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 "num/word16.ma".
25 (* *********************************** *)
26 (* STATUS INTERNO DEL PROCESSORE (ALU) *)
27 (* *********************************** *)
29 (* ALU dell'HC08/HCS08 *)
30 nrecord alu_HC08: Type ≝
32 (* A: registo accumulatore *)
33 acc_low_reg_HC08 : byte8;
34 (* X: registro indice parte bassa *)
35 indX_low_reg_HC08 : byte8;
36 (* H: registro indice parte alta *)
37 indX_high_reg_HC08 : byte8;
38 (* SP: registo stack pointer *)
40 (* PC: registro program counter *)
43 (* V: flag overflow *)
45 (* H: flag semi-carry (somma nibble basso) *)
47 (* I: flag mascheramento degli interrupt mascherabili: 1=mascherati *)
49 (* N: flag segno/negativita' *)
56 (* IRQ: flag che simula il pin esterno IRQ *)
60 notation "{hvbox('A_Reg' ≝ acclow ; break 'X_Reg' ≝ indxlow ; break 'H_Reg' ≝ indxhigh ; break 'Sp_Reg' ≝ sp ; break 'Pc_Reg' ≝ pc ; break 'V_Flag' ≝ vfl ; break 'H_Flag' ≝ hfl ; break 'I_Flag' ≝ ifl ; break 'N_Flag' ≝ nfl ; break 'Z_Flag' ≝ zfl ; break 'C_Flag' ≝ cfl ; break 'IRQ_Flag' ≝ irqfl)}"
61 non associative with precedence 80 for
62 @{ 'mk_alu_HC08 $acclow $indxlow $indxhigh $sp $pc $vfl $hfl $ifl $nfl $zfl $cfl $irqfl }.
63 interpretation "mk_alu_HC08" 'mk_alu_HC08 acclow indxlow indxhigh sp pc vfl hfl ifl nfl zfl cfl irqfl =
64 (mk_alu_HC08 acclow indxlow indxhigh sp pc vfl hfl ifl nfl zfl cfl irqfl).
66 (* ***************** *)
67 (* CONFRONTO FRA ALU *)
68 (* ***************** *)
70 (* confronto registro per registro dell'HC08 *)
71 ndefinition eq_HC08_alu ≝
73 (eq_b8 (acc_low_reg_HC08 alu1) (acc_low_reg_HC08 alu2)) ⊗
74 (eq_b8 (indX_low_reg_HC08 alu1) (indX_low_reg_HC08 alu2)) ⊗
75 (eq_b8 (indX_high_reg_HC08 alu1) (indX_high_reg_HC08 alu2)) ⊗
76 (eq_w16 (sp_reg_HC08 alu1) (sp_reg_HC08 alu2)) ⊗
77 (eq_w16 (pc_reg_HC08 alu1) (pc_reg_HC08 alu2)) ⊗
78 (eq_bool (v_flag_HC08 alu1) (v_flag_HC08 alu2)) ⊗
79 (eq_bool (h_flag_HC08 alu1) (h_flag_HC08 alu2)) ⊗
80 (eq_bool (i_flag_HC08 alu1) (i_flag_HC08 alu2)) ⊗
81 (eq_bool (n_flag_HC08 alu1) (n_flag_HC08 alu2)) ⊗
82 (eq_bool (z_flag_HC08 alu1) (z_flag_HC08 alu2)) ⊗
83 (eq_bool (c_flag_HC08 alu1) (c_flag_HC08 alu2)) ⊗
84 (eq_bool (irq_flag_HC08 alu1) (irq_flag_HC08 alu2)).