1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 (* ********************************************************************** *)
16 (* Progetto FreeScale *)
18 (* Sviluppato da: Ing. Cosimo Oliboni, oliboni@cs.unibo.it *)
19 (* Sviluppo: 2008-2010 *)
21 (* ********************************************************************** *)
23 include "emulator/memory/memory_struct.ma".
24 include "num/word16.ma".
25 include "num/word24.ma".
27 (* ******************************** *)
28 (* IP2022 REGISTER SPECIAL HARDWARE *)
29 (* ******************************** *)
31 (* (Top Of Stack) : CALLH/CALL ↑ CALLH/CALL ↓ *)
32 (* Pos2-15 : ... ↑ ... ↓ *)
33 (* Pos16 : 0xFFFF ↑ ... ↓ *)
34 ndefinition aux_callstack_type ≝ Array16T word16.
36 (* Top Of Stack : 0xFFFF on reset *)
37 ndefinition new_callstack ≝
38 mk_Array16T ? (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉)
39 (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉)
40 (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉)
41 (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉) (〈〈xF,xF〉:〈xF,xF〉〉).
43 ndefinition pop_callstack ≝
44 λcs:aux_callstack_type.
46 (mk_Array16T ? (a16_2 ? cs) (a16_3 ? cs) (a16_4 ? cs) (a16_5 ? cs)
47 (a16_6 ? cs) (a16_7 ? cs) (a16_8 ? cs) (a16_9 ? cs)
48 (a16_10 ? cs) (a16_11 ? cs) (a16_12 ? cs) (a16_13 ? cs)
49 (a16_14 ? cs) (a16_15 ? cs) (a16_16 ? cs) 〈〈xF,xF〉:〈xF,xF〉〉).
51 ndefinition push_callstack ≝
52 λcs:aux_callstack_type.λtop.
53 mk_Array16T ? top (a16_1 ? cs) (a16_2 ? cs) (a16_3 ? cs)
54 (a16_4 ? cs) (a16_5 ? cs) (a16_6 ? cs) (a16_7 ? cs)
55 (a16_8 ? cs) (a16_9 ? cs) (a16_10 ? cs) (a16_11 ? cs)
56 (a16_12 ? cs) (a16_13 ? cs) (a16_14 ? cs) (a16_15 ? cs).
58 (* array ad accesso diretto di 8 registri ADDR a 24bit *)
59 (* selezione con registro ADDRSEL, solo i primi 3bit validi *)
60 ndefinition aux_addrarray_type ≝ Array8T word24.
62 (* tutti a 0x000000 on reset *)
63 ndefinition new_addrarray ≝
64 mk_Array8T ? (〈〈x0,x0〉;〈x0,x0〉;〈x0,x0〉〉) (〈〈x0,x0〉;〈x0,x0〉;〈x0,x0〉〉)
65 (〈〈x0,x0〉;〈x0,x0〉;〈x0,x0〉〉) (〈〈x0,x0〉;〈x0,x0〉;〈x0,x0〉〉)
66 (〈〈x0,x0〉;〈x0,x0〉;〈x0,x0〉〉) (〈〈x0,x0〉;〈x0,x0〉;〈x0,x0〉〉)
67 (〈〈x0,x0〉;〈x0,x0〉;〈x0,x0〉〉) (〈〈x0,x0〉;〈x0,x0〉;〈x0,x0〉〉).
69 ndefinition get_addrarray ≝
70 λaddrsel:byte8.λaa:aux_addrarray_type.
71 getn_array8T (oct_of_exL (cnL ? addrsel)) ? aa.
73 ndefinition set_addrarray ≝
74 λaddrsel:byte8.λaa:aux_addrarray_type.λv.
75 setn_array8T (oct_of_exL (cnL ? addrsel)) ? aa v.
77 (* *********************************** *)
78 (* STATUS INTERNO DEL PROCESSORE (ALU) *)
79 (* *********************************** *)
82 nrecord alu_IP2022: Type ≝
85 acc_low_reg_IP2022 : byte8;
86 (* MULH: parte alta moltiplicazione *)
87 mulh_reg_IP2022 : byte8;
89 (* ADDRSEL: selettore di indirizzo *)
90 addrsel_reg_IP2022 : byte8;
91 (* ADDR [ADDRX|ADDRH|ADDRL] : array indirizzi indicizzati da ADDRSEL *)
92 addr_array_IP2022 : aux_addrarray_type;
94 (* CALL [CALLH|CALLL] : stack indirizzi di ritorno *)
95 call_stack_IP2022 : aux_callstack_type;
97 (* IP [IPH|IPL] : indirect pointer *)
98 ip_reg_IP2022 : word16;
99 (* DP [DPH|DPL] : data pointer *)
100 dp_reg_IP2022 : word16;
101 (* DATA [DATAH|DATAL] : data value *)
102 data_reg_IP2022 : word16;
103 (* SP [SPH|SPL] : stack pointer *)
104 sp_reg_IP2022 : word16;
105 (* PC [PCH|PCL] : program counter *)
106 pc_reg_IP2022 : word16;
108 (* SPEED[xxxxSSSS] : divisore del clock *)
109 speed_reg_IP2022 : exadecim;
110 (* PAGE [PPPxxxxx] : selettore pagina *)
111 page_reg_IP2022 : oct;
113 (* H: flag semi-carry (somma nibble basso) *)
114 h_flag_IP2022 : bool;
116 z_flag_IP2022 : bool;
118 c_flag_IP2022 : bool;
120 (* skip mode : effettua fetch-decode, no execute *)
121 skip_mode_IP2022 : bool
124 notation "{hvbox('W_Reg' ≝ w ; break 'MulH_Reg' ≝ mulh ; break 'Addrsel_Reg' ≝ addrsel ; break 'Addr_Array' ≝ addr ; break 'Call_Stack' ≝ call ; break 'Ip_Reg' ≝ ip ; break 'Dp_Reg' ≝ dp ; break 'Data_Reg' ≝ data ; break 'Sp_Reg' ≝ sp ; break 'Pc_Reg' ≝ pc ; break 'Speed_Reg' ≝ speed ; break 'Page_Reg' ≝ page ; break 'H_Flag' ≝ hfl ; break 'Z_Flag' ≝ zfl ; break 'C_Flag' ≝ cfl ; break 'Skip_Mode' ≝ skipmode)}"
125 non associative with precedence 80 for
126 @{ 'mk_alu_IP2022 $w $mulh $addrsel $addr $call $ip $dp $data $sp $pc $speed $page $hfl $zfl $cfl $skipmode }.
127 interpretation "mk_alu_IP2022" 'mk_alu_IP2022 w mulh addrsel addr call ip dp data sp pc speed page hfl zfl cfl skipmode =
128 (mk_alu_IP2022 w mulh addrsel addr call ip dp data sp pc speed page hfl zfl cfl skipmode).
134 (* setter specifico IP2022 di A *)
135 ndefinition set_acc_8_low_reg_IP2022 ≝
139 (mulh_reg_IP2022 alu)
140 (addrsel_reg_IP2022 alu)
141 (addr_array_IP2022 alu)
142 (call_stack_IP2022 alu)
145 (data_reg_IP2022 alu)
148 (speed_reg_IP2022 alu)
149 (page_reg_IP2022 alu)
153 (skip_mode_IP2022 alu).
155 (* setter specifico IP2022 di MULH *)
156 ndefinition set_mulh_reg_IP2022 ≝
159 (acc_low_reg_IP2022 alu)
161 (addrsel_reg_IP2022 alu)
162 (addr_array_IP2022 alu)
163 (call_stack_IP2022 alu)
166 (data_reg_IP2022 alu)
169 (speed_reg_IP2022 alu)
170 (page_reg_IP2022 alu)
174 (skip_mode_IP2022 alu).
176 (* setter specifico IP2022 di ADDRSEL *)
177 ndefinition set_addrsel_reg_IP2022 ≝
178 λalu.λaddrsel':byte8.
180 (acc_low_reg_IP2022 alu)
181 (mulh_reg_IP2022 alu)
183 (addr_array_IP2022 alu)
184 (call_stack_IP2022 alu)
187 (data_reg_IP2022 alu)
190 (speed_reg_IP2022 alu)
191 (page_reg_IP2022 alu)
195 (skip_mode_IP2022 alu).
197 (* setter specifico IP2022 di ADDR *)
198 ndefinition set_addr_reg_IP2022 ≝
201 (acc_low_reg_IP2022 alu)
202 (mulh_reg_IP2022 alu)
203 (addrsel_reg_IP2022 alu)
204 (set_addrarray (addrsel_reg_IP2022 alu) (addr_array_IP2022 alu) addr')
205 (call_stack_IP2022 alu)
208 (data_reg_IP2022 alu)
211 (speed_reg_IP2022 alu)
212 (page_reg_IP2022 alu)
216 (skip_mode_IP2022 alu).
218 (* setter specifico IP2022 di CALL *)
219 ndefinition set_call_reg_IP2022 ≝
222 (acc_low_reg_IP2022 alu)
223 (mulh_reg_IP2022 alu)
224 (addrsel_reg_IP2022 alu)
225 (addr_array_IP2022 alu)
226 (setn_array16T x0 ? (call_stack_IP2022 alu) call')
229 (data_reg_IP2022 alu)
232 (speed_reg_IP2022 alu)
233 (page_reg_IP2022 alu)
237 (skip_mode_IP2022 alu).
239 ndefinition push_call_reg_IP2022 ≝
242 (acc_low_reg_IP2022 alu)
243 (mulh_reg_IP2022 alu)
244 (addrsel_reg_IP2022 alu)
245 (addr_array_IP2022 alu)
246 (push_callstack (call_stack_IP2022 alu) call')
249 (data_reg_IP2022 alu)
252 (speed_reg_IP2022 alu)
253 (page_reg_IP2022 alu)
257 (skip_mode_IP2022 alu).
259 ndefinition pop_call_reg_IP2022 ≝
261 match pop_callstack (call_stack_IP2022 alu) with
265 (acc_low_reg_IP2022 alu)
266 (mulh_reg_IP2022 alu)
267 (addrsel_reg_IP2022 alu)
268 (addr_array_IP2022 alu)
272 (data_reg_IP2022 alu)
275 (speed_reg_IP2022 alu)
276 (page_reg_IP2022 alu)
280 (skip_mode_IP2022 alu)) ].
282 (* setter specifico IP2022 di IP *)
283 ndefinition set_ip_reg_IP2022 ≝
286 (acc_low_reg_IP2022 alu)
287 (mulh_reg_IP2022 alu)
288 (addrsel_reg_IP2022 alu)
289 (addr_array_IP2022 alu)
290 (call_stack_IP2022 alu)
293 (data_reg_IP2022 alu)
296 (speed_reg_IP2022 alu)
297 (page_reg_IP2022 alu)
301 (skip_mode_IP2022 alu).
303 (* setter specifico IP2022 di DP *)
304 ndefinition set_dp_reg_IP2022 ≝
307 (acc_low_reg_IP2022 alu)
308 (mulh_reg_IP2022 alu)
309 (addrsel_reg_IP2022 alu)
310 (addr_array_IP2022 alu)
311 (call_stack_IP2022 alu)
314 (data_reg_IP2022 alu)
317 (speed_reg_IP2022 alu)
318 (page_reg_IP2022 alu)
322 (skip_mode_IP2022 alu).
324 (* setter specifico IP2022 di DATA *)
325 ndefinition set_data_reg_IP2022 ≝
328 (acc_low_reg_IP2022 alu)
329 (mulh_reg_IP2022 alu)
330 (addrsel_reg_IP2022 alu)
331 (addr_array_IP2022 alu)
332 (call_stack_IP2022 alu)
338 (speed_reg_IP2022 alu)
339 (page_reg_IP2022 alu)
343 (skip_mode_IP2022 alu).
345 (* setter specifico IP2022 di SP *)
346 ndefinition set_sp_reg_IP2022 ≝
349 (acc_low_reg_IP2022 alu)
350 (mulh_reg_IP2022 alu)
351 (addrsel_reg_IP2022 alu)
352 (addr_array_IP2022 alu)
353 (call_stack_IP2022 alu)
356 (data_reg_IP2022 alu)
359 (speed_reg_IP2022 alu)
360 (page_reg_IP2022 alu)
364 (skip_mode_IP2022 alu).
366 (* setter specifico IP2022 di PC *)
367 ndefinition set_pc_reg_IP2022 ≝
370 (acc_low_reg_IP2022 alu)
371 (mulh_reg_IP2022 alu)
372 (addrsel_reg_IP2022 alu)
373 (addr_array_IP2022 alu)
374 (call_stack_IP2022 alu)
377 (data_reg_IP2022 alu)
380 (speed_reg_IP2022 alu)
381 (page_reg_IP2022 alu)
385 (skip_mode_IP2022 alu).
387 (* setter specifico IP2022 di SPEED *)
388 ndefinition set_speed_reg_IP2022 ≝
389 λalu.λspeed':exadecim.
391 (acc_low_reg_IP2022 alu)
392 (mulh_reg_IP2022 alu)
393 (addrsel_reg_IP2022 alu)
394 (addr_array_IP2022 alu)
395 (call_stack_IP2022 alu)
398 (data_reg_IP2022 alu)
402 (page_reg_IP2022 alu)
406 (skip_mode_IP2022 alu).
408 (* setter specifico IP2022 di PAGE *)
409 ndefinition set_page_reg_IP2022 ≝
412 (acc_low_reg_IP2022 alu)
413 (mulh_reg_IP2022 alu)
414 (addrsel_reg_IP2022 alu)
415 (addr_array_IP2022 alu)
416 (call_stack_IP2022 alu)
419 (data_reg_IP2022 alu)
422 (speed_reg_IP2022 alu)
427 (skip_mode_IP2022 alu).
429 (* setter specifico IP2022 di H *)
430 ndefinition set_h_flag_IP2022 ≝
433 (acc_low_reg_IP2022 alu)
434 (mulh_reg_IP2022 alu)
435 (addrsel_reg_IP2022 alu)
436 (addr_array_IP2022 alu)
437 (call_stack_IP2022 alu)
440 (data_reg_IP2022 alu)
443 (speed_reg_IP2022 alu)
444 (page_reg_IP2022 alu)
448 (skip_mode_IP2022 alu).
450 (* setter specifico IP2022 di Z *)
451 ndefinition set_z_flag_IP2022 ≝
454 (acc_low_reg_IP2022 alu)
455 (mulh_reg_IP2022 alu)
456 (addrsel_reg_IP2022 alu)
457 (addr_array_IP2022 alu)
458 (call_stack_IP2022 alu)
461 (data_reg_IP2022 alu)
464 (speed_reg_IP2022 alu)
465 (page_reg_IP2022 alu)
469 (skip_mode_IP2022 alu).
471 (* setter specifico IP2022 di C *)
472 ndefinition set_c_flag_IP2022 ≝
475 (acc_low_reg_IP2022 alu)
476 (mulh_reg_IP2022 alu)
477 (addrsel_reg_IP2022 alu)
478 (addr_array_IP2022 alu)
479 (call_stack_IP2022 alu)
482 (data_reg_IP2022 alu)
485 (speed_reg_IP2022 alu)
486 (page_reg_IP2022 alu)
490 (skip_mode_IP2022 alu).
492 (* setter specifico IP2022 di SKIP *)
493 ndefinition set_skip_mode_IP2022 ≝
494 λalu.λskipmode':bool.
496 (acc_low_reg_IP2022 alu)
497 (mulh_reg_IP2022 alu)
498 (addrsel_reg_IP2022 alu)
499 (addr_array_IP2022 alu)
500 (call_stack_IP2022 alu)
503 (data_reg_IP2022 alu)
506 (speed_reg_IP2022 alu)
507 (page_reg_IP2022 alu)
513 (* ***************** *)
514 (* CONFRONTO FRA ALU *)
515 (* ***************** *)
517 (* confronto registro per registro dell'IP2022 *)
518 ndefinition eq_IP2022_alu ≝
519 λalu1,alu2:alu_IP2022.
520 (eq_b8 (acc_low_reg_IP2022 alu1) (acc_low_reg_IP2022 alu2)) ⊗
521 (eq_b8 (mulh_reg_IP2022 alu1) (mulh_reg_IP2022 alu2)) ⊗
522 (eq_b8 (addrsel_reg_IP2022 alu1) (addrsel_reg_IP2022 alu2)) ⊗
523 (eq_ar8 ? eq_w24 (addr_array_IP2022 alu1) (addr_array_IP2022 alu2)) ⊗
524 (eq_ar16 ? eq_w16 (call_stack_IP2022 alu1) (call_stack_IP2022 alu2)) ⊗
525 (eq_w16 (ip_reg_IP2022 alu1) (ip_reg_IP2022 alu2)) ⊗
526 (eq_w16 (dp_reg_IP2022 alu1) (dp_reg_IP2022 alu2)) ⊗
527 (eq_w16 (data_reg_IP2022 alu1) (data_reg_IP2022 alu2)) ⊗
528 (eq_w16 (sp_reg_IP2022 alu1) (sp_reg_IP2022 alu2)) ⊗
529 (eq_w16 (pc_reg_IP2022 alu1) (pc_reg_IP2022 alu2)) ⊗
530 (eq_ex (speed_reg_IP2022 alu1) (speed_reg_IP2022 alu2)) ⊗
531 (eq_oct (page_reg_IP2022 alu1) (page_reg_IP2022 alu2)) ⊗
532 (eq_bool (h_flag_IP2022 alu1) (h_flag_IP2022 alu2)) ⊗
533 (eq_bool (z_flag_IP2022 alu1) (z_flag_IP2022 alu2)) ⊗
534 (eq_bool (c_flag_IP2022 alu1) (c_flag_IP2022 alu2)) ⊗
535 (eq_bool (skip_mode_IP2022 alu1) (skip_mode_IP2022 alu2)).