268 | |
---|
269 | ndefinition set_low_internal_ram ≝ |
---|
270 | λs: Status. |
---|
271 | λr: BitVectorTrie Byte seven. |
---|
272 | let old_code_memory ≝ code_memory s in |
---|
273 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
274 | let old_external_ram ≝ external_ram s in |
---|
275 | let old_program_counter ≝ program_counter s in |
---|
276 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
277 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
278 | let old_p1_latch ≝ p1_latch s in |
---|
279 | let old_p3_latch ≝ p3_latch s in |
---|
280 | mk_Status old_code_memory |
---|
281 | r |
---|
282 | old_high_internal_ram |
---|
283 | old_external_ram |
---|
284 | old_program_counter |
---|
285 | old_special_function_registers_8051 |
---|
286 | old_special_function_registers_8052 |
---|
287 | old_p1_latch |
---|
288 | old_p3_latch. |
---|
289 | |
---|
290 | ndefinition set_high_internal_ram ≝ |
---|
291 | λs: Status. |
---|
292 | λr: BitVectorTrie Byte seven. |
---|
293 | let old_code_memory ≝ code_memory s in |
---|
294 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
295 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
296 | let old_external_ram ≝ external_ram s in |
---|
297 | let old_program_counter ≝ program_counter s in |
---|
298 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
299 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
300 | let old_p1_latch ≝ p1_latch s in |
---|
301 | let old_p3_latch ≝ p3_latch s in |
---|
302 | mk_Status old_code_memory |
---|
303 | old_low_internal_ram |
---|
304 | r |
---|
305 | old_external_ram |
---|
306 | old_program_counter |
---|
307 | old_special_function_registers_8051 |
---|
308 | old_special_function_registers_8052 |
---|
309 | old_p1_latch |
---|
310 | old_p3_latch. |
---|
311 | |
---|
312 | ndefinition set_external_ram ≝ |
---|
313 | λs: Status. |
---|
314 | λr: BitVectorTrie Byte sixteen. |
---|
315 | let old_code_memory ≝ code_memory s in |
---|
316 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
317 | let old_high_internal_ram ≝ high_internal_ram s in |
---|
318 | let old_program_counter ≝ program_counter s in |
---|
319 | let old_special_function_registers_8051 ≝ special_function_registers_8051 s in |
---|
320 | let old_special_function_registers_8052 ≝ special_function_registers_8052 s in |
---|
321 | let old_p1_latch ≝ p1_latch s in |
---|
322 | let old_p3_latch ≝ p3_latch s in |
---|
323 | mk_Status old_code_memory |
---|
324 | old_low_internal_ram |
---|
325 | old_high_internal_ram |
---|
326 | r |
---|
327 | old_program_counter |
---|
328 | old_special_function_registers_8051 |
---|
329 | old_special_function_registers_8052 |
---|
330 | old_p1_latch |
---|
331 | old_p3_latch. |
---|
332 | |
---|
333 | naxiom less_than_or_equal_monotone: |
---|
334 | ∀m, n: Nat. |
---|
335 | m ≤ n → S m ≤ S n. |
---|
336 | |
---|
337 | alias id "get_index" = "cic:/matita/ng/Vector/get_index.fix(0,3,2)". |
---|
338 | |
---|
339 | ndefinition get_cy_flag ≝ |
---|
340 | λs: Status. |
---|
341 | let sfr ≝ special_function_registers_8051 s in |
---|
342 | let psw ≝ get_index Byte nineteen sfr (sfr_8051_index SFR_PSW) ? in |
---|
343 | get_index Bool eight psw Z ?. |
---|
344 | nnormalize. |
---|
345 | napply (less_than_or_equal_monotone ? ?). |
---|
346 | napply (less_than_or_equal_zero). |
---|
347 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
348 | napply (less_than_or_equal_zero). |
---|
349 | nqed. |
---|
350 | |
---|
351 | ndefinition get_ac_flag ≝ |
---|
352 | λs: Status. |
---|
353 | let sfr ≝ special_function_registers_8051 s in |
---|
354 | let psw ≝ get_index Byte nineteen sfr (sfr_8051_index SFR_PSW) ? in |
---|
355 | get_index Bool eight psw (S Z) ?. |
---|
356 | nnormalize. |
---|
357 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
358 | napply (less_than_or_equal_zero). |
---|
359 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
360 | napply (less_than_or_equal_zero). |
---|
361 | nqed. |
---|
362 | |
---|
363 | ndefinition get_fo_flag ≝ |
---|
364 | λs: Status. |
---|
365 | let sfr ≝ special_function_registers_8051 s in |
---|
366 | let psw ≝ get_index Byte nineteen sfr (sfr_8051_index SFR_PSW) ? in |
---|
367 | get_index Bool eight psw two ?. |
---|
368 | nnormalize. |
---|
369 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
370 | napply (less_than_or_equal_zero). |
---|
371 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
372 | napply (less_than_or_equal_zero). |
---|
373 | nqed. |
---|
374 | |
---|
375 | ndefinition get_rs1_flag ≝ |
---|
376 | λs: Status. |
---|
377 | let sfr ≝ special_function_registers_8051 s in |
---|
378 | let psw ≝ get_index Byte nineteen sfr (sfr_8051_index SFR_PSW) ? in |
---|
379 | get_index Bool eight psw three ?. |
---|
380 | nnormalize. |
---|
381 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
382 | napply (less_than_or_equal_zero). |
---|
383 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
384 | napply (less_than_or_equal_zero). |
---|
385 | nqed. |
---|
386 | |
---|
387 | ndefinition get_rs0_flag ≝ |
---|
388 | λs: Status. |
---|
389 | let sfr ≝ special_function_registers_8051 s in |
---|
390 | let psw ≝ get_index Byte nineteen sfr (sfr_8051_index SFR_PSW) ? in |
---|
391 | get_index Bool eight psw four ?. |
---|
392 | nnormalize. |
---|
393 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
394 | napply (less_than_or_equal_zero). |
---|
395 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
396 | napply (less_than_or_equal_zero). |
---|
397 | nqed. |
---|
398 | |
---|
399 | ndefinition get_ov_flag ≝ |
---|
400 | λs: Status. |
---|
401 | let sfr ≝ special_function_registers_8051 s in |
---|
402 | let psw ≝ get_index Byte nineteen sfr (sfr_8051_index SFR_PSW) ? in |
---|
403 | get_index Bool eight psw five ?. |
---|
404 | nnormalize. |
---|
405 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
406 | napply (less_than_or_equal_zero). |
---|
407 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
408 | napply (less_than_or_equal_zero). |
---|
409 | nqed. |
---|
410 | |
---|
411 | ndefinition get_ud_flag ≝ |
---|
412 | λs: Status. |
---|
413 | let sfr ≝ special_function_registers_8051 s in |
---|
414 | let psw ≝ get_index Byte nineteen sfr (sfr_8051_index SFR_PSW) ? in |
---|
415 | get_index Bool eight psw six ?. |
---|
416 | nnormalize. |
---|
417 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
418 | napply (less_than_or_equal_zero). |
---|
419 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
420 | napply (less_than_or_equal_zero). |
---|
421 | nqed. |
---|
422 | |
---|
423 | ndefinition get_p_flag ≝ |
---|
424 | λs: Status. |
---|
425 | let sfr ≝ special_function_registers_8051 s in |
---|
426 | let psw ≝ get_index Byte nineteen sfr (sfr_8051_index SFR_PSW) ? in |
---|
427 | get_index Bool eight psw seven ?. |
---|
428 | nnormalize. |
---|
429 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
430 | napply (less_than_or_equal_zero). |
---|
431 | nrepeat (napply (less_than_or_equal_monotone ? ?)). |
---|
432 | napply (less_than_or_equal_zero). |
---|
433 | nqed. |
---|
434 | |
---|
435 | ndefinition set_flags ≝ |
---|
436 | λs: Status. |
---|
437 | λcy: Bit. |
---|
438 | λac: Maybe Bit. |
---|
439 | λov: Bit. |
---|
440 | let 〈 nu, nl 〉 ≝ split … four four (get_8051_sfr s SFR_PSW) in |
---|
441 | let old_cy ≝ get_index … nu Z ? in |
---|
442 | let old_ac ≝ get_index … nu one ? in |
---|
443 | let old_fo ≝ get_index … nu two ? in |
---|
444 | let old_rs1 ≝ get_index … nu three ? in |
---|
445 | let old_rs0 ≝ get_index … nl Z ? in |
---|
446 | let old_ov ≝ get_index … nl one ? in |
---|
447 | let old_ud ≝ get_index … nl two ? in |
---|
448 | let old_p ≝ get_index … nl three ? in |
---|
449 | let new_ac ≝ match ac with [ Nothing ⇒ old_ac | Just j ⇒ j ] in |
---|
450 | let new_psw ≝ [[ old_cy ; new_ac ; old_fo ; old_rs1 ; |
---|
451 | old_rs0 ; old_ov ; old_ud ; old_p ]] in |
---|
452 | set_8051_sfr s SFR_PSW new_psw. |
---|
453 | ##[##1,2,3,4,5,6,7,8: |
---|
454 | nnormalize; |
---|
455 | nrepeat (napply less_than_or_equal_monotone); |
---|
456 | napply (less_than_or_equal_zero); |
---|
457 | ##] |
---|
458 | nqed. |
---|
459 | |
---|
460 | ndefinition initialise_status ≝ |
---|
461 | let status ≝ mk_Status (Stub Byte sixteen) (* Code mem. *) |
---|
462 | (Stub Byte seven) (* Low mem. *) |
---|
463 | (Stub Byte seven) (* High mem. *) |
---|
464 | (Stub Byte sixteen) (* Ext mem. *) |
---|
465 | (zero sixteen) (* PC. *) |
---|
466 | (replicate Byte nineteen (zero eight)) (* 8051 SFR. *) |
---|
467 | (replicate Byte five (zero eight)) (* 8052 SFR. *) |
---|
468 | (zero eight) (* P1 latch. *) |
---|
469 | (zero eight) in (* P3 latch. *) |
---|
470 | set_program_counter status (bitvector_of_nat sixteen seven). |
---|
471 | |
---|
472 | naxiom not_implemented: False. |
---|
473 | |
---|
474 | include "Arithmetic.ma". |
---|
475 | |
---|
476 | ndefinition get_bit_addressable_sfr ≝ |
---|
477 | λs: Status. |
---|
478 | λn: Nat. |
---|
479 | λb: BitVector n. |
---|
480 | λl: Bool. |
---|
481 | let address ≝ nat_of_bitvector … b in |
---|
482 | if (decidable_equality address one_hundred_and_twenty_eight) then |
---|
483 | ? |
---|
484 | else if (decidable_equality address one_hundred_and_forty_four) then |
---|
485 | if l then |
---|
486 | (p1_latch s) |
---|
487 | else |
---|
488 | (get_8051_sfr s SFR_P1) |
---|
489 | else if (decidable_equality address one_hundred_and_sixty) then |
---|
490 | ? |
---|
491 | else if (decidable_equality address one_hundred_and_seventy_six) then |
---|
492 | if l then |
---|
493 | (p3_latch s) |
---|
494 | else |
---|
495 | (get_8051_sfr s SFR_P3) |
---|
496 | else if (decidable_equality address one_hundred_and_fifty_three) then |
---|
497 | get_8051_sfr s SFR_SBUF |
---|
498 | else if (decidable_equality address one_hundred_and_thirty_eight) then |
---|
499 | get_8051_sfr s SFR_TL0 |
---|
500 | else if (decidable_equality address one_hundred_and_thirty_nine) then |
---|
501 | get_8051_sfr s SFR_TL1 |
---|
502 | else if (decidable_equality address one_hundred_and_forty) then |
---|
503 | get_8051_sfr s SFR_TH0 |
---|
504 | else if (decidable_equality address one_hundred_and_forty_one) then |
---|
505 | get_8051_sfr s SFR_TH1 |
---|
506 | else if (decidable_equality address two_hundred) then |
---|
507 | get_8052_sfr s SFR_T2CON |
---|
508 | else if (decidable_equality address two_hundred_and_two) then |
---|
509 | get_8052_sfr s SFR_RCAP2L |
---|
510 | else if (decidable_equality address two_hundred_and_three) then |
---|
511 | get_8052_sfr s SFR_RCAP2H |
---|
512 | else if (decidable_equality address two_hundred_and_four) then |
---|
513 | get_8052_sfr s SFR_TL2 |
---|
514 | else if (decidable_equality address two_hundred_and_five) then |
---|
515 | get_8052_sfr s SFR_TH2 |
---|
516 | else if (decidable_equality address one_hundred_and_thirty_five) then |
---|
517 | get_8051_sfr s SFR_PCON |
---|
518 | else if (decidable_equality address one_hundred_and_thirty_six) then |
---|
519 | get_8051_sfr s SFR_TCON |
---|
520 | else if (decidable_equality address one_hundred_and_thirty_seven) then |
---|
521 | get_8051_sfr s SFR_TMOD |
---|
522 | else if (decidable_equality address one_hundred_and_fifty_two) then |
---|
523 | get_8051_sfr s SFR_SCON |
---|
524 | else if (decidable_equality address one_hundred_and_sixty_eight) then |
---|
525 | get_8051_sfr s SFR_IE |
---|
526 | else if (decidable_equality address one_hundred_and_eighty_four) then |
---|
527 | get_8051_sfr s SFR_IP |
---|
528 | else if (decidable_equality address one_hundred_and_twenty_nine) then |
---|
529 | get_8051_sfr s SFR_SP |
---|
530 | else if (decidable_equality address one_hundred_and_thirty) then |
---|
531 | get_8051_sfr s SFR_DPL |
---|
532 | else if (decidable_equality address one_hundred_and_thirty_one) then |
---|
533 | get_8051_sfr s SFR_DPH |
---|
534 | else if (decidable_equality address two_hundred_and_eight) then |
---|
535 | get_8051_sfr s SFR_PSW |
---|
536 | else if (decidable_equality address two_hundred_and_twenty_four) then |
---|
537 | get_8051_sfr s SFR_ACC_A |
---|
538 | else if (decidable_equality address two_hundred_and_forty) then |
---|
539 | get_8051_sfr s SFR_ACC_B |
---|
540 | else |
---|
541 | ?. |
---|
542 | ncases not_implemented. |
---|
543 | nqed. |
---|
544 | |
---|
545 | ndefinition set_bit_addressable_sfr ≝ |
---|
546 | λs: Status. |
---|
547 | λb: Byte. |
---|
548 | λv: Byte. |
---|
549 | let address ≝ nat_of_bitvector … b in |
---|
550 | if (decidable_equality address one_hundred_and_twenty_eight) then |
---|
551 | ? |
---|
552 | else if (decidable_equality address one_hundred_and_forty_four) then |
---|
553 | let status_1 ≝ set_8051_sfr s SFR_P1 v in |
---|
554 | let status_2 ≝ set_p1_latch s v in |
---|
555 | status_2 |
---|
556 | else if (decidable_equality address one_hundred_and_sixty) then |
---|
557 | ? |
---|
558 | else if (decidable_equality address one_hundred_and_seventy_six) then |
---|
559 | let status_1 ≝ set_8051_sfr s SFR_P3 v in |
---|
560 | let status_2 ≝ set_p3_latch s v in |
---|
561 | status_2 |
---|
562 | else if (decidable_equality address one_hundred_and_fifty_three) then |
---|
563 | set_8051_sfr s SFR_SBUF v |
---|
564 | else if (decidable_equality address one_hundred_and_thirty_eight) then |
---|
565 | set_8051_sfr s SFR_TL0 v |
---|
566 | else if (decidable_equality address one_hundred_and_thirty_nine) then |
---|
567 | set_8051_sfr s SFR_TL1 v |
---|
568 | else if (decidable_equality address one_hundred_and_forty) then |
---|
569 | set_8051_sfr s SFR_TH0 v |
---|
570 | else if (decidable_equality address one_hundred_and_forty_one) then |
---|
571 | set_8051_sfr s SFR_TH1 v |
---|
572 | else if (decidable_equality address two_hundred) then |
---|
573 | set_8052_sfr s SFR_T2CON v |
---|
574 | else if (decidable_equality address two_hundred_and_two) then |
---|
575 | set_8052_sfr s SFR_RCAP2L v |
---|
576 | else if (decidable_equality address two_hundred_and_three) then |
---|
577 | set_8052_sfr s SFR_RCAP2H v |
---|
578 | else if (decidable_equality address two_hundred_and_four) then |
---|
579 | set_8052_sfr s SFR_TL2 v |
---|
580 | else if (decidable_equality address two_hundred_and_five) then |
---|
581 | set_8052_sfr s SFR_TH2 v |
---|
582 | else if (decidable_equality address one_hundred_and_thirty_five) then |
---|
583 | set_8051_sfr s SFR_PCON v |
---|
584 | else if (decidable_equality address one_hundred_and_thirty_six) then |
---|
585 | set_8051_sfr s SFR_TCON v |
---|
586 | else if (decidable_equality address one_hundred_and_thirty_seven) then |
---|
587 | set_8051_sfr s SFR_TMOD v |
---|
588 | else if (decidable_equality address one_hundred_and_fifty_two) then |
---|
589 | set_8051_sfr s SFR_SCON v |
---|
590 | else if (decidable_equality address one_hundred_and_sixty_eight) then |
---|
591 | set_8051_sfr s SFR_IE v |
---|
592 | else if (decidable_equality address one_hundred_and_eighty_four) then |
---|
593 | set_8051_sfr s SFR_IP v |
---|
594 | else if (decidable_equality address one_hundred_and_twenty_nine) then |
---|
595 | set_8051_sfr s SFR_SP v |
---|
596 | else if (decidable_equality address one_hundred_and_thirty) then |
---|
597 | set_8051_sfr s SFR_DPL v |
---|
598 | else if (decidable_equality address one_hundred_and_thirty_one) then |
---|
599 | set_8051_sfr s SFR_DPH v |
---|
600 | else if (decidable_equality address two_hundred_and_eight) then |
---|
601 | set_8051_sfr s SFR_PSW v |
---|
602 | else if (decidable_equality address two_hundred_and_twenty_four) then |
---|
603 | set_8051_sfr s SFR_ACC_A v |
---|
604 | else if (decidable_equality address two_hundred_and_forty) then |
---|
605 | set_8051_sfr s SFR_ACC_B v |
---|
606 | else |
---|
607 | ?. |
---|
608 | ncases not_implemented. |
---|
609 | nqed. |
---|
610 | |
---|
611 | ndefinition bit_address_of_register ≝ |
---|
612 | λs: Status. |
---|
613 | λb, c, d: Bit. |
---|
614 | let 〈 un, ln 〉 ≝ split ? four four (get_8051_sfr s SFR_PSW) in |
---|
615 | let 〈 r1, r0 〉 ≝ mk_Cartesian … (get_index four un two ?) (get_index four un three ?) in |
---|
616 | let offset ≝ |
---|
617 | if conjunction (negation r1) (negation r0) then |
---|
618 | Z |
---|
619 | else if conjunction (negation r1) r0 then |
---|
620 | eight |
---|
621 | else if conjunction r1 r0 then |
---|
622 | twenty_four |
---|
623 | else |
---|
624 | sixteen |
---|
625 | in |
---|
626 | bitvector_of_nat seven (offset + (nat_of_bitvector ? [[ false ; b ; c ; d ]])). |
---|
627 | nnormalize. |
---|
628 | nrepeat (napply less_than_or_equal_monotone). |
---|
629 | napply less_than_or_equal_zero. |
---|
630 | nrepeat (napply less_than_or_equal_monotone). |
---|
631 | napply less_than_or_equal_zero. |
---|
632 | nqed. |
---|
633 | |
---|
634 | ndefinition get_register ≝ |
---|
635 | λs: Status. |
---|
636 | λb, c, d: Bit. |
---|
637 | let address ≝ bit_address_of_register s b c d in |
---|
638 | lookup … address (low_internal_ram s) (zero eight). |
---|
639 | |
---|
640 | ndefinition set_register ≝ |
---|
641 | λs: Status. |
---|
642 | λb, c, d: Bit. |
---|
643 | λv: Byte. |
---|
644 | let address ≝ bit_address_of_register s b c d in |
---|
645 | let old_low_internal_ram ≝ low_internal_ram s in |
---|
646 | let new_low_internal_ram ≝ insert … address v old_low_internal_ram in |
---|
647 | set_low_internal_ram s new_low_internal_ram. |
---|
648 | |
---|
649 | ndefinition read_at_stack_pointer ≝ |
---|
650 | λs: Status. |
---|
651 | let 〈 nu, nl 〉 ≝ split … four four (get_8051_sfr s SFR_SP) in |
---|
652 | let m ≝ get_index … nu Z ? in |
---|
653 | let r1 ≝ get_index … nu one ? in |
---|
654 | let r2 ≝ get_index … nu two ? in |
---|
655 | let r3 ≝ get_index … nu three ? in |
---|
656 | let address ≝ [[ r1 ; r2 ; r3 ]] @@ nl in |
---|
657 | let memory ≝ |
---|
658 | if m then |
---|
659 | (low_internal_ram s) |
---|
660 | else |
---|
661 | (high_internal_ram s) |
---|
662 | in |
---|
663 | lookup … address memory (zero eight). |
---|
664 | ##[##1,2,3,4: |
---|
665 | nnormalize; |
---|
666 | nrepeat (napply less_than_or_equal_monotone); |
---|
667 | napply less_than_or_equal_zero; |
---|
668 | ##] |
---|
669 | nqed. |
---|
670 | |
---|
671 | ndefinition write_at_stack_pointer ≝ |
---|
672 | λs: Status. |
---|
673 | λv: Byte. |
---|
674 | let 〈 nu, nl 〉 ≝ split … four four (get_8051_sfr s SFR_SP) in |
---|
675 | let bit_zero ≝ get_index … nu Z ? in |
---|
676 | let bit_one ≝ get_index … nu one ? in |
---|
677 | let bit_two ≝ get_index … nu two ? in |
---|
678 | let bit_three ≝ get_index … nu three ? in |
---|
679 | if bit_zero then |
---|
680 | let memory ≝ insert … ([[ bit_one ; bit_two ; bit_three ]] @@ nl) |
---|
681 | v (low_internal_ram s) in |
---|
682 | set_low_internal_ram s memory |
---|
683 | else |
---|
684 | let memory ≝ insert … ([[ bit_one ; bit_two ; bit_three ]] @@ nl) |
---|
685 | v (high_internal_ram s) in |
---|
686 | set_high_internal_ram s memory. |
---|
687 | ##[##1,2,3,4: |
---|
688 | nnormalize; |
---|
689 | nrepeat (napply less_than_or_equal_monotone); |
---|
690 | napply less_than_or_equal_zero; |
---|
691 | ##] |
---|
692 | nqed. |
---|
693 | |
---|
694 | ndefinition set_arg_16: Status → Word → [[ dptr ]] → Status ≝ |
---|
695 | λs,v,a. |
---|
696 | match a return λx. bool_to_Prop (is_in ? [[ dptr ]] x) → ? with |
---|
697 | [ DPTR ⇒ λ_:True. |
---|
698 | let 〈 bu, bl 〉 ≝ split … eight eight v in |
---|
699 | let status ≝ set_8051_sfr s SFR_DPH bu in |
---|
700 | let status ≝ set_8051_sfr status SFR_DPL bl in |
---|
701 | status |
---|
702 | | _ ⇒ λK. |
---|
703 | match K in False with |
---|
704 | [ |
---|
705 | ] |
---|
706 | ] (subaddressing_modein … a). |
---|
707 | |
---|
708 | ndefinition get_arg_16: Status → [[ data16 ]] → Word ≝ |
---|
709 | λs, a. |
---|
710 | match a return λx. bool_to_Prop (is_in ? [[ data16 ]] x) → ? with |
---|
711 | [ DATA16 d ⇒ λ_:True. d |
---|
712 | | _ ⇒ λK. |
---|
713 | match K in False with |
---|
714 | [ |
---|
715 | ] |
---|
716 | ] (subaddressing_modein … a). |
---|
717 | |
---|
718 | ndefinition get_arg_8: Status → Bool → [[ direct ; indirect ; register ; |
---|
719 | acc_a ; acc_b ; data ; acc_dptr ; |
---|
720 | acc_pc ; ext_indirect ; |
---|
721 | ext_indirect_dptr ]] → Byte ≝ |
---|
722 | λs, l, a. |
---|
723 | match a return λx. bool_to_Prop (is_in ? [[ direct ; indirect ; register ; |
---|
724 | acc_a ; acc_b ; data ; acc_dptr ; |
---|
725 | acc_pc ; ext_indirect ; |
---|
726 | ext_indirect_dptr ]] x) → ? with |
---|
727 | [ ACC_A ⇒ λacc_a: True. get_8051_sfr s SFR_ACC_A |
---|
728 | | ACC_B ⇒ λacc_b: True. get_8051_sfr s SFR_ACC_B |
---|
729 | | DATA d ⇒ λdata: True. d |
---|
730 | | REGISTER r1 r2 r3 ⇒ λregister: True. get_register s r1 r2 r3 |
---|
731 | | EXT_INDIRECT_DPTR ⇒ |
---|
732 | λext_indirect_dptr: True. |
---|
733 | let address ≝ (get_8051_sfr s SFR_DPH) @@ (get_8051_sfr s SFR_DPL) in |
---|
734 | lookup … sixteen address (external_ram s) (zero eight) |
---|
735 | | EXT_INDIRECT e ⇒ |
---|
736 | λext_indirect: True. |
---|
737 | let address ≝ get_register s false false e in |
---|
738 | let padded_address ≝ pad eight eight address in |
---|
739 | lookup … sixteen padded_address (external_ram s) (zero eight) |
---|
740 | | ACC_DPTR ⇒ |
---|
741 | λacc_dptr: True. |
---|
742 | let dptr ≝ (get_8051_sfr s SFR_DPH) @@ (get_8051_sfr s SFR_DPL) in |
---|
743 | let padded_acc ≝ pad eight eight (get_8051_sfr s SFR_ACC_A) in |
---|
744 | let 〈 carry, address 〉 ≝ half_add sixteen dptr padded_acc in |
---|
745 | lookup … sixteen address (external_ram s) (zero eight) |
---|
746 | | ACC_PC ⇒ |
---|
747 | λacc_pc: True. |
---|
748 | let padded_acc ≝ pad eight eight (get_8051_sfr s SFR_ACC_A) in |
---|
749 | let 〈 carry, address 〉 ≝ half_add sixteen (program_counter s) padded_acc in |
---|
750 | lookup … sixteen address (external_ram s) (zero eight) |
---|
751 | | DIRECT d ⇒ |
---|
752 | λdirect: True. |
---|
753 | let 〈 nu, nl 〉 ≝ split … four four d in |
---|
754 | let bit_one ≝ get_index … nu one ? in |
---|
755 | match bit_one with |
---|
756 | [ true ⇒ |
---|
757 | let 〈 bit_one, three_bits 〉 ≝ split ? one three nu in |
---|
758 | let address ≝ three_bits @@ nl in |
---|
759 | lookup ? seven address (low_internal_ram s) (zero eight) |
---|
760 | | false ⇒ get_bit_addressable_sfr s eight d l |
---|
761 | ] |
---|
762 | | INDIRECT i ⇒ |
---|
763 | λindirect: True. |
---|
764 | let 〈 nu, nl 〉 ≝ split ? four four (get_register s false false i) in |
---|
765 | let 〈 bit_one_v, three_bits 〉 ≝ split ? one three nu in |
---|
766 | let bit_one ≝ get_index … bit_one_v Z ? in |
---|
767 | match bit_one with |
---|
768 | [ true ⇒ |
---|
769 | lookup ? seven (three_bits @@ nl) (low_internal_ram s) (zero eight) |
---|
770 | | false ⇒ |
---|
771 | lookup ? seven (three_bits @@ nl) (high_internal_ram s) (zero eight) |
---|
772 | ] |
---|
773 | | _ ⇒ λother. |
---|
774 | match other in False with [ ] |
---|
775 | ] (subaddressing_modein … a). |
---|
776 | ##[##1,2: |
---|
777 | nnormalize; |
---|
778 | nrepeat (napply less_than_or_equal_monotone); |
---|
779 | napply less_than_or_equal_zero; |
---|
780 | ##] |
---|
781 | nqed. |
---|
782 | |
---|
783 | ndefinition set_arg_8: Status → [[ direct ; indirect ; register ; |
---|
784 | acc_a ; acc_b ; ext_indirect ; |
---|
785 | ext_indirect_dptr ]] → Byte → Status ≝ |
---|
786 | λs, a, v. |
---|
787 | match a return λx. bool_to_Prop (is_in ? [[ direct ; indirect ; register ; |
---|
788 | acc_a ; acc_b ; ext_indirect ; |
---|
789 | ext_indirect_dptr ]] x) → ? with |
---|
790 | [ DIRECT d ⇒ |
---|
791 | λdirect: True. |
---|
792 | let 〈 nu, nl 〉 ≝ split … four four d in |
---|
793 | let bit_one ≝ get_index … nu one ? in |
---|
794 | let 〈 ignore, three_bits 〉 ≝ split ? one three nu in |
---|
795 | match bit_one with |
---|
796 | [ true ⇒ set_bit_addressable_sfr s d v |
---|
797 | | false ⇒ |
---|
798 | let memory ≝ insert ? seven (three_bits @@ nl) v (low_internal_ram s) in |
---|
799 | set_low_internal_ram s memory |
---|
800 | ] |
---|
801 | | INDIRECT i ⇒ |
---|
802 | λindirect: True. |
---|
803 | let register ≝ get_register s false false i in |
---|
804 | let 〈 nu, nl 〉 ≝ split ? four four register in |
---|
805 | let bit_one ≝ get_index ? nu one ? in |
---|
806 | let 〈 ignore, three_bits 〉 ≝ split ? one three nu in |
---|
807 | match bit_one with |
---|
808 | [ true ⇒ |
---|
809 | let memory ≝ insert … (three_bits @@ nl) v (low_internal_ram s) in |
---|
810 | set_low_internal_ram s memory |
---|
811 | | false ⇒ |
---|
812 | let memory ≝ insert … (three_bits @@ nl) v (high_internal_ram s) in |
---|
813 | set_high_internal_ram s memory |
---|
814 | ] |
---|
815 | | REGISTER r1 r2 r3 ⇒ λregister: True. set_register s r1 r2 r3 v |
---|
816 | | ACC_A ⇒ λacc_a: True. set_8051_sfr s SFR_ACC_A v |
---|
817 | | ACC_B ⇒ λacc_b: True. set_8051_sfr s SFR_ACC_B v |
---|
818 | | EXT_INDIRECT e ⇒ |
---|
819 | λext_indirect: True. |
---|
820 | let address ≝ get_register s false false e in |
---|
821 | let padded_address ≝ pad eight eight address in |
---|
822 | let memory ≝ insert ? sixteen padded_address v (external_ram s) in |
---|
823 | set_external_ram s memory |
---|
824 | | EXT_INDIRECT_DPTR ⇒ |
---|
825 | λext_indirect_dptr: True. |
---|
826 | let address ≝ (get_8051_sfr s SFR_DPH) @@ (get_8051_sfr s SFR_DPL) in |
---|
827 | let memory ≝ insert ? sixteen address v (external_ram s) in |
---|
828 | set_external_ram s memory |
---|
829 | | _ ⇒ |
---|
830 | λother: False. |
---|
831 | match other in False with [ ] |
---|
832 | ] (subaddressing_modein … a). |
---|
833 | ##[##1,2: |
---|
834 | nnormalize; |
---|
835 | nrepeat (napply less_than_or_equal_monotone); |
---|
836 | napply less_than_or_equal_zero |
---|
837 | ##] |
---|
838 | nqed. |
---|
839 | |
---|
840 | naxiom modulus_less_than: |
---|
841 | ∀m,n: Nat. |
---|
842 | (m mod n) < n. |
---|
843 | |
---|
844 | ndefinition get_arg_1: Status → [[ bit_addr ; n_bit_addr ; carry ]] → |
---|
845 | Bool → Bool ≝ |
---|
846 | λs, a, l. |
---|
847 | match a return λx. bool_to_Prop (is_in ? [[ bit_addr ; |
---|
848 | n_bit_addr ; |
---|
849 | carry ]] x) → ? with |
---|
850 | [ BIT_ADDR b ⇒ |
---|
851 | λbit_addr: True. |
---|
852 | let 〈 nu, nl 〉 ≝ split … four four b in |
---|
853 | let bit_one ≝ get_index … nu one ? in |
---|
854 | let 〈 bit_one_v, three_bits 〉 ≝ split ? one three nu in |
---|
855 | match bit_one with |
---|
856 | [ true ⇒ |
---|
857 | let address ≝ nat_of_bitvector … (three_bits @@ nl) in |
---|
858 | let d ≝ address ÷ eight in |
---|
859 | let m ≝ address mod eight in |
---|
860 | let trans ≝ bitvector_of_nat eight ((d * eight) + one_hundred_and_twenty_eight) in |
---|
861 | let sfr ≝ get_bit_addressable_sfr s ? trans l in |
---|
862 | get_index ? sfr m ? |
---|
863 | | false ⇒ |
---|
864 | let address ≝ nat_of_bitvector … (three_bits @@ nl) in |
---|
865 | let address' ≝ bitvector_of_nat seven ((address ÷ eight) + thirty_two) in |
---|
866 | let t ≝ lookup … seven address' (low_internal_ram s) (zero eight) in |
---|
867 | get_index ? t (modulus address eight) ? |
---|
868 | ] |
---|
869 | | N_BIT_ADDR n ⇒ |
---|
870 | λn_bit_addr: True. |
---|
871 | let 〈 nu, nl 〉 ≝ split … four four n in |
---|
872 | let bit_one ≝ get_index … nu one ? in |
---|
873 | let 〈 bit_one_v, three_bits 〉 ≝ split ? one three nu in |
---|
874 | match bit_one with |
---|
875 | [ true ⇒ |
---|
876 | let address ≝ nat_of_bitvector … (three_bits @@ nl) in |
---|
877 | let d ≝ address ÷ eight in |
---|
878 | let m ≝ address mod eight in |
---|
879 | let trans ≝ bitvector_of_nat eight ((d * eight) + one_hundred_and_twenty_eight) in |
---|
880 | let sfr ≝ get_bit_addressable_sfr s ? trans l in |
---|
881 | negation (get_index ? sfr m ?) |
---|
882 | | false ⇒ |
---|
883 | let address ≝ nat_of_bitvector … (three_bits @@ nl) in |
---|
884 | let address' ≝ bitvector_of_nat seven ((address ÷ eight) + thirty_two) in |
---|
885 | let trans ≝ lookup … seven address' (low_internal_ram s) (zero eight) in |
---|
886 | negation (get_index ? trans (modulus address eight) ?) |
---|
887 | ] |
---|
888 | | CARRY ⇒ λcarry: True. get_cy_flag s |
---|
889 | | _ ⇒ λother. |
---|
890 | match other in False with [ ] |
---|
891 | ] (subaddressing_modein … a). |
---|
892 | ##[##3,6: |
---|
893 | nnormalize; |
---|
894 | nrepeat (napply less_than_or_equal_monotone); |
---|
895 | napply less_than_or_equal_zero; |
---|
896 | ##|##1,2,4,5: |
---|
897 | napply modulus_less_than; |
---|
898 | ##] |
---|
899 | nqed. |
---|
900 | |
---|
901 | ndefinition set_arg_1: Status → [[ bit_addr ; carry ]] → |
---|
902 | Bit → Status ≝ |
---|
903 | λs, a, v. |
---|
904 | match a return λx. bool_to_Prop (is_in ? [[ bit_addr ; carry ]] x) → ? with |
---|
905 | [ BIT_ADDR b ⇒ λbit_addr: True. |
---|
906 | let 〈 nu, nl 〉 ≝ split ? four four (get_8051_sfr s SFR_PSW) in |
---|
907 | let bit_one ≝ get_index ? nu one ? in |
---|
908 | let 〈 ignore, three_bits 〉 ≝ split ? one three nu in |
---|
909 | match bit_one with |
---|
910 | [ true ⇒ |
---|
911 | let address ≝ nat_of_bitvector … (three_bits @@ nl) in |
---|
912 | let d ≝ address ÷ eight in |
---|
913 | let m ≝ address mod eight in |
---|
914 | let t ≝ bitvector_of_nat eight ((d * eight) + one_hundred_and_twenty_eight) in |
---|
915 | let sfr ≝ get_bit_addressable_sfr s ? t true in |
---|
916 | let new_sfr ≝ set_index … sfr m v ? in |
---|
917 | set_bit_addressable_sfr s new_sfr t |
---|
918 | | false ⇒ |
---|
919 | let address ≝ nat_of_bitvector … (three_bits @@ nl) in |
---|
920 | let address' ≝ bitvector_of_nat seven ((address ÷ eight) + thirty_two) in |
---|
921 | let t ≝ lookup … seven address' (low_internal_ram s) (zero eight) in |
---|
922 | let n_bit ≝ set_index … t (modulus address eight) v ? in |
---|
923 | let memory ≝ insert ? seven address' n_bit (low_internal_ram s) in |
---|
924 | set_low_internal_ram s memory |
---|
925 | ] |
---|
926 | | CARRY ⇒ |
---|
927 | λcarry: True. |
---|
928 | let 〈 nu, nl 〉 ≝ split ? four four (get_8051_sfr s SFR_PSW) in |
---|
929 | let bit_one ≝ get_index … nu one ? in |
---|
930 | let bit_two ≝ get_index … nu two ? in |
---|
931 | let bit_three ≝ get_index … nu three ? in |
---|
932 | let new_psw ≝ [[ v; bit_one ; bit_two; bit_three ]] @@ nl in |
---|
933 | set_8051_sfr s SFR_PSW new_psw |
---|
934 | | _ ⇒ |
---|
935 | λother: False. |
---|
936 | match other in False with |
---|
937 | [ ] |
---|
938 | ] (subaddressing_modein … a). |
---|
939 | ##[##1,2,3,6: |
---|
940 | nnormalize; |
---|
941 | nrepeat (napply less_than_or_equal_monotone); |
---|
942 | napply less_than_or_equal_zero; |
---|
943 | ##|##4,5: |
---|
944 | napply (modulus_less_than address eight); |
---|
945 | ##] |
---|
946 | nqed. |
---|